2002 Buick 3

Tiny
JEFFREYHERBST
  • MEMBER
  • 2002 BUICK RENDEZVOUS
  • 120,000 MILES
2002 Buick 3.4ltr overheating. This is what I have already replaced or done: radiator cap, checked all hoses for clogs, checked water pump. Replaced Serpentine belt, replaced belt tensioner, and replaced thermostat. There is no coolant on the floor. When it over heats it fills the overflow container. Please advise what I can all do or check next. Thank you
Saturday, April 6th, 2013 AT 2:29 AM

3 Replies

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
Get a pressure test done and see if there is a pressure loss from a small leak. You can overheat if the system does not have proper pressure.
Was this
answer
helpful?
Yes
No
Saturday, April 6th, 2013 AT 2:34 AM
Tiny
JEFFREYHERBST
  • MEMBER
  • 2 POSTS
What could it be if there is pressure loss and what could it be if no pressure loss
Was this
answer
helpful?
Yes
No
Saturday, April 6th, 2013 AT 2:38 AM
Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
If there is pressure loss then there is a crack in the cooling jacket or the head gasket could be bad. If you have changed your anti-freeze every 2 years a crack is unlikely.
If there is no pressure loss, I would make sure the fans are coming on when they are supposed to. You can get an infra red temp gauge for $20 and point it at the thermost housing and hoses etc. And your fan should come on a little above the temp that the thermostat opens.
Was this
answer
helpful?
Yes
No
Saturday, April 6th, 2013 AT 6:04 PM

Please login or register to post a reply.

Related Serpentine Belt Tensioner Replace/Remove Content

Serpentine Belt Tensioner Replacement
GUIDE
Serpentine Belt Tensioner Replacement
There are many configurations of serpentine belt tensioners, but all follow the same principle which is to keep constant pressure or tension on the engine's serpentine belt...
VIEW MORE