SOURCE: 92 Chevy Suburban Electrical Fuel System
I assume the fuel pump fuse is good?
The only time voltage will be sent to the fuel pump will be the first 2 to 3 seconds if the starter is not engaged. You will want to crank the engine over and check for voltage on the load side of the relay, circuit #30 at the relay.
Let me know after you check.
Regards,
SOURCE: 1991 camaro RS Fuel pump not working- no power to pump
If the oil pressure switch has two wires on it it may be one that shuts down the pump. I'm not positive but I think it completes a ground circuit, not the hot side though (but may run through a relay.) There should be a pump relay under the hood with a group of other relays. I don't have a wiring diagram for your car but you can get a basic diagram in most inexpensive manuals. They wont usually give you locations but at least you can get an idea of how the system works. There usually is a fuse. If the fuse block is not labeled, use a test light and probe the back of every fuse for power with the key on (takes about ten minutes and faster than trying to find info) change any that are blown. The most likely culprit is a relay, so after testing fuses look for it. (usually on drivers fender or on right side near firewall.) Worst case, trace the power lead all the way through the harness 'till you find where power begins.Testing is important here...I could give you much better info if I was there to do it for you. Most important is to stay "on track" till you find the place where power ends. Don't jump all over the place or you will end up doing an incomplete test.
SOURCE: 1996 chevy tahoe fuel system
i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
SOURCE: replace fuel pump on a 2001 chevy cavalier
First, if your car still runs, pull the fuel pump relay, and start your car, letting it run until it dies. This will depressurize the fuel system. Then you must support the fuel tank, and take loose the straps that hold it up. Slowly lower the tank until you can unhook the tank filler hose and overflow hose by taking the clamps off and sliding the hoses off. lower it some more, and unhook the fuel lines; they require you to insert a special tool around the edge of the connection, however this can be improvised with screwdrivers or a piece of plastic or metal bent into a C shape. Next unhook the wire connection. Once you get it down, it's easiest to empty as much fuel as you can; as this will help you get it back into place. The fuel pump is inside the tank, which locks into place with a 1/8th turn. You will need a hammer and a brass punch for this job, as it needs to be tapped around to unlock. It will then lift out. Compare the two pump assemblies. The inside parts can be slightly different, but ensure that the fuel lines are IDENTICAL and the wire connection is IDENTICAL. The new one will come with a new silicone seal. Ensure that you don't put the new one in in such a way as the float doesn't bind, otherwise you'll be doing this procedure again if you don't like guessing how much gas you have. This can be a challenge to wrestle with putting the new one in, as you have to push it down to compress the new seal, and turn it to lock it. Once you get it started, you can let up and use the hammer and punch again to tighten it the rest of the way. Next, put it back together just as you took it apart, and don't forget to hook up the wires, hoses, and fuel lines. No tools required for the fuel lines, they just snap together. Once everything's tight and hooked up, put gas back in it, and if you haven't already, put the fuel pump relay back in. This you can do as soon as the car dies, and is completely optional if the car won't run at all. You are now ready to start it up, but turn the ignition on to the run position, wait a few seconds for the pump to pressurize, and then start it. Have fun, and feel free to ask any questions should you have any.
SOURCE: replace a fuel pump on 2000 chevy cavalier
REMOVAL & INSTALLATION
(see
Figures 1 and 2)
CAUTION
The fuel injection system remains under pressure, even after the
engine has been turned
OFF. The fuel system pressure must be relieved before
disconnecting any fuel lines. Failure to do so may result in fire and/or
personal injury.
WARNING
The modular fuel sender assembly may spring up from its position.
When removing the modular fuel sender from the tank, be aware that the
reservoir bucket is full of fuel. It must be tipped slightly during
removal to avoid damage to the float.
To install:
Gently pull on the fuel pump reservoir from retainer to assure a
secure fastening. If not secure, replace the entire fuel sender.
Fig. 1: The module fuel sender assembly is mounted in the
fuel tank
Fig. 2: Modular fuel pump component identification
Hope this help to solve your problem (remember comment and rated this).
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