- Joined
- Oct 22, 2014
- Messages
- 181
- Reaction score
- 16
- Points
- 18
- Location
- Albuquerque NM
- Vehicle Year
- 1989
- Make / Model
- Ranger
- Engine Size
- 2.9 L
- Transmission
- Manual
My sons Ranger started running rich after the engine warms up. It runs great when cold. When it is hot it runs rough and often dies when you come to a stop. The fuel mileage dropped to about 8-10 MPG. I changed out the temp sensor and the connector. many of the other sensors I have swapped with my 89 and there was no change.
The only thing that seemed to make a difference was putting the ECM from my 89 into it. It still doesn't run perfect but it is much better and doesn't die at stops. The idle seems to be closer to what it should be and more stable.
The only change running the 88 ECM in my 89 is the idle moved up to around 1000-1100 RPM.
How much difference is there between these two computers?
Both trucks are 4x4, 5 speed , 2.9 engines.
Thanks
The only thing that seemed to make a difference was putting the ECM from my 89 into it. It still doesn't run perfect but it is much better and doesn't die at stops. The idle seems to be closer to what it should be and more stable.
The only change running the 88 ECM in my 89 is the idle moved up to around 1000-1100 RPM.
How much difference is there between these two computers?
Both trucks are 4x4, 5 speed , 2.9 engines.
Thanks