Overheating

Tiny
JERRYWINSTON336
  • MEMBER
  • 2003 PONTIAC GRAND AM
  • 3.4L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 14,400 MILES
My car started overheating I replaced the radiator water pump thermostat coolant level sensor coolant temperature sensor serpentine belt the car is still overheAting I checked the fans they are operating properly it just keeps overheating I also checked the engine oil to see if it looked normal and it does I looked at that to see if it could be a blown head gasket problem oil looked normal
Tuesday, April 4th, 2017 AT 7:05 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Pressure check cooling system for an internal leak like a head gasket. Then when hot check radiator with engine off and fans unable to start for cold spots if any the rad is bad
Was this
answer
helpful?
Yes
No
Wednesday, April 5th, 2017 AT 7:11 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
Looks like you replaced all the external parts. Run a pressure test as well as a combustion gas test. It sounds like you have a failing head gasket that is causing the overheating.
Another possibility would be a partially plugged exhaust holding heat in the engine, for that a simple back pressure test of the exhaust would rule that out.
Was this
answer
helpful?
Yes
No
Sunday, April 9th, 2017 AT 1:48 PM

Please login or register to post a reply.

Related Engine Overheat Content

Is Your Engine Cool Enough to Check?
VIDEO
Is Your Engine Cool Enough to Check?
Instructional repair video
Overheating Symptoms
GUIDE
Overheating Symptoms
An overheating engine is never a good thing to have happen. If the problem is caught quickly you can save the headache of a major engine repair. Knowing the information from...
VIEW MORE