# 1999 Dodge Durango RPM problem **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** rpm, transmissions, durango\ **Created:** [October 23, 2007, 1:29pm UTC](https://community.cartalk.com/t/1999-dodge-durango-rpm-problem/6322 "2007-10-23T13:29:05Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![dana0405](https://avatars.discourse-cdn.com/v4/letter/d/dec6dc/32.png) [@dana0405](https://community.cartalk.com/u/dana0405)\ **Post date:** [October 23, 2007, 1:29pm UTC](https://community.cartalk.com/t/1999-dodge-durango-rpm-problem/6322/1 "2007-10-23T13:29:05Z")
I own a 99 Durango with 87K miles 5.2L, V8 4x4. My problem is with my RPM gauge. After the car has warmed up and I?m on the freeway (going about 65-75 mph) the RPM gauge starts to spike. Normal driving RPM?s is approx. 2000 RPM?s and it spikes to about 2500 RPM?s and returns to normal driving RPM?s. The other thing I noticed was that it only occurs on moderately bumpy roads (which are most roads); however on newly paved surfaces it doesn?t happen at all or is barley noticeable. When the spike occurs you can hear the engine rev. Initially I thought it might be transmission/differential issue, but after asking around people are telling me that it?s not. I haven?t had any issues with the transmission in the past. Dan St. Louis, MO ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [October 23, 2007, 1:49pm UTC](https://community.cartalk.com/t/1999-dodge-durango-rpm-problem/6322/2 "2007-10-23T13:49:03Z")
Since it looks like the tach is really following the engine RPMs the problem may be with a dirty throttle position sensor. You may be able to clean the contacts of the sensor. If not then you may have to replace it. By placing a voltmeter across the sensor output and monitoring the voltage you can see if the problem really is coming from there. ---
**Author:** ![dana0405](https://avatars.discourse-cdn.com/v4/letter/d/dec6dc/32.png) [@dana0405](https://community.cartalk.com/u/dana0405)\ **Post date:** [October 23, 2007, 3:27pm UTC](https://community.cartalk.com/t/1999-dodge-durango-rpm-problem/6322/3 "2007-10-23T15:27:09Z")
I check it out and let you know. Thanks for the reply. ---
**Author:** ![dana0405](https://avatars.discourse-cdn.com/v4/letter/d/dec6dc/32.png) [@dana0405](https://community.cartalk.com/u/dana0405)\ **Post date:** [November 3, 2007, 6:41pm UTC](https://community.cartalk.com/t/1999-dodge-durango-rpm-problem/6322/4 "2007-11-03T18:41:50Z")
That fixed the problem Cougar. Thanks for the info. It was greatly appreciated.