Loss of power under load - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-27-2007, 06:53 PM   #31
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Wow thanks for the quick info, I will go out and test these now!!
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Old 02-27-2007, 07:25 PM   #32
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brilliant right...I cleaned up the posts and everything just to make sure there was no corrosion or anything and what do i get when i try to go and read the codes....NONE....thats right there are none now cuz i cleaned the terminals....but what do u get out of the fuel psi readings i posted?
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Old 02-27-2007, 08:21 PM   #33
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the codes will come back if they are still present... wait for the light...

12 psi is horrible... i would maybe start with the fuel filter like doug said
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Old 03-01-2007, 01:59 AM   #34
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Well i officially feel stupid today. Went out to change the fuel filter cuz the car isnt throwing any codes for me. Little history on the car I totally forgot about. Long story short i had a fuel line rupture on the fire wall and had to replace it. My quick fix with what i had was to install new tubing. Did this and all was well, until i went out tonight and tried to put in a new fuel filter. See i ran new tubing from off the fuel rail down to where the previous owner had a fuel line break, worked great or so it seemed. I accidently cut the fuel filter out of the system completely. So yeah thats where I am at the moment. Car still runs ok but not perfect when cold, runs like total crap after you drive it for about 1/2hr...dont know what to do next....my fuel psi drops to almost nothing when I have it WOT, maybe a fuel pump...or injectors or something?
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Old 03-01-2007, 02:39 AM   #35
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It'* pretty much sounding like your fuel pump isn't able to keep up with the demands, and likely needs replacement. Another possibility is a clogged strainer sock, but that'* attached to fuel pump, so it would have to be pulled anyway.
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Old 03-01-2007, 08:04 AM   #36
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my suggestion is to zip off a set of injectors for cleaning at FIE a recognized vendor. Great service and he turns them around quick. Ensure those screens aren't clogged from debris. However with the fuel pressure you are posting, I'm not surprised your car is dying. You need to replace the fuel pump and strainer sock (along with adding a fuel filter.

92 tanks are known for internal issues, and you may want to consider a tank while you are at it. Last time I priced a tank it was around $70 (matter of fact..I'm gonna order one today..mines rusty and getting a new pump).

Once you get a fresh pump, good fuel filter and clean injectors I'd think you will be all set.

I have seen pressures that low before.. car would surge, buck and overall not want to stay running on corners and hills.
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Old 03-02-2007, 01:27 AM   #37
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So this coming weekend I am goin to replace the fuel pump. Couple questions, which one is the right fuel pump? I have researched them online cuz they seem to be much cheaper on here, and found that my car has had a couple different ones that could work or so it seems. Just wondering if anyone had a pic or any info on which one I need. Its a 1992 ssei. thanks for any info!!
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Old 03-05-2007, 06:26 PM   #38
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HOORRRAYYY!!!
My bonne is all back up and running. Put the new fuel pump and strainer in and it runs like a dream. Just wanted to update u guys and thank you very much for any and all help given to me. You guys rock the house and again i thank you for all help and ideas for fixing my beast as i call it. Oh and for anyone who needs a fuel pump i checked all over the internet for the darn thing and the cheapest i found was at partsamerica.com. Thanks again and I will be back if she decides to go **** up on me again
CHEERS
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Old 03-05-2007, 08:25 PM   #39
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congrats
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Old 03-05-2007, 09:11 PM   #40
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Great news! Now what about that fuel filter?
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