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94 z28 chevy camaro fuel pressure check valve location and is there any other names for this item I recently installed a stock replacement fuel pump in my camaro I run 35psi which is low at idle unplug the vacuum line into my regulator it jumps to 45 psi simulating wide open throttle I turn key off and lose fuel pressure drastically I'm thinking regulator or fuel pressure check valve?? if someone could help that would be great thanks

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Do you mean the pressure relief valve, this is located normally on the low pressure or return side of your fuel rail, this is designed to maintain fuel pressure in your fuel rail constant, e.g. steady running requires steady pressure, acceleration requires increased pressure controled by engine vacuum, if it was on the supply line you can not regulate the pressure supplied to the injecters. stopped engine requires no pressure so the pump gets turned off with the ignitionf

Posted on Nov 27, 2013

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SOURCE: fuel pressure problem.I replaced the fuel pump on 2001 chevy s-10

Most fuel injected vehicles have a relay that controls the fuel pump so after the ignition switch has been on for about 5 seconds and the engine is not running, the fuel pump automatically shuts off.
I don't know what your original problem was, but I think if the car runs normally, you have probably fixed your problem. If you don't have a manual, you can probably go to the library and take a look at a manual that covers your vehicle.

Posted on Jan 16, 2009

MNfisherman
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SOURCE: 2001 toyota celica vaccum leak, po171 keeps comingon

problem is most likely your purge canister itself.

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SOURCE: 1992 gmc chevy 350 wont idle when warm

This could be a number of things but i think that your problem sounds like a vacuum leak or an EGR problem. Try listening for leaks and try un-plugging the EGR solenoid valve one time.

Posted on Apr 17, 2009

daves944
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SOURCE: Buick Regal dying

You have a problem in the fuel pump relay circuit for sure then. I'm betting the relay, but it could be that dropping resistor.

Posted on May 11, 2009

  • 1 Answer

SOURCE: 1997 Nissan Hardbody has rough idle/surges/stalls

ok i have the same truck my timing was off 3 teeth but mine wouldn't kick out of high idle is y mine was surging but know with timing right no vacuum leaks i cant get it below 1400 but when a vacuum turns on it almost kills my engine any thoughts i know i got a vacuum line mixed up idk were though

Posted on Jan 19, 2010

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Where is the fuel pump located on a z28 camaro or the had like


Check out the videos. It looks to be on top of the fuel tank, but you can cut a hatch under the back seat.

http://www.bing.com/videos/search?q=fuel+pump+located+on+a+z28+camaro+&FORM=HDRSC3

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I wanna know where is the electric fuel pump relay on my chevy camaro z28 1991. the engine run good when he is clod but stop when he is hot i think is the relay


Sounds like a crank sensor rather than fuel pump. You should check your fuel pressure at the injector rail to get a better idea of the cause.....Mike

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Your Car May have a fuel Pressure regulation Valve, take it to a shop and see if there is an easy way to check it to see if you are loseing the pressure you need to push the fuel through the lines.

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Lack of Fuel


Just because the fuel pump is on does not mean it is delivering the proper pressure. Some systems need as much as 35 psi to function properly. I would look there. I am assuming that you have checked the pressure as you had mentioned that the "Injectors have a lack of pressure" in your statement. Some of the old chevys used to use a "Sock" type filter on the pick up tube in the fuel tank. A possibility? Could be partially clogged. Good Luck

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sounds like a fuel pump struggling to pass its contents. try running a treatment solution in your tank. if this fails to work, you will need a new fuel pump to correct this problem. sometimes, trash will build up in your tank and it will cause build up in the jets. you should check vacuum as well if needed.

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