Idle Problems

[jorian]

My 3.2 is surging at idle. Goes from 900 - 1100RPM every second. Very annoying. Bentley says a high idle (1200) is a defective switch but doesn't mention the surge issue.

Any suggestions? (Be nice...)

[ausgezeichnet]

I had the same exact problem on my 84 3.2L. I had to upgrade the cylinder head tempature sensor from the old single wire to the newer 2 wire sensor. It took care of the surging.

[vash]

buddy of mine did all sorts of stuff. ZOANAS. maybe do a search under his name. i seem to remember his issue was fixed with a mixture adjustment.

[jorian]

Mike,

Where did you get the Sensor? How much?

Thanks.

Vash,

Thanks for the input. Will search out ZOANAS.

Jorian.

[Por_sha911]

Also, check your ICV (do a search). It can be cleaned (Cost is a little carb cleaner and some time).

[kqw]

When was the last time the O2 sensor was replaced? Also good advice from Joe on cleaning the ICV.

[Tim Polzin]

Before adjusting the mixture, you might want to set the idle adjustment screw. Steve Wong provides a pretty good explaination here (about halfway down):

http://www.911chips.com/dmeconvr.htm

Tim

[ausgezeichnet]

Jorian,

Here is a link to a post I made yesterday that has the part number for the sensor.

Cylinder Head Temp Sensor Replacement Lessons Learned