Sluggish when warm - 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 06-27-2005, 05:07 PM   #1
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Default Sluggish when warm

Hi all,

I've got a '93 SE that runs just fine... until the engine warms up. Then it starts lacking power when going over 30 mph or uphill. It seems like it'* not getting gas, it kinda shudders... hard to describe. I've done some searching of old posts and it seems like it might be the fuel pump, does that sound likely? The fuel filter is new.

Thanks in advance for any help and sorry if I haven't described the problem terribly well!
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Old 06-27-2005, 05:10 PM   #2
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How many miles ya got?
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Old 06-27-2005, 05:32 PM   #3
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167K+. I've only driven it 25K of those, before that it belonged to my uncle who passed away. No idea what type of maintenance, etc. he did on it, but I suspect not much.
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Old 06-27-2005, 05:34 PM   #4
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Do you have any way to check fuel pressure?
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Old 06-27-2005, 07:17 PM   #5
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Sounds like a clogged cat to me.
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Old 06-28-2005, 04:43 PM   #6
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Bill- I dunno about checking the pressure, I'll have to ask my friend who does the actual work. He'* not too good at using the internet, like I'm not too good at fixing cars. What would that tell me?

Vital49- This might be a stupid question- but why would a clogged cat screw up only when warm?

Thanks!
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