Close
Overheating
1991 BMW 735iL

Overheating

(1991 BMW 735iL)
Car overheats with no signs of flowing liquid in upper or lower hoses. No signs of any leaks, and I've removed the thermostatic. Still no flow.
2 answers & 0 comments
Popular Answer
Not sure if these cars have a plastic impeller on the water pump like other BMW, some Ford engines, some Jaguar and Audi/VW engines, The impeller fails and slips on the water pump shaft, car overheats and runs hot due to poor circulation. Call a local BMW specialty shop and ask them have they seen the water pumps fail on that model/year, they may say "sure we see it all the time!"
Sign in to reply
General Diagnosis
$88 - $111 Learn More
Not sure if these cars have a plastic impeller on the water pump like other BMW, some Ford engines, some Jaguar and Audi/VW engines, The impeller fails and slips on the water pump shaft, car overheats and runs hot due to poor circulation. Call a local BMW specialty shop and ask them have they seen the water pumps fail on that model/year, they may say "sure we see it all the time!"
Sign in to reply
on October 19, 2010
If there is no pressure and no circulation, it is a possible water pump problem.

Zee
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
I have noticed the coolant reservoir had been getting low on a fairly regular basis. today, i went to change my spark...
I have ran power straight to fan and confirmed it does work. i have also checked the fuses under the dash and under...