Question about 1994 Chevrolet Caprice Classic

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My car will crank but won't stay running, i replaced my alternator and my fuel pump relay but it still won't steay running

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Could possibly be the anti theft system. This system can actually turn off your fuel injectors 1-5 seconds after starting. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on May 29, 2011

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Ran out of gas, car wouldn't crank replaced fuel pump, fuel relay, and in line fuel filter and still won't crank on 2002 chevy avalanche


still won't crank ? how's your battery ? starter ? starter solonoid ? if your engine does'nt crank , its dead ! would'nt you check the battery first ? then move on with checking the starter circuit ? seems like your putting the cart before the horse ! first of all, when you run out of gas, you need to replace the FUEL FILTER, your engine just sucked the dirt, garbage, etc., out of the tank. there's plenty of sediment in the tank, don't know how it gets there, but, you'd be surprized ! talking threw experience !!! I operate heavy equipment, its a cardinal sin to run out of fuel !!! you say you replaced the inline filter, which one, up by the engine or the main filter, under vehicle along frame ? are we talking about the same animal, PLEASE CLARIFY !

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If your fuel is running all the time the PCM is bad if you take your relay out and the fuel pump stays running its a short

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Check the fuse 1st, then change the fuel pump relay with another relay the same but something like headlight relay or something that won't stop the car from working. Check for power at pump while the key is turned by someone else to the on posision & while cranking, some vehicles run fuel pump power through alternator circuit so will only get power while cranking & drive belt on

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If the engine fires up for a second or two with starting fluid then the fuel pump is weak.I would check the fuel pressure and if its not within the specs then replace the pump and filter.

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Bogging


Make sure the fuel pump is kicking on it won't hurt to check the relay but I have never seen one bad yet it could be the plug on the plug on the end of the wires that plugs on the pump this run hot and it burns the ends alot several fuel pumps are replaced because of this make sure you have power at the pump if you can't hear it run it will only stay powered for a few seconds and then kick off. so you might need someone to turn it on while someone checks the power.

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GMC 2000 sierra pick up 1500 sounds like it wants to start but won't turn over. Battery sounds good so I guess battery and alternator are ok. For several years fuel gauge doesn't work and...


It sure could be. But, first...by "won't turn over" you do mean it cranks at normal speed but won't start?
A simple test of the fuel pump is to stand by tank and listen as someone turns key to on. When first turned to on, your pump will activate for 2 or 3 seconds, pressurizing the fuel system, and then shut off if the engine computer doesn't get a cranking signal. Do you hear it come on? If not, then something's not turning your pump on. If you can hear it buzz on briefly, then maybe it's your filter. Another test: Spray a little starting fluid into your intake manifold (remove the big hose going into intake manifold) while someone tries starting it.If it doesn't fire and try to stay running, then it's probably an ignition problem. But if it does fire off, then you know it's a fuel problem-likely your pump or filter. good luck.

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How do you test the fuel pump relay on a 1991 Toyota Celica 1.6 Car just died and won't crank. We changed the ignition coil and still won't crank. Fuel pump is working. Toyota place does not check...


If the car will not crank then you have a battery, cable or starter issue. If the car will crank but not start then the problem may be the fuel pump relay. There should be an electrical diagram on the side of the relay. Apply 12v to either side of the coil and you should here a click. Then check for continuity between the other two terminals with voltage applied. If you have no continuity then the relay is bad.

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