About the smoke - I've not noticed any from this vehicle before. It was white (lt. Gray?) Smoke that wafted around the car and continued on - not steam.
AutoZone did a scan;
Trouble shooting P2004
Intake manifold runner control (IMRC) stuck open
ECM has commanded the IMRC closed but detects it open
1 - short circuit condition
2 - damaged IMRC actuator or solenoid
3 - blocked vacuum hose
I found the IMRC/actuator below and behind throttle body. I watched the rod leading up from IMRC/actuator. As engine started the rod went down. After a second or so the rod came back up and the RMP's settled down. After 3-4 seconds the rod went back down and the engine went up to rather high RPM's. After about 2 seconds the RPM's started going down but the rod stayed down even as the RPM's went down to normal idle. I see nothing to indicate a short. I followed the vacuum hose under IMRC/actuator to where it joined another hose under manifold then hose went behind manifold. I saw no kinks or bends.
I really need to repair this myself as to $$. Not what I need 2 days before leaving on 800 mile round trip!
Any thoughts or suggestions greatly appreciated.
Wednesday, July 7th, 2010 AT 3:13 PM