Question about 2002 Jeep Wrangler

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After warmup crusing speed ok. after that at idle 0 pressure ?

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I would say maybe your fuel pressure regulator is bad or u have a faulty fuel pump.

Posted on Aug 23, 2010

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1999 chevy van, 7.4 v8 eng. surges and wants to dye out at idle, otherwise ok. possible causes?


fuel line, with that you most likely got ( gross, oh goodness, eww, yucky) sludge in the tank that is most likely in the lines as well. did the van sit for a long time. if so the first thing u do is drain the tank an put new fuel in it so sludge (dirt) don't happen. hope i helped good luck

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I have a 1984 GMC high sierra, I can start it and it will idle, but once I press the gas pedal to rev it, or pull it and gear and try to move it, it stalls out, any ideas what could be causing this...


Generally speaking I would guess lack of fuel. The carb has three circuits - - idle, cruse, and accelerate. It can be ok at idle but not getting enough fuel when you try to speed up.
Could also be a vac leak or other problem including the fuel filter.

Jul 31, 2013 | GMC Sierra Cars & Trucks

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Not a problem , just wanted to know what oil pressure should be on a 1999 chevy blazer after running for about 15 min.


it can very greatly depending on the engine, miles, tempture.... but a good rual of thumb is any thing over 15 psi at hot idle is ok and any thing over 30 but under 70 at cruse is ok

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Sounds like a vacumn leak. Gasket under intake plenum may be leaking. Be sure the pcv valve has the o-ring around it in the correct place also as it will set a code.

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1988 cutlass ciera boggs down when i accelerate


Hello! You have symptoms that point to incorrect fuel pressure.
First have the fuel pressure tested as follows; #1...engine running at idle: 13- 20 psi. #2...key on engine off: 23-30 psi. If pressure is incorrect change the fuel pump.

Does the engine "surge" at idle? If so, check the "fuel injection pressure regulator idle air control valve". Apply a vacuum to it; If fuel flows it is not the problem.


Guru.............saailer


Dec 13, 2009 | 1988 Oldsmobile Cutlass Ciera

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look for a diagram under the hood follow the route for each vacum . you have a intake leak take your time and go over each side of the engine even plastic air line could be cracked

Aug 17, 2009 | 1999 Ford Mustang Cobra

1 Answer

4.3 Liter V-6 Idles rough when in gear, runs fine on highway.


Can you check fuel trims at idle and under load?
If fuel trim is high at low speed and load, look for a vacuum leak.
If fuel trim is high at high speed and loads, look for fuel volumn problem or restriction.
If fuel trim is high at all speeds and loads look for pcm input fault, maybe a maf sensor problem?
If fuel trim is negative low speed and load, look for fuel pressure regulator or injector leak. If fuel trim is negative at all speeds and loads check ect and iac.

If you have the spider fuel system, that system is noted for problems. key on engine off, 60--66 psi fuel pressure.

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1 Answer

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Have u verified the oil pressure with a mechanical guage? this may just be a sending unit, if the engine had no pressure the lifters would be rattling like crazy at idle.

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