Help! 1st Time Removing Plenum....now rough idle - ZR-1 Net Registry Forums

jon_d4 · 07-16-2016

94 ZR-1

I just removed the plenum to fix an oil leak from the crankcase vent and tubes. Got everything back together, and I'm getting a really rough idle and the car won't rev above 3k. It runs fairly smooth up to 3k, then it just pulses and shakes violently refusing to go any further.

I've already pulled the plenum back off once to check all of my vacuum lines and that I have a good connection on all of the plug wires. It's still possible that I've missed something, but I've rechecked as much as I can.

It's also throwing a code, but since it's a 94, I can't get the ECM codes by just jumping wires on the connector for the ALDL.

Advance? What is the most likely offender? Thanks for the help.

07-16-2016	#1
jon_d4 Join Date: Aug 2015 Location: Fort Worth, TX Posts: 9	Help! 1st Time Removing Plenum....now rough idle 94 ZR-1 I just removed the plenum to fix an oil leak from the crankcase vent and tubes. Got everything back together, and I'm getting a really rough idle and the car won't rev above 3k. It runs fairly smooth up to 3k, then it just pulses and shakes violently refusing to go any further. I've already pulled the plenum back off once to check all of my vacuum lines and that I have a good connection on all of the plug wires. It's still possible that I've missed something, but I've rechecked as much as I can. It's also throwing a code, but since it's a 94, I can't get the ECM codes by just jumping wires on the connector for the ALDL. Advance? What is the most likely offender? Thanks for the help.