C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Small Problems After Intake Upgrade

Old Aug 5, 2009 | 08:36 PM
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Default Small Problems After Intake Upgrade

OK, i finally got this thing all wrapped up. I pulled the dist and reinstalled it the right way this time, started the car, adjusted the timing to 6 degrees BTDC, and drove the car.

MY CRUISE IS GONE! I deleted the EGR, would this have anything to do with it? I plugged a vacuum line (the one that goes to the throttle body and would have gone to EGR valve put i put a screw in it and plugged it)

Every once in a while it surges @ idle, it seems to be completely random as to when it does it..is this related to the cruise control/vacuum line?

and it seems to stumble a bit under 1200 rpm, i think this may be the TPS, i still have to readjust it. or vacuum?

Other than that, it runs like a champ! Much better than it was with all the stock stuff.
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Old Aug 5, 2009 | 10:09 PM
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Check for vacuum at the cruise control, either use a gauge or pull off the hose with the car running and check for vacuum.
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Old Aug 5, 2009 | 10:43 PM
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Originally Posted by John A. Marker
Check for vacuum at the cruise control, either use a gauge or pull off the hose with the car running and check for vacuum.
10/4 Will do tomorrow
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