# 2000 Ford Mustang - High idle **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford\ **Created:** [September 14, 2019, 2:01pm UTC](https://community.cartalk.com/t/2000-ford-mustang-high-idle/148749 "2019-09-14T14:01:04Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![KeithMinter](https://avatars.discourse-cdn.com/v4/letter/k/54ee81/32.png) [@KeithMinter](https://community.cartalk.com/u/KeithMinter)\ **Post date:** [September 14, 2019, 2:01pm UTC](https://community.cartalk.com/t/2000-ford-mustang-high-idle/148749/1 "2019-09-14T14:01:04Z")
2000 Mustang GT with a 5 speed transmission. While driving, the car starts idling at 2500 rpms for no reason. Sometimes I turn the engine off and start it again and the problem goes away. Sometimes I ignore it and keep driving and it goes away. I have replaced some cracked vacuum hoses and the PCV valve and reduced the frequency of the problem. No check engine light ever comes on and I can’t troubleshoot the problem because it goes away before I can get home and check it out. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [September 14, 2019, 4:22pm UTC](https://community.cartalk.com/t/2000-ford-mustang-high-idle/148749/2 "2019-09-14T16:22:32Z")
Likely a binding throttle cable or a dirty throttle body or a bad idle air control valve. The the list is free to check, cheap to clean and inexpensive to replace in that order. Very likely that none of them will set a code. Post back with what you find. If it isn’t one of the 3 (most likely the IAC valve), I’d be surprised.