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

lt1 Hesitation after warming up

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Old 05-17-2011, 10:29 PM
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Default lt1 Hesitation after warming up

Hey everyone,

It's been a while since I have posted here, but I am having some trouble with my 94 355 lt1 T/A

I have a new 355 in the car and ever since I have had the new motor in I have had a weird throttle hesitation after the car warms up. The problem seems to increase as the car gets closer to operating temperature and is worst at low RPMs. I have been thinking it may the opti, but I am not really sure where to start chasing this down. Any suggestions?
Old 05-17-2011, 10:34 PM
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Have you datalogged it to check the o2s?

That is usually the cause of drivability issues that only occur when warmed up.
Old 05-17-2011, 11:07 PM
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Originally Posted by Puck
Have you datalogged it to check the o2s?

That is usually the cause of drivability issues that only occur when warmed up.
I have not datalogged it yet as I don't have the necessary tuning equipment or software for that. The car currently has a mail-order tune from PCM4Less and brand new o2 sensors.



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