IIBRONCOS
Member
- Joined
- Jan 24, 2017
- Messages
- 134
- Reaction score
- 11
- Points
- 18
- Location
- AZ
- Vehicle Year
- 1988
- Make / Model
- Ford
- Engine Size
- 2.9
- Transmission
- Automatic
Just recently I noticed at start up, a not as smooth as it used to be running engine. Once in a while it will start and be smooth as it warms, and sometimes it will start up fast
but feel rocky as it warms up. Even warm if I hit the gas quickly there is a hesitation before it revs up. It drives fine warm, but cold it is not smooth. Most engine parts were replaced about 20,000 miles ago. The 2 things that were not replaced are the TPS and IAC both which are original. I did clean the IAC 20,000 miles ago. It currently has about 63,000 original miles. Any ideas where to start would be appreciated.
but feel rocky as it warms up. Even warm if I hit the gas quickly there is a hesitation before it revs up. It drives fine warm, but cold it is not smooth. Most engine parts were replaced about 20,000 miles ago. The 2 things that were not replaced are the TPS and IAC both which are original. I did clean the IAC 20,000 miles ago. It currently has about 63,000 original miles. Any ideas where to start would be appreciated.