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06-22-2006, 05:18 PM
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#31 | |
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stupidity should hurt
 
Join Date: Aug 2004
Location: Flint, Michigan
Posts: 10,129
Thanks: 2
Thanked 22 Times in 22 Posts
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Re: Lumina full throttle problem
You need a fuel pressure regulator. Under load, at WOT, the FPR isn't closing, and you're starving for fuel. Since it happens in all gears, it's not tranny related. An FPR can work fine at idle and part throttle, but not close completely enough at WOT due to a pinhole in the diaphram to keep fuel at the injectors. Check the vacuum supply line at the FPR, if it has fuel in it, you found your issue for sure.
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 Still waiting for the "good old days" I'll get to bore my future grandchildren with! |
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06-24-2006, 05:25 PM
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#32 | |
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AF Newbie
 
Join Date: Jun 2005
Location: LaPlata, Maryland
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Re: Lumina full throttle problem
Check the fuel pressure under load. Sounds like a clogged fuel filter.
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07-21-2006, 09:28 AM
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#33 | |
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AF Newbie
Join Date: May 2006
Location: Miami Beach, Florida
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Re: Lumina full throttle problem
Finally, I fixed it. This problem was caused by a faulty crankshaft position sensor. The dealer said that the faulty crankshaft position sensor also fried the computer (ECM) and thats why the computer did not show any codes.
Both ECM and crankshaft position sensor were replaced at a quite hefty price but the car works well now. Taking into account all other replacements (fuel filter, spark plugs, spark plug wires, trottle position sensor, catalytic converter, and both oxygen sensors) it took more than $1000 to fix this problem.  |
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07-21-2006, 12:26 PM
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#34 | |
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In God We Trust
Join Date: Nov 2003
Location: Maple Lake, Minnesota
Posts: 5,971
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Re: Lumina full throttle problem
sounds like hod wash to me. Your car ran? if the cps wasn't functioning, there would be no way for the pcm to know what position of the crank is in, and wont be able to send spark or fuel injector pulses at the right time. Therefor your car would not, and should not have ran at all.
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-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<----- |
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07-21-2006, 03:00 PM
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#35 | |
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stupidity should hurt
Join Date: Aug 2004
Location: Flint, Michigan
Posts: 10,129
Thanks: 2
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Re: Lumina full throttle problem
your dealer is smoking crack. There is no way a bad crank sensor can fry an ECM. I'd avoid taking your car back there, as it sounds like your crank sensor was bad and they hit you for an ECM too.
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Still waiting for the "good old days" I'll get to bore my future grandchildren with! |
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07-21-2006, 03:40 PM
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#36 | |
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AF Enthusiast
Join Date: Aug 2005
Location: Corning, Arkansas
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Re: Lumina full throttle problem
Yep. Either that, or they fried the ECM testing out the CPS circuit..
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2007 Certified DaimlerChrysler Service Technician... True blue GM at heart. |
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07-21-2006, 03:46 PM
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#37 | |
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AF Newbie
Join Date: May 2006
Location: Miami Beach, Florida
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Re: Lumina full throttle problem
Folks, thanks for your comments. I would not go to these guys anymore.
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