My 1991 BMW 745i runs hot what can it be thats causing the problem?
- Thread starter Steven T
- Start date
do a pressure check on the cooling system to see if it has a leak , , you can do a compression test too to see which cylinder might be leaking, if it is not leaking anywhere and the thermostat is new the sending unit/ sensor for the temp guage may be bad ? check the fans to make sure they are coming on too, otherwise get a bottle of ( koolit) it will lower your operating temp 20 degrees
Old 7 series BMW's are notorious for their upkeep prices. The first thing I would do is an oil change, switch to a good fully synthetic oil such as Amisol or Redline, there are many others. You want a good oil because it will help cool your engine as it circulates through. The next thing I would do is a coolant change, this will also keep your car from rusting. Do a 50-50 mix of coolant and distilled water. ideally, this should be done every 2 years at the most. I am posting the link to a website below. It has various service recalls for your vehicle, these are know problems the dealer should cover, but maybe not 16 years later. However, if what I suggested does not work your problem may be here since cooling issues seem to be listed a couple of times.
http://www.automobilemag.com/am/1991/bmw/7_series/recalls.html
http://www.automobilemag.com/am/1991/bmw/7_series/recalls.html
Arthurlikesbeer
New Member
flush the radiator with a cleaner,,it my be clogged with sediment,witch would keep it from cooling
N
Nokia_N95
Guest
listen bro, go to a mechanic. only he can help you professionally. peace!!