Thread: High Idle Problems (After Intake Gasket Replacement)

Start the car a spray carb or brake cleaner around all the vacuum lines, TB, EGR tube (the metal accordian one that likes to break and hide leaks) and the UIM. Might just have a big leak. Also check the big vacuum line at the firewall side of the UIM where the line from the brake booster connects. Also, check the MAP sensor if you removed it.

Found the problem yesterday. The throttle body was not properly seated properly allowing it to suck a bunch of extra air. Backed off the bolts and re torqued them and idle is fine. So you were right I did have a big leak!!! Thanks for the help.

After some checking with a code scanner the TPS bit the dust during the repair. After new TPS it runs great.