stalling - 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 09-29-2006, 02:23 PM   #1
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when im going downhill my car stalls sometimes. Could it be that im low on engine oil? I did only put 5w 20 in my car.
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Old 09-29-2006, 02:26 PM   #2
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How much fuel in the tank when it does this?
Current mileage?
Do you know if this is the original fuel pump?

Typically what we see is fuel pressure dropping off at this type of age. A fuel pressure test may reveal the pump as the issue. There are a few other possibles..this is the most common and easy to test.
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Old 09-29-2006, 02:39 PM   #3
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if that were the case what would need to be changed cause gas does come out sometimes from where the two gas lines connect to the back of the engine. I dont know if its the seal or what but every once in a while it leaks gas because i can smell it and ive seen it.
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Old 09-29-2006, 02:43 PM   #4
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Please elaborate more on this fuel leak.
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Old 09-29-2006, 02:52 PM   #5
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Quote:
Originally Posted by scottfanli_00
if that were the case what would need to be changed cause gas does come out sometimes from where the two gas lines connect to the back of the engine. I dont know if its the seal or what but every once in a while it leaks gas because i can smell it and ive seen it.

That happened to my car as well. I didn't find the exact problem but I changed the hanger(fuel sending unit), the fuel pump, the fuel filter, and the three fuel lines coming off of the hanger. My best guess is that it is the hanger though. That fixed the gas leak problem. I'm not sure about stalling though. If your fuel pump is old you may need a new one. I'm not sure but I think that the fuel pumps have a tendency to overheat if the gas is too low all the time. Don't quote me on that though. I think I heard that, not sure...
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Old 09-29-2006, 02:55 PM   #6
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NA..they don't tend to overheat..

He'* a 94. If he suffers from low pressure, it sounds like he may have a leak near the fuel rail that could be working against things. As well..his pump if original is old..
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Old 09-29-2006, 03:29 PM   #7
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so what am i looking at? what needs to be changed?
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Old 09-29-2006, 03:29 PM   #8
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Test first.. replace only bad parts.

Do you have a fuel pressure tester available?
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