Mazda
B2600
4

Transmission Shifts In and Out of Overdrive on Mazda B2600

Problem Description and Possible Solution

If the automatic transmission shifts in and out of overdrive while cruising, it may be from a coolant thermostat that is stuck open. The engine must reach full operating temperature for the overdrive to engage properly. If possible, check to see the engine is running at full operating temperature while cruising.

Problem Data
RepairPal Verified
Average mileage: (–)
4 model years affected: 1990, 1991, 1992, 1993
4 people reported this problem