B2Bobby
New member
- Joined
- Nov 12, 2020
- Messages
- 6
- Reaction score
- 0
- Points
- 1
- Vehicle Year
- 1989
- Vehicle
- Ford Bronco II
My local transmission shop serviced the tranny and adjusted the modulator. But they could not identify the problem because when they test drove the tranny/engine was warm. Was advised it may be a vacuum leak. Driving at 25 mph with tranny/engine stone cold engine rpm reaches 3000-3500 with no shifting. Transmission manually shifts fine. Once engine/tranny reaches normal operating temperature transmission shifts smoothly. These symptoms do not convince me it is a vacuum leak.
No fault codes are present. Engine Coolant Temp Sensor?????
No fault codes are present. Engine Coolant Temp Sensor?????