2000 Z28 High Idle Problems!!
Thread Starter
Teching In
Joined: Oct 2011
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2000 Z28 High Idle Problems!! Recently I just took off the intake and put new o-rings (upper and lower) on all 8 injectors. I put everything back togeather and all was well for about 50 miles. Now it is throwing 2 codes (both banks lean) and whenever I am rolling and I disengage the clutch the idle soars to 1500-1700rpm it usually is between 700-800. This continues until I make a complete stop then it drops back down. Does anybody know anything I could look for? All help would be appreciated!
Thread Starter
Teching In
Joined: Oct 2011
Posts: 37
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The smallest vacuum leak can easily cause this. I had a small tear in a vacuum line and same thing happened to me. to pin point the location try the brake/carb cleaner method.
PCV hose as it went into the intake behind the TB was cracked on my car and created the same high idle issue. I decided to just do the LS6 PCV conversion, but it took care of the problem.
Thread Starter
Teching In
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Posts: 37
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To everyone facing this problem, the PCV was indeed the problem and through alot of (lean fuel) codes and Mass Air problems. I just took some 3/8 fuel line and attached to the back nipple (where it from 2 hoses to 1) and ran it to the intake with my PCV valve in the line. It runs perfect now and has never ran better. Thanks all for the advice.
