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hesitation

 
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PostPosted: Sun Jun 25, 2006 3:54 pm    Post subject: hesitation Reply with quote

I'm having a hesitation/stutter problem on a 99 SC2 and it started after pulling the motor to reseal the timing cover and change to a light weight flywheel...

The hesitation/stutter only happens when the car is warmed up.

When idealing the car is fine 15.1 on the wideband but when I step on the gas and it does the cut out it reads like 17.1 for a second then it goes to 12 and back to 15.1. Sometimes I will get the po172 code. What's funny is it has the same cutout as if it had MSD and no cam sync generator.


Here is what I have replaced or checked
CTS
TPS
CPS
IAC
MAP
Injectors
Fuel filter
Spark plugs
spark plug wires
PCM
Ignition coils
Ignition Module
Front o2 sensor
Fuel pressure was @ 60psi
Checked for vacuum leaks

Compression test went (11:1 pistons)

Engine Cold
#1 255 #2 245 #3 250 #4 255

Engine Warm
#1 265 #2 250 #3 250 #4 250


Can anyone think of what else might cause this problem
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BC.Live Wire






PostPosted: Sun Jun 25, 2006 5:08 pm    Post subject: Missing Post Reply with quote

Missing Post # 389419, The text of this post does not exist
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PostPosted: Sun Jun 25, 2006 5:13 pm    Post subject: Missing Post Reply with quote

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project_sl-2






PostPosted: Sun Jun 25, 2006 6:08 pm    Post subject: Missing Post Reply with quote

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PostPosted: Sun Jun 25, 2006 7:51 pm    Post subject: Missing Post Reply with quote

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