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95 hesitates-surges

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Old Jan 7, 2010 | 11:55 AM
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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 Jan 7, 2010 | 01:31 PM
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Any gear in particular?
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Old Jan 7, 2010 | 01:38 PM
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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 Jan 7, 2010 | 01:47 PM
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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 Jan 7, 2010 | 01:57 PM
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Yes, MAF screen is in place and free of bugs, twigs, and body parts.
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Old Jan 7, 2010 | 02:18 PM
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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 Jan 7, 2010 | 03:13 PM
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like a miss or something. Sounds like a cylinder doesn't fire.
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Old Jan 7, 2010 | 03:24 PM
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How'* your fuel pressure?
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Old Jan 7, 2010 | 03:47 PM
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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 Jan 7, 2010 | 11:49 PM
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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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