SPONSORED LINKS

1998 GMC Sierra engine runs hot

Tiny
DAVE MAYER
  • MEMBER
  • 1998 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 178,300 MILES
The engine runs hot. I ran low on coolant last week so I filled it up, now it runs hot all the time. Before, it ran half way between 100 and 210degrees. I have replaced the thermostat, water pump checked the hoses (no leaks) and replaced the temperature sending unit. I dont know what else to do. Can you help me with this problem? Thank you
SPONSORED LINKS
Saturday, February 27th, 2010 AT 7:54 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be airlock try bleeding it out-
Was this
answer
helpful?
Yes
No
Saturday, February 27th, 2010 AT 9:27 PM
Tiny
DAVE MAYER
  • MEMBER
  • 2 POSTS
I have tried that too. I replaced the new thermostat and put the old one back in. It seems to run a little cooler, but it stills stays at around 210 deg. I visually inspected the radiator and found it to be in good shape. Just a side note, I drive about 100 miles per day and would really hate to break down in the boonies. I appreciate your help and anything else you can think of. Thank you again. Nailbender98
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, February 28th, 2010 AT 4:55 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a boil over situation? If not-could be just the coolant temperature sensor out of calibration or the gauge itself-now if in fact there's boilover get it block and pressure tested.-Rad cap is it in good shape?
Was this
answer
helpful?
Yes
No
Sunday, February 28th, 2010 AT 5:02 PM

Please login or register to post a reply.

Related Engine Runs Hot Content

VIEW MORE

Sponsored links