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-   -   High Idle problem (http://www.jeepforum.com/forum/f12/high-idle-problem-1526670/)

demonz0 05-22-2013 02:11 AM

High Idle problem
 
I recently did my exhaust system and since then I have a high idle. Runs around 1400 RPM at all times now when it ran at 700rpm idle before. The air box did come out to access the manifold flange.

Before than I also hydro locked my jeep but had fixed it.

billybooster2 05-22-2013 02:31 AM

sounds like vacuum leak somewhere...broken / cracked hose somewhere?

102joe 05-22-2013 07:17 AM

A bad T. P. S. will do that too , some time you can pull it off and clean it , and it will clear up . Although it is pretty likely you disturbed a vacuum line while working on the exhaust , like Billy said . you can spray carb cleaner around the lines to try and fide it .

Que89YJ 05-22-2013 07:17 AM

x2 with Billy vacuum leak. Use carb cleaner and spray around listening for any idle change.

demonz0 06-02-2013 04:28 AM

Haven't gotten around to looking but have noticed a few other things about it. It starts really rough and as the temperature of the engine goes up so does the idle. Change your opinions or not?

Also I just spray the carb cleaner along the lines and connections?

102joe 06-02-2013 08:03 AM

Vacuum leak , engine will run warmer with high idle . Spray carb cleaner around the suspicious hoses or any where air could be sneaking into the intake . When the cab cleaner goes in inted of air the engine will rev up .

Que89YJ 06-02-2013 08:53 AM

spray every place you have a vacuum line. the pvc hose, manifold, and brake booster especially.

Que89YJ 06-02-2013 08:54 AM

I bet your manifold since you just did the exhaust.

tchoberg 06-02-2013 11:52 AM

The problem will be no doubt be related to something you did when changing the manifold. ( the `whatever u touched last rule`). Vacuum leak is the prime suspect as was pointed out earlier, so get the carb cleaner and find it the easy way. By the way, an UNLIT propane torch works also.


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