Issues random high idles

[HuskerNation]

Hey guys. I know there are threads about doing the Idle Surge deal, and I am going to be doing this tomorrow. I cleaned, and greased up the Salt & Pepper connecters already, and this issue is still happening.

Here is whats going on:
At first this was once a month, and now its gone to a daily thing, multiple times sometimes. Cold start up, the car is fine, idles about 700 RPM. When I leave my place, and get down the street, it seems like the throttle doesn't close all the way. It will stay at about 1K-1200 RPMs. There have been occasions where I will let off my throttle while driving and it stays at 2K. This is not safe nor good. I will be digging in and doing all I can tomorrow and maybe wanted to see if you guys would recommend looking at other things as well. I also might want to mention, that when this idle thing happens, I will shut down the car (sometimes rolling with no traffic) press the gas a few times, and restart the car and it goes away. Also, after initial cold start, I will run to the gas station, and when I get back in and start it up, the idle jumps up and down, when I tap the gas, it feels like it hesitates and bogs down, after letting it sit, RPM's will stay at normal position.

Please let me know if I need to look into other things as well. I have tried to listen to vacuum leaks, and can't hear anything.

Thanks a lot!!!!

 

[red-fox]

Try cleaning the IAC. If its full of carbon it will make it do exatly what your explaining. My car was doing the same thing and I ended up pulling off the IAC and it was pretty nasty looking. I just filled it up with electrical contact cleaner and used a Q-tip to clean it up and it went away.

 

[jrichker]

See the "Surging Idle Checklist” for help with all your idle/stall problems. You can guess at the problem and throw parts at it, or you can use the checklist to help you find the problem quickly and inexpensively. It’s free and doesn’t cost anything: at last count there were more than 103,000 visits and still climbing

The quick and easy way to dump the codes is in there too, and all you need to do it is a paper clip! The first two posts contain all the fixes & updates. At last count there were 24 possible causes and fixes for surging idle/stall problems. I continue to update it as more people post fixes or ask questions.