I am thinking that, because pin 30 also leads off into the warmup regulator area, I should check around there. Ended up being the module above the spare tire not being sealed correctly from gm. what controls it the pcm?jumped power from the fuse box back no problems. I have a 1996 Tahoe with 4wd, 4-door. I am converting a 78 GMC K15 with gen 1 sbc/th350 to TBI from a 1991 Chevy 1500 donor truck. of payload capacity. In some cases, the car is liable to stop entirely, leading to disastrous results. Remove the 2 bolts that hold the black cover and its under there. Help diagnosing 87 TBI fuel pump problem 73-87 Chevy _ GMC Trucks » Fuel Systems and This will bypass the relay and feed power directly to the fuel pump. Fuses and relay Chevrolet Suburban 2007-2014. 4L LD9 PCM Fuel Pump Relay Wiring Diagram Schematic. I just replaced the fuel pump and fuel filter. 2009 chevy 1500 5. Gates application engineers and automotive experts have spent decades developing the most comprehensive automotive power transmission and fluid power selection in the aftermarket, with OE fit parts for your belt drive, engine cooling, fuel, emission control systems, and more. If this is your first visit, be sure to check out the FAQ by clicking the link above. When the ignition sw is switched to the ON position, it turns the EEC Power Relay on. With Mopar, you'll get the right part for your Chrysler, Dodge, Jeep, Ram or FIAT vehicle. This is how you perform a fuel pump replacement by dropping the tank. Diesel Fuel Pump, DERM ECM (Air Bag), PCM. Get targeted search results for your check engine light. Its the ford 460 muti port EFI engine. The fuel pump fuse on your 1996 Chevrolet C1500 truck protects the fuel pump relay and the fuel pump motor from electrical overloads. You must run the correct wire size to it. Fuse Panel Layout Diagram Parts: emissions, mirror, heated seat, A/C clutch, AFTR cool, run park relay, powertrain relay, injectors, crank, cooling fan, high beam relay, horn relay, fog lamp, wiper/washer, trunk/outlet, cigar lighter, ABS system, fuel pump, rear defogger, back up lamp, ACM/ECM relay,. i replaced fuel pump on my 98 chevy silverado 5. In a nutshell: We'll manually apply battery power and ground to terminals 85 and 86 of the fuel pump relay with 2 seperate jumper wires. Get the best deals on Car & Truck Fuel Pumps for Chevrolet when you shop the largest online selection If the pump breaks, the fuel won't be able to power the. Fuel Pump and Sender Assembly. no service soon light,,i have also changed the fuel filter,,when i had the old one out i cranked it, but no spray came out just a gravity amount maybe,,i also checked the power to the fuel pump ,,no power in lines,,i had the truck serviced the day before for a trip ,,i ran a couple errands in the am and loaded up and left ,got about 3 miles and it just died ,,it wants to run and will just. This thread helped me get my 1993 Bronco, 5. Others vary the fuel pump's power supply to control its output and therefore pressure, usually with feedback from a fuel-rail pressure sensor. Engine compartment, fuel pump, stamped (7866). After cranking, power was restored to the coil through a resistor, lowering voltage to 6 volts. the '95 chevy truck is used to pull a horse trailer. Fuel Pump Wiring Diagram. I saw a pic online of a '93 with 5. 1996 Cadillac Eldorado ETC, No power to Fuel Pump - Filter, Fuse, Connections & Relay all good, what can it be? Hi, I have a 1996 Cadillac Eldorado ETC with 180K miles. Any ideas would be great!. having somewhat of the same issue,running bad has no power in DRIVE. Specifically engineered for Top Fuel dragsters and Funny Cars, the all new Dayco Racing blower belt is engineered with carbon and designed specifically for supercharged nitromethane engines. I hear or see no action from the pump. 57,192 2015 Chevrolet Silverado 2500/3500 HD and 2015 GMC Sierra 2500/3500 GMC Sierra HD pickups to inspect for proper attachment of power steering hose clamps to the power steering pump. This item: 1955-1957 Chevy Power Steering Pump 1955-1957 Chevy Power Steering Box 500 Chevy Power Steering Pump Mounting Bracket, Small Block, 1955-1957 Chevy Power Steering O-Ring Return Hose, 605, Delphi & CCI Rack & Pinion, Small Or Big Block, 1955-1957 Chevy Harmonic Balancer Pulley, Single Groove, 1955-1957. A leaking or worn out power steering pump shouldn't keep you from enjoying your classic Chevy truck. 3200, 4100, 4200, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, MXT, RXT Models Built Oct. "Due to the UAW GM Strike, there is a delay receiving parts for all GM dealers across the United States. Best selection of die-cast models and display cases. Transmission. The fuel pump fuse on your 1996 Chevrolet C1500 truck protects the fuel pump relay and the fuel pump motor from electrical overloads. The C/K was Chevrolet's full-size pickup truck line from November 1959 until 2002 in the United States, from 1964 to 2001 in Brazil, and from 1975 to 1982 in Chile. so would that make it do this? And can I only get a new one at a dealership? Any one have a pic of fuse box in tahoe I would love to make sure nothing else is missing. When I pour gas into the TBI the truck will start but I do not see any fuel spraying into the TBI. GM OBD-1 Diagnostic Trouble Codes. See and discover other items: fuel pump modules, fuel relay, fuel transfer pump, gas pump, 2003 chevy, 2000 gmc parts There's a problem loading this menu right now. PROBLEM: Fuel gauge quit working light came on and stayed on empty and transfer pump of course did not work. 57,192 2015 Chevrolet Silverado 2500/3500 HD and 2015 GMC Sierra 2500/3500 GMC Sierra HD pickups to inspect for proper attachment of power steering hose clamps to the power steering pump. Safari trek 454 gas no fuel pump sound: Justin: 2-28-11 : I have a 1996 safari trek,MH with the gas 454, The fuel pump does not come on, it has been sitting for 2 years with fuel stabilizer in the fuel, Is their a relay for the pump or will I need to drop the tank and replace the fuel pump?. When there is no power, the switch inside the relay opens up, not permitting power to reach the fuel pump. When the internal diaphragm leaks, fuel escapes through the weep hole to notify the vehicle owner of a malfunction. I upgraded the fuel system (tank/pump/sending unit) with new aftermarket 1987 V10 parts. I plugged a brand new fuel pump on and it wouldn't turn on at all. FAN 1 Relay - Engine Cooling Fan - Left. The fuel pump relay's circuitry opens and sends roughly 12 volts of power to the fuel pump. I have a 99 Silverado 5. The dme main relay sends power from the middle prong for the pump relay on the fuel pump relay with key on evrrysingle pin gets power except pin 85 to thr fuel pump I hav no idea why!!!! Pin 85 is GROUND from the DME itself. com! Where to buy diecast cars, tanks and planes. From now on whenever you start the car, pause in the run position before cranking it over. We have the power steering pump mounting brackets and power steering hoses you need, too. We know that’s grossly oversimplified, but it’s true. We had it towed to a mechanic who also thought it was the fuel pump. (1988-94) Fuel Pump Relay. 0 engine, fuel injected 4x4 pickup that will not start. To see all images inside 1992 Chevy Truck Fuel Pump Relay Location pictures gallery make sure you abide by that link. Turn the key to on and there was no sign of the fuel pump running. Ground at tank has been checked and ruled out. I hear or see no action from the pump. Using my power probe and a test light , i gave power to the pin that sends voltage to the fuse , and power went to the fuse , but no fuel pump operation. Checked relay, it is good. My problem is when I try to start truck gas from fuel injectors will not click and pass the gas into carburator. com, the message boards for 1947-1998 Chevy & GMC trucks, has a section for 67-72 models only. Check ignition power feed to ecm for intermittent or direct open. The tester’s gauge reads 0-100 PSI, 0 to 7 bar. I I just put in a new pump, strainer, and fuel filter. Only a yellow 20 amp fuse for the pump. The C/K was Chevrolet's full-size pickup truck line from November 1959 until 2002 in the United States, from 1964 to 2001 in Brazil, and from 1975 to 1982 in Chile. Street Carbureted Applications Compatible with all fuels and fuel additives. Therefore, the problem lies in the fuel pump / DME relay, the DME computer, or loss of the signals to the DME computer which cause the fuel pump to start or remaining running after it starts. Shop our large selection of parts based on brand, price, description, and location. PLEASE READ!!! The majority of our truck listings are derived from the sales data of the carburetor manufacturers. The signal is only present for two seconds at key on. Im not sure if the tahoes are different but on my blazer there is a relay in the front fuse box labled fuel pump. It is planned to keep these sites active for two years. We weren't getting fuel pressure initially, and we thought that may have been the issue at first. Fuel Pump Relay Control Circuit Open: P1249: Low Fuel Pressure Sensor Circuit High Voltage: P1250: Fuel Pump Relay Control Circuit Shorted To Ground: P1253: VTEC system - malfunction: Wiring, VTEC solenoid, ECM: P1258: Engine coolant – excessive temperature: Wiring, engine coolant blower motor, mechanical fault, ECM: P1259: VTEC system. The PCM controls the fuel pump relay. If the pumps bad it will start up about 90% of the time. I had two bent valves. Fuse Box Diagrams and Relays - 2001 Chevy Venture There was a post in the automotive forums recently asking about what fuses are used for different circuits. NHTSA reviews 4. Our codes information will help you save money on unnecessary engine, transmission and abs codes repairs. The fuel pump fuse on your 1996 Chevrolet C1500 truck protects the fuel pump relay and the fuel pump motor from electrical overloads. Relay 3 Relay Horn Relay. It was good. 18 FUEL PUMP Fuse 25A Fuel Pump and Sender Assembly – Front, Fuel Pump 19 ITBC Fuse 15A Integrated Trailer Brake Control Module (JL1) 20 HDLP WASH Fuse 20A Not Used 21 REAR WASH Fuse 15A Not Used 22 TRLR PRK Fuse 15A Trailer Wiring 23 LT PRK Fuse 15A License Lamp – Left, Marker Lamp – LF (Z88), Park/Turn Signal Lamp – LF Upper, Park. I've also checked the fuel pump relay which seems to be working aswell. If the relay has a 5th terminal, it is not used. 89 chevy truck 1500 silverado no power to fuel pump on? I have a 89 chevy truck with no power to fuel pump not even the two second start up. Does anyone have any other ideas on making the fuel flow to get the truck to start. Fuse Panel Layout Diagram Parts: emissions, mirror, heated seat, A/C clutch, AFTR cool, run park relay, powertrain relay, injectors, crank, cooling fan, high beam relay, horn relay, fog lamp, wiper/washer, trunk/outlet, cigar lighter, ABS system, fuel pump, rear defogger, back up lamp, ACM/ECM relay,. Classic Performance Products have become recognized leaders in the classic truck segments of customizing and restoration, with innovations catering to a variety of applications, all determined by the consumer's desires. Others vary the fuel pump's power supply to control its output and therefore pressure, usually with feedback from a fuel-rail pressure sensor. If you there is no power to the fuel pump or the relay, then there may be a possible electrical issue with the vehicle. I guess I am back to the auto parts store to get the oil sending unit that supposedly the power supply for the fuel pump goes through. Or at least if i have found it i have no way of knowing which relay it is as none of them are labeled. Shop online with LMCTruck. 3 vortec turns over fine but won't start. Also, check the fuel pump inertia switch. If the fuel supply pressure is zero, remove the fuel supply pump relay and jump #30 & #80 connector, this will send power to the supply pump with the ignition on. Fuel injection generally increases engine fuel efficiency. Environmental benefits. i can only imagine what could happen when you have a trailer behind this truck when the lift pump starts going out and you try to steer without power steering or power brakes, because the. We replaced the fuel pump, no change - but we're getting adequate fuel pressure now. 0 engine, vortech. 7 List of what I have done so far: Used a jumper from battery to pump and verified pump runs Confirmed a ground at pump Performed continuity test on power wire to the fuel pump from fuse block all good Paperclip jumper where fuel pump relay is on fuse block and truck runs like new. So, my truck started off just cranking and cranking, but no start, tried to listen for the fuel pump to prime on start, but there was no "whurr". Put key to run the fuel pump does not turn on. Notes: Some vehicles come with several engine size options and could be very confusing. Bad fuel pump (Pump should run for a few seconds when ignition key is turned to start, no buzz means no fuel delivery to the engine). SO, is there a relay that I can swap out for an easy start to the troubleshooting process? If I had a relay known as "good," then I should be able to rule that out? **SWAPPED WITH AC RELAY - NO CHANGE - RELAY IS NOT THE ISSUE** Also, could that little intermittent shudder been a sign that portended the doom of my fuel pump?. I can crank the engine over but the car won’t start. Return home; Go back to the previous page. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. Fuel tank 5. 2) If all of that checks out, then you need to check if the PCM is providing a ground for the control side of the Fuel Pump Relay. Test for source voltage, to determine whether or not the good charge that's leaving the fuse is getting to the pump. When the PCM needs to turn on the fuel pump, it energizes the fuel pump relay. I am converting a 78 GMC K15 with gen 1 sbc/th350 to TBI from a 1991 Chevy 1500 donor truck. We know that’s grossly oversimplified, but it’s true. Help diagnosing 87 TBI fuel pump problem 73-87 Chevy _ GMC Trucks » Fuel Systems and This will bypass the relay and feed power directly to the fuel pump. of payload capacity. I am having similar problems with my 89 Chevy 454. Put key to run the fuel pump does not turn on. 3 vortec turns over fine but won't start. CAR WON'T START. Power to the relay is routed through the oil pressure switch to kill the pump if the engine is not running (a safety measure to cut off the fuel in an accident). changed fuel pump relay, fuse, oil pressure sensor, cleared ecm. there is no power on the other two wires. The (master) tech there said there was no power to the fuel pump relay, and when he jumped power from the battery to the fuel pump relay it started and ran fine. There is battery power to the relay. 2 or, Pump Runs w/Ignition Switch Off; The ign switch actuator and or switch needs to be adjusted. put in new fuel pump. The 2002 Chevrolet Silverado has 1 problems reported for no power to fuel pump relay. No 12 volts on coil of relay. But most Detroit automakers are ridding their lineups of sedans and. In the engine the alterations were designed to boost power by 10bhp, to a peak of 93bhp at 8,000 rpm. We have combined two great web sites – Rick's First Generation and Eckler’s Camaro to put all your Camaro parts in one convenient, easy to use site. My friend has a 07. The PCM controls the fuel pump relay by applying B+ to the control circuit via an internal switch called a driver. This 1997 Oldsmobile Bravada came in as a no start. Notes On Testing Fuel System Circuit To Check Wiring, Find Bad Wiring Or Shorts, Bad Fuel Pump Relay, And PCM Signals On 1998 Chevy Cavalier Z24 2. IP IGN Fuse. If the fuel pump relay should fail the vehicle will still start once enough oil pressure is created to close the contacts. fuel pump relay i just bought a 1990 suzuki caRRY and it ran fine for 2 days then the fuel pump stopped working sometimes. A/C CMPRSR Relay - A/C CMPRSR Fuse. Shop Xtreme Diesel Performance – XDP for the largest selection of Performance Parts and accessories for your Diesel Powered Dodge Cummins, Ford Powerstroke, GM Duramax and Volkswagen TDI. Voltage at the fuel pump connector with F and B+ jumpered should be at/near battery voltage (normally 12. The plunger then makes contact, which allows more power to flow from the battery to your car starter. It is responsible for controlling power to the fuel pump. Shop online with LMCTruck. Make sure there are no broken circuits anywhere between the fuel pump and relay. 4L LD9 PCM Fuel Pump Relay Wiring Diagram Schematic. No start, then take a chance on the. Included With Fuse And Relay Box. if they are the same then you can swap them out. When I pour gas into the TBI the truck will start but I do not see any fuel spraying into the TBI. FAN 2 Relay - Engine Cooling Fan - Right. 1996 - 2002 GM 6. If the fuel pump doesn’t turn on this doesn’t immediately point to the fuel pump. i'll make a long story short. "variable duty signal cycle to the fuel pump" which makes sense to me for fuel efficiency. Once energized, a magnetic force pulls the switch downward and makes a connection. TEST 4: Bench Testing The Fuel Pump Relay Bench testing the fuel pump relay is pretty easy and in this test section I'll explain the test. Search our site with the power of google or search the web for targeted leads! Our Disclaimer For Check Engine Light Help Please review our disclaimer, and then get ready for the most extensive help available for check engine light repairs! Request Help With Your Check Engine Light Concern. About 86% of these are. Contributed By: Enginebasics. This is where our Jackass Award story begins. Ended up being the module above the spare tire not being sealed correctly from gm. If no power is going to the pump, check the fuel pump relay. So I checked my truck and sure enough, the wiring harnesses are there and all I needed to do is replace the loop-back plug with the DRL Relay Block and install the DRL Resistor into it's location. car and driver save 79% subscribe give a gift visit the website customer service. I made the jumper wire seen above so I could have my fuel pump continuosly run as I checked and adjusted my fuel pressure. is there any thing else that would not a … read more. I saw a pic online of a '93 with 5. Toyota Genuine Parts are made to the same high-quality standards as your Toyota and designed specifically for your model. For the last few months I noticed that if I hopped in and tried to start it immediately it would crank for aces seconds 5-10 before it started. A mechanic buddy of mine narrowed it down to the fuel pump not getting power. The signal is only present for two seconds at key on. From now on whenever you start the car, pause in the run position before cranking it over. It is a 5"×5" flat box about 1/2 in. At work the other day, my truck puttered out on me. First is its bottom-fed fill design, which allows for consistent reservoir fuel level for improved fluid flow even when the fuel level in the tank is low. CHEVROLET > 1985 > CORVETTE > 5. I did test the Black/Yellow wire between the main relay and fuel pump relay and it's good. 1951 Chevy Truck Parts | Chevs of the 40s has the most complete inventory of 1951 Chevy Truck restoration parts and 1951 Chevy Truck street rod parts. The hot wire comes from pin 30 on the relay (J16). Largely enough, the installation of power steering has become a major segment of classic truck upgrading. Average failure mileage is 140,000 miles. Do this by determining the power path to the pump, then undo the fuel line at the frame mounted filter, provide a suitable container to direct fuel discharge from it into, power up the pump with jumper wires for 30 seconds or so and check the volume of gas put out by the pump. How do I know if I have a fuel pump problem with my car. I am told there is another safety switch or fuse , somewhere between ignition switch and the regulator. Voltage at the fuel pump connector with F and B+ jumpered should be at/near battery voltage (normally 12. com! Where to buy diecast cars, tanks and planes. now i have no power to fuel pump. My truck died in a parking lot (better than on the side of the road). You could bypass the relay and add a jumper to prong #87 and the car should start up and run. Shop Xtreme Diesel Performance – XDP for the largest selection of Performance Parts and accessories for your Diesel Powered Dodge Cummins, Ford Powerstroke, GM Duramax and Volkswagen TDI. When I pour gas into the TBI the truck will start but I do not see any fuel spraying into the TBI. Then re-connect it, and attempt to start. #87 is the power out of the relay to the fuel pump 15A fuse. Diesel Power Magazine is now featured at Truck Trend Network. Chevrolet Silverado; GMC Sierra. G6 is the fuel pump. If the fuel pump relay should fail the vehicle will still start once enough oil pressure is created to close the contacts. The most recently reported issues are listed below. 94 S10 Blazer. To demonstrate how to change the chevy small block fuel pump I am going to remove and replace the fuel pump on a seized chevy 305 I recently (May 2007) removed from my truck. Here are detailed instructions on determining if your fuel pump is bad and how to drop the gas/fuel tank on a Chevrolet K5 Blazer or Square Body Truck and replace it. it starts fine with starter fluid but won't keep running. There will be no "vigorous clicking" a fuel pump or circuit opening relay (note word order there is no 'open circuit' relay, there is a 'circuit opening' relay). I removed the engine, had it rebuilt, and put it back in the truck. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. The hot wire comes from pin 30 on the relay (J16). This is a long-term fix that will solve your fuel pump relay problems without the high cost of a new TIPM ($1000+) or the cutting of TIPM wires with an external relay. Where is the fuel pump relay on 1989 Chevy truck? Its on the firewall, passenger side under the hood. You must run the correct wire size to it. This could mean that the fuel pump relay is not the problem behind the no-start condition but to be sure, I suggest going on to the next test step: Making Sure The Fuel Pump Relay Has Power. Whether it's a delivery van or family car, just plug the system directly into your OBD-II connector port for seamless, constant connectivity both inside and outside the vehicle. If figured the fuel pump sucked maybe 7 to 10 pounds but since its was unregulated, i. The relay checks out the fuel pump new one my kid changed thinking that was problem. Fun times! _____. Electrical power to the fuel pump is key. Thought there might be a relay. by Bob O’Neill and Bob Lincoln. There can be many different reasons for this, the most basic of which are shown below. traced fuel pump wires under the truck, through the cab and under the dash. This is a list of what steps I took. Specifically engineered for Top Fuel dragsters and Funny Cars, the all new Dayco Racing blower belt is engineered with carbon and designed specifically for supercharged nitromethane engines. it is about in the middle and there is four of the kinda in a row and the top one is the fuel pump and the fuse that runs it is the ECM B which is beside the relay on the left. We don't nickel and dime you to death, we just offer a simple to use website that almost anyone can operate. I've also checked the fuel pump relay which seems to be working aswell. now i have no power to fuel pump. Ford usually has it on either inside left or right rear trunk fenders. I did not hear the fuel pump working, so I assumed it was bad. Windshield Washer Fluid Pump. When I pour gas into the TBI the truck will start but I do not see any fuel spraying into the TBI. To demonstrate how to change the chevy small block fuel pump I am going to remove and replace the fuel pump on a seized chevy 305 I recently (May 2007) removed from my truck. The fuel pump relay is good the pump is good. Put my ear to the gas cap didnt hear pump turn on. You could have a bad relay. I have a 1990 Chevy 1500 that will not get fuel. Can't even put power to output side of the relay and have it work. The cost of the repairs amounted to $642, and was not covered under warranty. Hey everyone, I have a 1996 Chevy C1500 with a 5. 1979 was defined by the Blazer, Suburban, C/K 10, C/K 20, C/K 30, LUV car lines. There is power on the “A” terminal of the relay, but no power out. Fuses and relay Chevrolet Suburban 2007-2014. What is the Chevrolet S10 fuel pump relay replacement cost? PartsGeek offers several pricing options that range from $55. 3 vortec turns over fine but won't start. Street Carbureted Applications Compatible with all fuels and fuel additives. i'll make a long story short. Blown fuel pump relay (Relay is energized by PCM to route power to fuel pump when ignition is on). We weren't getting fuel pressure initially, and we thought that may have been the issue at first. 2001 Chevy Malibu no power to Fuel Pump. Working on a truck like the Chevrolet S10 can be done either way. So have you checked to see if there is power at the pump. I can't find a fuse link or any thing that it might be. ) A 3/8-inch rubber fuel line connection should be made at the mechanical fuel pump and at the fuel pump send- ing unit. 6 liter Diesel Fuel Filters-Trucks JavaScript seems to be disabled in your browser. Don't hear fuel pump when turn key on. Do this by determining the power path to the pump, then undo the fuel line at the frame mounted filter, provide a suitable container to direct fuel discharge from it into, power up the pump with jumper wires for 30 seconds or so and check the volume of gas put out by the pump. • 87 Chevy Pick-up, Fuel Pump Problems • 87 Chevy Astro, Power Window Problems • 87 Chevy Astro, Door Lock Relay • 86 Chevy Truck, Sticking Accelerator • 86 Chevy Suburban, Oil in the coolant • 86 Chevy Pickup, Spineless Snow Plow • 86 Chevy Celebrity Wagon, No Brake Lights • 86 Chevy Astro, Power Door Lock Problems. of payload capacity. No power @ 30 amp fuel pump fuse and I toggled the fuel pump relay on & off with scan tool. When the ignition is in the "ON" or "START" positions, the PCM energizes the fuel pump relay in. Look up how to deal with that (not hard). For the last few months I noticed that if I hopped in and tried to start it immediately it would crank for aces seconds 5-10 before it started. Included With Junction Block. Well I got it blown 80% back into shape BUT, I overlooked a tiny little problem. Purge valve (solenoid): how it works, symptoms, problems, testing Check Engine light: what to check, common problems, repair options OBD Code P0446 Evap System Vent Control Circuit Malfunction OBD Code P0441 Evaporative Emission Control System Incorrect Purge Flow Code P0455 Evaporative Emission Control System Leak Detected (gross or large leak). Time to test for voltage upstream. Thick bolted up under the box. It is responsible for controlling power to the fuel pump. When the PCM needs to turn on the fuel pump, it energizes the fuel pump relay. Canada’s largest online retailer. Silverado & Fullsize Pick-ups - No power to fuel pump - This is my first post on this forum and I hope that someone of you might be able to identify the problem of no power to the fuel pump. It does sound like you may have a problem with the fuse block at the right strut tower. The ground and fuel-level sensor return both use a black wire. Does fuel pump relay click when you turn key on? If no, could be wiring to PCM or PCM. Power Outlets. The PCM controls the fuel pump relay by applying B+ to the control circuit via an internal switch called a driver. Press OPTIONS to go to the next module. Long Motor Corporation has over 30 years in business, and with over 30,000 truck parts in stock, we ship most orders complete within 24-48 business hours. There is no power to the wire at relay when key is in run. Went ahead and changed front tank sending unit($125) still not working. P1230 Open Power to Fuel Pump circuit. This transfer case has a male 21 spline input shaft and can also be identified by 7 bolts attaching the tailhousing to the transfer case. Ford usually has it on either inside left or right rear trunk fenders. I checked and both ends of this wire (fuel pump relay socket pin and wire at the fuel pump) go to ground. Applications include Passenger and 4WD vehicles, Marine and Leisure applications, Motorcycle, Light Commercial / Truck, Plant, Equipment, Home Security and ride on Lawn Mowers. Components under hood, daytime running lamp. If, like me. There's just no power at the relay (It was replaced). Once the crankshaft has enough power to prepare your engine cylinders for ignition, the spark plug then lights the gasoline in your engine cylinders, allowing fuel combustion to ensue. This article is for owners of the 1981-1985 Datsun or Nissan 720 pickups with the electric fuel pump. If this is your first visit, be sure to check out the FAQ by clicking the link above. It looks like one of the pins that the fuel pump relay slides into might not be making good contact. Cigar lighter / power outlet fuses are located in the Instrument panel fuse box. (One filter choice is AC Part No. TheProStreet Series Engines are the hearts of the Chevy C6 Corvette and Cadillac CTS-V Performance Sedan. I have power clear through to the pump but the pump will not turn on. Where is the fuel pump relay on 1989 Chevy truck? Its on the firewall, passenger side under the hood. Our parts also carry a 24-month Toyota Warranty* so you can feel confident with every service and repair. Discharge the Fuel System. Ford trucks are well know for fuel pump control module failures, for example. Throttle Body. Symptoms of a Bad Fuel Pump. So we jumped the power bypassing the relay and the pump powered up after that. Environmental benefits. Hi Team, I got stuck in Three Rivers, CA, this past weekend and had my truck towed to Visalia Toyota. Went ahead and changed front tank sending unit($125) still not working. If hose comes loose, loss of power steering and power brakes would result. The (master) tech there said there was no power to the fuel pump relay, and when he jumped power from the battery to the fuel pump relay it started and ran fine. The original 6. I am thinking that, because pin 30 also leads off into the warmup regulator area, I should check around there. I would do some checking first as you can replace parts till your broke. 2 L diesel emerged as a high-MPG alternative to the V8 gasoline engine lineup, and achieved better mileage than the General Motors 4. first off, 1996 chevy 1500 vortec engine 4. no service soon light,,i have also changed the fuel filter,,when i had the old one out i cranked it, but no spray came out just a gravity amount maybe,,i also checked the power to the fuel pump ,,no power in lines,,i had the truck serviced the day before for a trip ,,i ran a couple errands in the am and loaded up and left ,got about 3 miles and it just died ,,it wants to run and will just. Get targeted search results for your check engine light. the purple wire should be the right onejust trying to jumper it to get it running temporarily Because: I have replaced the ignition switch, the neutral safety switch, fuel pump relay, fuses, distributor cap and rotorand STILL no spark. Hey everyone, I have a 1996 Chevy C1500 with a 5. This will also backfeed 12V to the fuel pump through the ASD circuit. Chevy Truck Forum. Definitely was confused tho when I didn't see a relay or fuse. From now on whenever you start the car, pause in the run position before cranking it over. ANYBODY GOT A SOLUTION FOR ME APPRECIATE ANY ADVICE. now if you pour gas into carburetor it'll run fine. The original 6. Help diagnosing 87 TBI fuel pump problem 73-87 Chevy _ GMC Trucks » Fuel Systems and This will bypass the relay and feed power directly to the fuel pump. Blown fuel pump relay (Relay is energized by PCM to route power to fuel pump when ignition is on). There will be no "vigorous clicking" a fuel pump or circuit opening relay (note word order there is no 'open circuit' relay, there is a 'circuit opening' relay). Even the best built cars eventually need to be fixed, no matter how carefully you drive; but you can make car repair less expensive and less common. > ALFOMBRAS | FLOOR MATS DESDE-FROM $81-$120. It was good. Hello, the pcm powers the fuel pump relay, thus powering the fuel pump. I have seen on here others with the same problem and have tried everything. 1996 - 2002 GM 6. Forums / Trucks In Snow and Ice Management / Chevy Trucks / Chevy 3500HD (GAS) fuel pump(s) question 4 wire connector I assume to power both the in tank fuel pump.