# Jeep jk with hemi 7.2l manual

**URL:** <https://community.cartalk.com/t/jeep-jk-with-hemi-7-2l-manual/90231>\
**Category:** Maintenance/Repairs\
**Created:** [June 10, 2015, 6:34pm UTC](https://community.cartalk.com/t/jeep-jk-with-hemi-7-2l-manual/90231 "2015-06-10T18:34:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![busalem](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/busalem/32/2945_2.png) [@busalem](https://community.cartalk.com/u/busalem)\
**Post date:** [June 10, 2015, 6:34pm UTC](https://community.cartalk.com/t/jeep-jk-with-hemi-7-2l-manual/90231/1 "2015-06-10T18:34:11Z")

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I already published a question here earlier, with the symptoms of high rpm when stopping before complete stop. And high room when shifting from one gear to another(usually bit drops between shifts).  
Recently I noticed that this happens only when shifting above 2500 rpm. So if the shifting happens before the rpm reaching 2500 it will be smooth and normal.

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**Author:** ![missileman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/missileman/32/1366_2.png) [@missileman](https://community.cartalk.com/u/missileman)\
**Post date:** [June 10, 2015, 9:48pm UTC](https://community.cartalk.com/t/jeep-jk-with-hemi-7-2l-manual/90231/2 "2015-06-10T21:48:45Z")

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Replace the IAC valve. Cleaning will sometimes help but replacement is the best option.

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [June 10, 2015, 10:19pm UTC](https://community.cartalk.com/t/jeep-jk-with-hemi-7-2l-manual/90231/3 "2015-06-10T22:19:08Z")

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Is this engine carburetored or fuel injected and if it has a carb are the secondaries vacuum operated or manual. If it has a carb it sounds like the secondaries are not closing fast enough. Matbe a dashpot adjustment if it has one.