1995 BMW 525i Overheating

1995 BMW 525I
170,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
ZAPPELLA
  • MEMBER
  • 1 POST
Here's the situation...
Radiator was leaking, took the car in for a new one. Also had the valve cover replaced, as it was leaking also. The car was not overheating when I took it in, just leaking. Mechanic gave me the car back, as soon as it got up to temp, it kept going and started to overheat. I thought it could be the Cat Converter, which may have caused the leaks in the first place. Took the car back, he cleaned out the Cat, replaced the plugs and oil. Car runs great until it gets up to temp then begins to overheat again. What could this be? I'm hoping its the thermo or the water pump? What are the signs of head problems? PLEASE HELP!
Mar 9, 2010 at 8:55 AM
Advertisement
Avatar
2CARPRO JACK
  • ✓ASE Certified Mechanic
  • 11,533 POSTS
  • ASE Certified Mechanic
Overheating and coolant loss are signs of a cylinder head problem, but I would go with something cheap and easy first.Try replacing the thermostat, it sounds like it may be stuck shut.Also be sure to open the bleeder on the t-stat housing and the radiator fill tank to let the air out that is trapped in the cooling system. If that doesnt fix it, have them do a chemical test for a blown head gasket, those older BMW's had some problems with the heads cracking, but do the basics first
Mar 9, 2010 at 2:32 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.