# Jeep Grand Cherokee **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** grand-cherokee, jeep\ **Created:** [July 1, 2012, 10:39pm UTC](https://community.cartalk.com/t/jeep-grand-cherokee/73339 "2012-07-01T22:39:11Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ash23](https://avatars.discourse-cdn.com/v4/letter/a/c68b51/32.png) [@ash23](https://community.cartalk.com/u/ash23)\ **Post date:** [July 1, 2012, 10:39pm UTC](https://community.cartalk.com/t/jeep-grand-cherokee/73339/1 "2012-07-01T22:39:11Z")
I have a 2007 Jeep Grand Cherokee that I absolutly love, but lately a I’ve been noticing a problem with it gradually getting worse. When I am on my way to work in the morning, and I get on the on ramp to the highway, as I start to accelerate the back end of the car starts to make a rumbling noise. When I look at my gauges the rpm’s are going up and down kind of like it doesn’t want to shift. The only other time I notice this is when I try to climb a hill on the road or highway. There is no check engine light on. I have had this problem for quite sometime, but just recently noticed it because it has gotten worse. My husband has had a few mechanics drive it, and has asked a few others about it. They either don’t know or have a very wide range of things it could be. My friend I work with had a Pontiac Grand Prix. She said that her catalitic converter plugged up and caused her transmission to go out. Thank you ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [July 1, 2012, 11:20pm UTC](https://community.cartalk.com/t/jeep-grand-cherokee/73339/2 "2012-07-01T23:20:12Z")
At what speed does this occur? Will the Jeep accelerate OK on level ground? Does the yellow ENGINE light ever blink on when you are driving? ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [July 2, 2012, 2:29am UTC](https://community.cartalk.com/t/jeep-grand-cherokee/73339/3 "2012-07-02T02:29:40Z")
Are you in 4wd, try 2wd if so.