# Poor acceleration , rough running and too fast idle **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** parkingbrakes, buick\ **Created:** [August 23, 2009, 3:23am UTC](https://community.cartalk.com/t/poor-acceleration-rough-running-and-too-fast-idle/35451 "2009-08-23T03:23:03Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Ed\_Wolf](https://avatars.discourse-cdn.com/v4/letter/e/3bc359/32.png) [@Ed\_Wolf](https://community.cartalk.com/u/Ed_Wolf)\ **Post date:** [August 23, 2009, 3:23am UTC](https://community.cartalk.com/t/poor-acceleration-rough-running-and-too-fast-idle/35451/1 "2009-08-23T03:23:03Z")
I have a 91 Park avenue which has been giving trouble with the engine not slowing down with the acclerator pedal not depressed at all. Plus Recently it almost stalled when stopped due to too slow idle. It had also balked when trying to acclerate from 50 mph. The mechanic said the computer had registered several “TPS” error codes. Could all these problems stem from a faulty Throttle Position Sensor? ---
**Author:** ![UncleTurbo](https://avatars.discourse-cdn.com/v4/letter/u/e9a140/32.png) [@UncleTurbo](https://community.cartalk.com/u/UncleTurbo)\ **Post date:** [August 23, 2009, 4:34am UTC](https://community.cartalk.com/t/poor-acceleration-rough-running-and-too-fast-idle/35451/2 "2009-08-23T04:34:15Z")
Yep, sure could. And, bunches of other stuff. With a 19 year old car it could be a dried out hose for a vacuum line falling off, or a major problem. It seems the mechanic is on the right track. ---
**Author:** ![pleasedodgevan2](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pleasedodgevan2](https://community.cartalk.com/u/pleasedodgevan2)\ **Post date:** [August 23, 2009, 4:36am UTC](https://community.cartalk.com/t/poor-acceleration-rough-running-and-too-fast-idle/35451/3 "2009-08-23T04:36:40Z")
Good answer. And to the question; TPS means throttle position sensor so I guess.