Heat comes and goes

Tiny
LONELYREDNECK85
  • MEMBER
  • 2002 PONTIAC MONTANA
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Flushed heater core then had heat for one day and now overheats.
Wednesday, January 3rd, 2018 AT 5:29 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Yes, it sounds like you have a blown head gasket which fills the heater core with exhaust gases causing the heater to stop working.

Here is a guide to help you confirm the issue:

https://www.2carpros.com/articles/head-gasket-blown-test

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, January 4th, 2018 AT 3:06 PM

Please login or register to post a reply.

Related Heater Heater Core Content

Heater Core Replacement
GUIDE
Heater Core Replacement
A heater core is positioned inside the car and is part of the HVAC system. Hot engine coolant is run through the core which air is blown through via the blower motor which ...
VIEW MORE

Sponsored links