Jeep Wrangler Forum banner
  • Hey everyone! Enter your ride HERE to be a part of JUNE's Ride of the Month Challenge!

1 - 4 of 4 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
I have a 97 TJ 2.5 every time I start it hot or cold it rev's to 1800 for a minute or so then slows down to tick over What would cause this. Thanks Rob.
 

·
Registered
Joined
·
1,777 Posts
Possible vacuum leak? Any whistling or hissing sounds near the intake?
 

·
Knows a couple things...
Joined
·
49,417 Posts
Guessing vacuum leak or a dirty IAC (idle air controller). A dirty IAC can be fixed by spraying at least 1/3 of a can of throttle body cleaner into the throttle body while the engine is idling. The engine will die when you get enough cleaner into the IAC but just restart it and spray some more. Raising the rpms will cause the cleaner to bypass the IAC. The IAC is what provides all of the engine's air when you're not stepping on the gas pedal. If the IAC is dirty it can stick and provide either too much or too little air causing too high or too low rpms.
 
1 - 4 of 4 Posts
Top