Question about 1996 Chevrolet Blazer

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It doesn't want to start when its sat for over 5 hours. But if I turn the key to the on position 4 or 5 times to run the fuel pump it will start. What could cause this problem? Thanks steve

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Most likely it is your ignition control module located right under the key switch. i know it dont sound related but if this unit goes it causes all kinds of wierd problems such as: fuel pump not working, gauges, intermittent power, transmission limp mode ect.

Posted on Jul 12, 2010

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Most likely fuel pressure regulator or injectors under intake plenum leaking fuel. Remove intake plenum look for washed down intake. It will visibly be clean & no carbon build-up. Energize fuel rail. With plenum off, reattach fuel line. Turn key to run. Watch for fuel leaking in back (fuel pressure regulator) or out nylon lines (fuel injectors). Very common problem.

Posted on Jul 06, 2010

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1 Answer

Hey there, just bought 91' GLI 5-door hatch Nissan Pintara, Stanza same car. Has a ca20e 2.0 liter, fuel pump not pumping fuel to Filter, Engine etc. I have just spent 4-5 Hrs on it, it hadn't been started...


If it sat that long, a fuel hose can swell inside and pinch off fuel flow. If the tank was really dry, flakes can plug the pickup sock too. Try this. pull the small diameter wire off the starter and then hold the key in the start position. This will run the pump without cranking the engine. If you can hear the pump running, keep the key in the start position until the fuel lines are full. The pump will slow and become quiet. When that happens, put the wire back on the starter and try starting it.

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Car won't stay running after sits overnight and runs good after you do get it started


In the morning, turn key to on position for 5 seconds. Do not crank.Then turn off for 5 seconds. Repeat this about 5 times. Then try to start. If engine starts right up, the fuel pump check valve is bad. Meaning all fuel in fuel line is returning to the tank when car sits overnight. The only fix is to replace fuel pump. If that doesn't work, replace coolant temp. sensor for the computer. About a 12.00 part.

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My 2004 cavalier will not turn over without excessive pumping of the gas pedal. Battery, starter and everything else seems to be fine. Is it the pump or something else?


Try this next time you start it. Turn the key to the run position, do not start the engine. Wait 3-5 seconds and turn the key off. Turn the key right back to the on position and wait for 3-5 seconds. Turn the key off. Repeat the above one more time. Now try to start. If it starts right up you have a fuel supply problem. Either the fuel pump is bleeding off or the fuel pressure regulator is leaking. Pumping the pedal is doing nothing besides buying time for the fuel system to pressurize. Post an engine size and I'll help you locate the fuel pressure regulator. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Jan 18, 2012 | 2004 Chevrolet Cavalier

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I have a 97 jeep grand Cherokee, when it has sat for over an hour it takes 8-10 seconds of the starter running before it starts. If turned off after running, and started within a few minutes no problem,...


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2003 Chrysler town & country limited


First try and change the fuel filter. this also happened on a van i worked on. I cahnged the filter and it runs fine now.

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3 Answers

WHY DO I HAVE TO POUR WATER ON MY FUEL RAIL AFTER IT IS HOT SO THE ENGINE WILL START


Hi James,

That is a real good question. Have you checked the fuel pressure on the fuel rail to see how much pressure there is when it refuses to start? It sounds like you may be losing your fuel pressure because of the fuel returning to the tank when the engine is hot. This could be due to a faulty fuel pump assembly or a faulty fuel pressure regulator.

Try this: When it doesn't start, turn the key OFF and wait about 15 seconds, then turn it back to the ON position (do not try to start yet). Repeat this a second time, only this time turn the switch to the START position. If the engine starts, then it is definitle due to loss of fuel pressure in the fuel rail. You will then need to test your fuel pressure with a gauge and plug off the return line to determine if the problem is being caused by the regulator or the pump.

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1 Answer

Vehicle starts runs for 2 seconds then shuts off 2006 santa fe 4 cyl standard, not the battery started multiple times and shuts off after 2 seconds every time what is it?


Possibly a weak or dead fuel pump. Try disconnecting the fuel line where it enters the fuel rail ( the metal tube that the injectors are attached to.) Have someone turn the key to the "RUN" position, (not "START") a few times and observe the fuel flow. If it appears weak, then you probably have a bad pump. Be sure to capture the fuel that spills out and DO NOT attempt this while the engine is hot. Altenatetively, you can have someone turn the key "ON" and off a few times while you listen for the humming sound of the pump at the fuel tank. But just because you can hear a humming sound doesn't always mean the pump is operating to capacity. If this doesn't help, reply bvack and we can go from there. Good luck!

Jun 02, 2011 | 2004 Hyundai Santa Fe

2 Answers

Have a 98 gmc 5.7 truck have to prime to start truck.


Sounds to me like either your pressure regulator is bad or you have a loose fitting somewhere in the fuel line from the fuel pump to the engine. When you turn your key to the on position, you should hear the whine of the fuel pump until it builds pressure. When you shut the truck off the pressure regulator should retain the pressure for a certain amount of time but if it don't close then air is allowed into the fuel line and the fuel drains down to fuel line away from the engine. Next time you try and start the truck after it has sat for a while try turning the key on until you hear the fuel pump whine shut off, then repeat it 3-5 times and then try to start it. Basically that is running the pump enough to get the fuel back up to the injectors. Check for loose fittings in the fuel line, or cracks in the fuel line and if all that is fine then replace the regulator.

Hope that helps

Oct 03, 2009 | GMC K1500 Cars & Trucks

2 Answers

Ran out of gas< put gas in now car won't start


you have to turn the key on to run position then off listen to see if pump runs if it does turn the key to run position and off several times before you try to start engine. once you have done this 10 to 15 times push pedal halfway down and crank the engine. Does it run? problem solved if it does not replace fuel filter, since you ran it out of gas it has pulled the fine garbage out of the tank and has plugged the filter. if you do not hear the pump run then your pump may have burned out. In cars that have electronic fuel injection you need to keep about 1/4 of fuel in the tank at all times. The reason is the fuel is a cooling agent for the fuel pump located on the inside of the tank when there is less than a 1/4 tank the pump can heat up and burn out. I gave this information to you for future reference so you save yourself money, the pumps are not cheep. So do the first proceedure then replace the filter if it does not start. This should fix your problem. There is also a fuel sock or strainer in the tank, I have seen these sucked flat and not allow the fuel to run so it has to be replaced. The first guy has more advanced answers these should be tried first before looking at those problems he suggeted.

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1 Answer

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could be your fuel pump relay you should check to see if the pump runes for about 3 sec. when you turn the key to the on position. It should if not the oil switch is turning on the pump after you achieve pressure.
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