Coolant system problems gauge says overheating heater wont blow heat

Tiny
PEASE350
  • MEMBER
  • 1997 CHEVROLET SILVERADO
  • 30,000 MILES
Intermitent problem, Temp gauge barries 260 and engine doesn't feel heat can touch the engine block, replaced the thermostat and water pumped and gravity blead the air out of the system. Can start the truck up and let it warm to temp and heats awsome go a half mile down the road and the gauge barries and blows cold air, after another half mile I assume the thermostat opens and temp gauge reads normal and heat blows fine for rest of day.
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Saturday, February 25th, 2012 AT 5:34 PM

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Tiny
HMAC300
  • EXPERT
Make sure your coolant level is at right level first. Then get where the truck overheats. If you have elecetric fans disconnec them or pull the relay so they won't start. Then touch all around radiator and feel for cold spots or loose fins. If you feel any cold spots, the rad is bad an dneeds replacing or recoring. It should be the same temp all over rad.
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Saturday, February 25th, 2012 AT 6:36 PM

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