Just finished the head rebuild/timing chain replacement on my buddies 01 L200 2.2l.. started it up and Im getting an idle at about 2k rpm. If I give it some gas it goes up and drops slowly back down to the 2k rpm range.. I put the scan tool on it and got a code p300 multiple cyl. misfire. The fan also runs non stop but if I clear the code while the car is running it turns off and then back on as soon as it throws the code again. Getting an ign timing reading of about 8 deg. advanced at ~2krpm. Im assuming with the fan being on its coolant temp sens related but that still doesnt explain the code. anyone have a pic or description of where the cts is? or have any idea where I should start with troubleshooting? new to saturns no idea where to begin. thanks in advance for replies. Edited by: sw2cam

 

I'll look up the location of that temperature sensor in the service manula when I get home. As for the high idle, I'd start checking for vacuum leaks.

 

Yea I thought about the vaccum leak. Didnt see anything that looked bad. Any sections of hose that go bad?
Edited by: sw2cam