# RPM Issues

**URL:** <https://community.cartalk.com/t/rpm-issues/13945>\
**Category:** Maintenance/Repairs\
**Tags:** rpm, transmissions\
**Created:** [May 12, 2008, 9:37pm UTC](https://community.cartalk.com/t/rpm-issues/13945 "2008-05-12T21:37:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![iskoko](https://avatars.discourse-cdn.com/v4/letter/i/c2a13f/32.png) [@iskoko](https://community.cartalk.com/u/iskoko)\
**Post date:** [May 12, 2008, 9:37pm UTC](https://community.cartalk.com/t/rpm-issues/13945/1 "2008-05-12T21:37:17Z")

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I have a '99 Chrylser Cirrus that has been randomly increasing and decreasing RPM (but stays at the same speed) intermitedly while I’m driving. Dignostic test found nothing wrong. Any ideas?

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [May 12, 2008, 10:31pm UTC](https://community.cartalk.com/t/rpm-issues/13945/2 "2008-05-12T22:31:40Z")

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Yup. The diagnostic test checked the engine, which was running fine. What’s probably going on is that the engine is not solidly connected to the drivetrain. This is a job for a tranny shop.