Why 2001 Dodge Ram 250 runs <30mph when cold
2001 Dodge Ram 2500 4x4 diesel has intermittent problem. It starts okay,but will only go
o-30 mph. Usually ~15. It doesn't run rough,just no power.
At times it seems okay,the after stopping at signal light,the problem shows up.
Most times it is worse in cold weather.
I've had a computer test run, and they said the motor is fine.