LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Hesitation, maybe surge 1-2.5k?

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Old 09-04-2015 | 04:35 AM
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CBowman622's Avatar
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Default Hesitation, maybe surge 1-2.5k?

Hey guys, I have a 95 Trans Am, ram air, cc306, egr delete, ewp, long tubes, and full exhaust.

I seem to be having an issue that happens after the car is warmed up, if it's not at operating temp it seems to not do it. It will bog/hesitate a little at first but if you keep driving it, the worse it seems to get.

It starts right from idle usually, will bog until you push the throttle more then it seems to snap right out of it and runs fine. Anywhere from 1000 to 2500 rpm seems to be the sweet spot. Makes just trying to cruise around town a pain in the rear.

Also when just at idle and warmed up, the Oil pressure sneaks below 20 sometimes then if you hit the throttle it goes to 40 or a little over. Noticed that also seems to bog it down quite a bit.

Pulled codes because it throws the cel once and a while if you are just cruising around town in lower RPMs, comes up as "Left oxygen Sensor error bank 2" and a.c. pressure sensor (A/C deleted)

Any ideas or advice would be greatly appreciated. Thanks!
Old 09-04-2015 | 06:17 AM
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Is the car tuned for the cam?
Old 09-04-2015 | 07:19 AM
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Just a mail order tune, sorry I probably should've mentioned that.

Last edited by CBowman622; 09-04-2015 at 08:03 AM.
Old 09-04-2015 | 08:31 AM
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Miles since the cam install? Sounds like it's in the tune to me; is the tune newer?
Old 09-04-2015 | 03:36 PM
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Probably your electric water pump.
Old 09-04-2015 | 03:47 PM
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Lol just messing with you. Probably the tune. Tune is crucial on a bigger cam like the 306.
Old 09-04-2015 | 07:39 PM
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Default Hesitation, maybe surge 1-2.5k?

Find and fix the O2 issue, that will effect it greatly. If that doesnt cure the issue, look at the tune. You'll want to make sure the O2 tables are corrected for your mods.



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