95 hesitates-surges - 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 01-07-2010, 12:55 PM   #1
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Default 95 hesitates-surges

Been trying to figure this out for the last couple of weeks now. Anytime I get between 2k-5kRPM, the engine seems to hesitate or surge, low power in the butt dyno. I can really hear it in the exhaust(what little exhaust I do have left).

It idles fine, purrs like a kitten.
Pulled the sparkplugs, checked the gaps, cleaned them up.
Checked the plug wires-ok.
Checked the coil packs, found 1 bad. Swapped it out today, no change.
Checked the MAF, cleaned it-no change

Did I miss anything?
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Old 01-07-2010, 02:31 PM   #2
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Any gear in particular?
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Old 01-07-2010, 02:38 PM   #3
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All gears.

I can manually put it in 1st and slowly climb high in RPM and almost pinpoint the RPM'* where it will start doing it. Almost tempted to grab the camcorder and shoot a clip.
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Old 01-07-2010, 02:47 PM   #4
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My reason for asking was to find out if it was a high load TCC type surge. That would be 3rd or 4th only though.

do you have the maf screen in place?
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Old 01-07-2010, 02:57 PM   #5
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Yes, MAF screen is in place and free of bugs, twigs, and body parts.
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Old 01-07-2010, 03:18 PM   #6
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You said you can hear it in the exhaust. What does it sound like? Does it seem to sputter?
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Old 01-07-2010, 04:13 PM   #7
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like a miss or something. Sounds like a cylinder doesn't fire.
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Old 01-07-2010, 04:24 PM   #8
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How'* your fuel pressure?
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Old 01-07-2010, 04:47 PM   #9
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Haven't verified the FP yet, and the only way is to get my but to AZ, but currently I'm stuck at home with daughter.
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Old 01-08-2010, 12:49 AM   #10
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humm one way to check the plug wires for leaks is soap water spray it on the plug wires and it will show u which one is bad if there is one ... but i wouldnt suggest driving the car untill its all dried up and it doesnt take allot just one spray to dampen not soak the lines lol
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1995, 3.8. l67, 3800, bonneville, bonnie, hesitation, ponitiac, se, sle, sse, ssei, surge

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