SPONSORED LINKS

Car overheats

Tiny
QUINT45
  • MEMBER
  • 2000 CADILLAC DEVILLE DTS
  • 4.6L
  • V8
  • FWD
  • AUTOMATIC
  • 129,000 MILES
I replace the water pump, radiator, thermostat, coolant tank with sensor and radiator holes. At times its running ok, then the gauge would go hot real fast then calm back down, sometime when I hit a bump in the road it triggers something and it goes hot again. But calms back down. I can feel the water boiling hot through the top radiator holes. Then at times everything is flowing nice. I check the holes as well and everything checked out ok, coolant is flowing. Help please?
SPONSORED LINKS
Tuesday, March 28th, 2017 AT 6:53 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Pressure check and chemical check for a head gasket leak that may be the problem. Then check ground wires on engine to battery and battery to body as you may have a loose one.
Was this
answer
helpful?
Yes
No
Wednesday, March 29th, 2017 AT 7:17 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
The lovely Northstar engine. As HMAC says, test it for bad head gaskets. They are sadly know for having the head gaskets fail because the bolts holding the heads on pull loose from the block. That can be repaired.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, March 31st, 2017 AT 3:16 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

Sponsored links