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My fuel pump will start somethings and others time it wont kick on for days when it does kick on as long as we dont shut the truck off it will stay running but as soon as we shut the truck off we get nothing but a click what can cause this
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Make sure your fuel pump is kicking on. When you turn the key to on, you should hear it buzzing for a second or two. Being that you changed the fuel filter and it started, this might be your problem.
i dont believe there is a fuel cutoff switch on that yr but you might want to check the pump take it out and wire it straight to the battery for a few seconds if it doesnt kick on and stay on then return the fuel pump... if it kicks on and stays on then you might want to consider a new sending unit as well as the pump it doesnt cost that much more and then you wont have that worry later down the road
did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.
There so many cause for a car to just shut off. First thing you do is chec for spark. If no spark check for blown fuse. If there is spark check for fuel. Do this by spraying some starting fluid in the air intake. If it starts then dies then it is not getting fuel. The cause can be a fuel pump fuse, clogged fuel filter, or worst a bad fuel pump. If there is spark and there is fuel and it still wont start, check the timing. If timing is good and still wont start or it starts and then stops, then the exhaust is blocked. maybe by corrotion or something.
First thing would be to either test or replace the relay which is under the hood. Do check the fuse as well. you can test power to the relay and also to the pump with a voltmeter. You can test the relay itself with an ohmmeter.
Hello,
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day.
-Steve
well, something is blocking your fuel line, try replacing the fuel filter and clean the fuel pump, rust might be blocking it. if you have time try draining your fuel tank too then get rid of the rusts. this will surely help
Try turning you key on but do not crank it do you here the fuel pump kick on . if not sure try it again and tap the fuel tank with a rubber mallet or hammer. if it starts now you pump is going out ,your gauge ,flote is built to the fuel pump also.
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