98 z -28 idle surge issues
98 z -28 idle surge issues Just picked up a z28 convertible a couple weeks ago and we can't figure out this idle issue for the life of us!
It's was giving us the lean in bank 1 and bank 2 codes along with idle air control idling high. Noticed the connector was coming apart so we put a new IAC motor and new connector on, . Cleared the code and it's still doing it.
Sometimes the car is fine and runs like it should, but when it decided it's going to surge it runs very hot and the air pump kicks on and off.
When it runs properly it runs at the temp it should and no issues.
Also tried and idle relearn and it did nothing.
All the vacuum lines look good but noticed the brake pedal is really stiff. Didn't know if it was related because vacuum. Only other thing I can see is the throttle body blade is missing 2 screws that hold it in the housing and gets hung up a little.
Have read a bunch of related threads but haven't found the answer.
Any ideas?????
It's was giving us the lean in bank 1 and bank 2 codes along with idle air control idling high. Noticed the connector was coming apart so we put a new IAC motor and new connector on, . Cleared the code and it's still doing it.
Sometimes the car is fine and runs like it should, but when it decided it's going to surge it runs very hot and the air pump kicks on and off.
When it runs properly it runs at the temp it should and no issues.
Also tried and idle relearn and it did nothing.
All the vacuum lines look good but noticed the brake pedal is really stiff. Didn't know if it was related because vacuum. Only other thing I can see is the throttle body blade is missing 2 screws that hold it in the housing and gets hung up a little.
Have read a bunch of related threads but haven't found the answer.
Any ideas?????
