Installing a dedicated voltage supply line for your fuel pump . No power to fuel pump on grey wire at fuel pump relay. Learn how we and our ad partner google collect and use data. Hard starts and a loss of power can be a sign that your fuel pump is defective. The device uses information from sensors, such as the fuel pressure sensor and fuel temperature sensor, to determine control of the pumps ground circuit and vary the pumps speed. if that checks out . This can be the hard part. If it fails, the engine management system records this event. If you have a fuel pump harness connector that looks like the flat one on the right or the square one at the bottom, then consider replacing it when replacing the pump. Truck will crank when gas is poured in carb but stops when its burned up. Chevrolet S10 Blazers with fuel injection were designed with an electric pump mounted inside the gas tank. I cant locate it. Fuel Pump Relay In Fuse Box. Fuel Pump Relay Wiring Diagram (Automatic Transmission Only) NOTE: The wiring diagram illustrations in this article cover only: 1993 4.3L, 5.0L, and 5.7L GMC/Chevrolet pickups with the 4L60-E automatic transmission.For the 1994 fuel pump wiring diagram, check out the following article: 1994 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L). Removed fuel tank and discovered the GRAY wire connector on top of fuel pump had burned contact on both sides of connector, however the wire was not burned up, just a little discolor near connector. Check the fuel pump fuse. AFAIK there is no fuse for the fuel pump in this blockthere may be a fusible link at the starter relay byt I don't know which one it is. hook up fuel pressure gauge should be 55 to 60 psi with key on .if no pressure or low pressure [bad pump] if pressure is ok [pump is ok] if vehicle still doesn't start look at ignition system particularly at coil wire they have a tendency to burn through .seen many bad coil wires & many bad pumps Searched forever for an answer. 1997 Blazer Fuel Pump Wiring Blazer Forum Chevy Blazer Forums, size: 800 x 600 px, source: i11.photobucket.com. It turns out that in order to remove the bed of the truck, you must disconnect the ground for the fuel pump, which attaches in the rear on the drivers side. My truck died in a parking lot (better than on the side of the road). It is part of the control system of a fuel pump and its failure, can lead to start up problems. In addition, a fuel pressure sensor lets the computer know; if the fuel pump has not created any pressure, during cranking operation. Chevrolet S10: 1989 Chevy S10 2.5L/5 spd Fuel pump doesnt 1989 Chevy S10 2.5L/5 spd Fuel pump doesn't engage when ignition is turned on. For future reference, I had this same problem when replacing the fuel pump on my 2002 s10 4.3L. 98 chevy s10 2.2 4 prong relay. It reveals the components of the circuit as streamlined shapes, as well as the power as well as signal connections in between the tools. In many newer, returnless fuel systems, the fuel pump control module (FPCM) directly controls the fuel pump. Check the injector for 12v on one wire. Your harness may not have a pin in a location i have listed having a wire. Fuel pump has power but wont pump. My 1998 Chevy S10 No Power On Fuel Pump Injectors Coils Diy Walkthrough For Vcm Ecu Ground Wire Update Chevrolet Forum 9cb8f 1999 Suburban Pcm Wiring Schematic Wiring Resources Often, it's not the pump itself that fails to function, but the power that supplies it. Free Same Day Store Pickup. 2001 S10 Fuel Pump Wiring Wiring Diagram General Helper 85 Chevy S10 Engine Wire Harness Diagram Wiring Diagram 1998 S10 Starter Wiring Schematic Automotive Wiring Schematic Wiring Harness For 1987 Chevy S 10 Pickup Tips Electrical Kenworth Fuse Box Location 2001 s10, fuel pump would not come on. The pcm, engine, and fuel pump all have a good ground. Regardless, they are relatively easy to change once you have access to them. Black and white wire is good ground.fuel pump works when org and grey wire is I have 12 volts on dark green/white wire from pcm to relay with ign on, I have 12 volts on orange wire to relay, constant. Check ECM BATT fuse no.9 20amp if okay check for power at the orange wire on the fuel pump relay socket pin A2 Do a continuity test on the gray wire-from fuel pump connector to the fuel pump relay-At fuel pump relay socket the dark green and white wire powers the coil side of the relay According to the wiring diagram gods, that cable runs from tank to I realy need help with the color and purpose of each wire. Fuel pumps can fail for a large number of reasons. No contaminates in fuel. For the 1993 fuel pump wiring diagram, check out the following article: 1993 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L). There is a shared ground behind the drivers side taillight that is used by the fuel pumppop out your tail light and see if there is a ground (black wire) in the bucket screwed to the sheetmetal . GM flat fuel pump connector. Contributed By: Enginebasics.com . I studied the wireing diagram ,and found chevy has a emergency shutdown of the circut of the fuel wireing , The brales and oil preasur sender are wired to the fuel pump hot wire A long story short THE fuel pump wireing includes a internal ground If the ground to the BODY is lost ,the brakes and rear tail lights draw there ground thru the fuel pump The parts may cost you between $20 and $50, while the remaining cost is the labor cost. Pull it out and inspect it for signs of failure. Fuses are good. I am on my second new fuel pump it ran for 2 weeks then crapped out on me. Had that vehicle been losing power or ground, the current flowing and the pump speed both would have dropped. The signal wire that controls the fuel gauge is purple (PCM terminal C-2 #54). The fuel system in your 1997 Chevy S-10 Blazer consists of an in-tank fuel pump, fuel injectors and an on-board computer. Only) NOTE: The illlustrations and info in this page apply only to 1994 Chevrolet/GMC pickups with a 4.3L, 5.0L or a 5.7L engine. Fuel pump stopped working. Each component should be Below are some of the top illustrations we receive from numerous resources, we wish these photos will serve to you, as well as hopefully very appropriate to what you desire regarding the 2000 Chevy Silverado Fuel Pump Wiring is. OK I have a 96 Chevy I just changed fuel pump but still schematron.org on only GMC Sierra SL Extended Cab Stepside SB. 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. By isolating each component and testing separately from the other parts, the cause of failures can easily be found. i replaced with new one, fuel pump still wont come on. Check out free battery charging and engine diagnostic testing while you are in store. If the fuse is blown, it will be broken or burned. Problem with ground wire from fuel pump connection to truck frame - I changed the fuel pump I changed the fuel pump on my GMC Sierra earlier in the year. 1 wire has 12v, 1 wire has 6.8v, I know wich one is the ground, what is the 4th wire. Replaced fuel pump module with Delphi FG0052 (correct for the 4dr. Generally speaking, you either have to lift the bed of the truck off of the frame, or you need to drop the tank. Sign in to reply. Order Chevrolet S10 Fuel Pump Harness Connector online today. This is a bad fuel pump. what is next (Two ground wires) next to the left tail light was actually the (Fuel pump ground wire). Its a jumper to hot wire fuel pump to test if its working. Assortment of 1998 chevy s10 fuel pump wiring diagram. Not only is a sheet metal screw a lousy way to ground things, this ground path is long and travels through some Fuel Pump Relay Wiring Diagram (Automatic Trans. A wiring diagram is a streamlined standard pictorial representation of an electric circuit. . [ April 23, 2021 ] How To Make DIY Gaskets From Scratch How To & DIY [ April 21, 2021 ] 1954 Ford F100 / 2000 Lincoln Towncar Chassis Swap for Under $1,000 Builds and Examples [ April 19, 2021 ] Converting A Stock 1967 Mustang Coupe Into An Iconic Fastback Builds and Examples [ April 18, 2021 ] This 1964 Buick Riviera is a Stealth Custom Rides & Roadkillers if good check the other wire for a ground witth the key on. model). The fuel pump and fuel tank sending unit ground at a sheet metal screw up behind the spare tire on an XJ, and behind the drivers taillamp on an MJ. The PCM provides what is called a low reference, probably a ground, which is a black wire(PCM terminal C-1 #23). The new pump came with a new connector. Working on a truck like the Chevrolet S10 can be done either way. Fuel Pump Relay Replacement Cost. there is no power on the other two wires. How to re-wire a fuel pump off a relay. Removing and servicing the fuel pump is within the abilities of the home mechanic, but one must always take special precautions when working with gasoline. Flow charts say its near fuse block red wire February 11, 2010. their is a good ground and continuity threw the wire to the fuel pump. Check in your owner's manual for the location of the fuse box, then find the fuse that corresponds to the fuel pump. Question: Fuel Pump Test Wire Location On 1996 S10 Where Is Fuel Pump/oil Press Switch On 93 Caprice. ldmoiles on . Flow charts for fuel pump problems state there is a red test wire on the l/s fender area. S10 Blazer / 1992 / no power to fuel pump relay; No power to fuel pump relay. Chevrolet fuel pump failures are a common and growing problem. 91 s10 4.3 no power to fuel pump was created by gregster With relay same wire is only reading 0.07 volts. Asked on Jun 3. Here is a car that has a good pump but the fuel pressure is dropping because of a restricted tank sock. The average replacement cost of the fuel pump relay is around $90 and $150. I had to replace my fuel pump last week on my 1988 Chevy K5 Blazer, which means I had to remove the fuel tank. Check your repair manual for getting the exact location of the fuel pump relay fast.