Thermostat [Archive] - Bimmerfest - BMW Forums

: Thermostat

07-15-2009, 11:03 AM
My 1981 E21 began to overheat while on a trip.
I noticed the hose below the thermostat was cold which, as I recall indicated a stuck thermostat
In an emergency step I bypassed the thermostat (by basically jamming it open)
Car ran fine after
Replaced thermostat with 80 degree and it is running hot again
Did I miss something here ?

07-15-2009, 12:55 PM
Solved problem-air in system:)

07-18-2009, 04:21 PM
Please install a 71 degree thermostat. It's the only way!!!!:rofl:

07-18-2009, 06:17 PM
Solved problem-air in system . That is a not so nice "thang"... but easily fixed. Good job.