2004 BMW 325i Cooling system

2004 BMW 325I
157 MILES • V6 • 2WD • AUTOMATIC
Avatar
LAKISHARILEY
  • MEMBER
  • 1 POST
I have replaced radiator,thermastat,holes,fan clutch,expansion tank,spart plugs,and head gaskets in the temperature gage still moving up in down want to run hot,what could be the problem?
Oct 12, 2015 at 2:31 PM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
If the temp gauge is moving around, that means there is air in the system. You have to make sure you get all the air out when you fill it in the first place. We use a vacuum fill tool. If air is getting in after, then you either have a leak or you are getting combustion gases in there somehow, possibly still an issue with the head or head gasket.
Oct 12, 2015 at 4:28 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.