1994 Chevy Silverado overheating in the cold weather

Tiny
MIKEY9660
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 157,000 MILES
Why is my engine over heating and not blowing heat I just got a new radiator and it has new coolent and all that what should I do?
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Tuesday, December 8th, 2009 AT 1:03 AM

5 Replies

Tiny
BUDDYCRAIGG
  • EXPERT
It's not blowing hot air because it's low on coolant or it's over heating.

It's over heating because there is still a problem with the coolant system or it's low on fluid.
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Tuesday, December 8th, 2009 AT 1:49 AM
Tiny
MIKEY9660
  • MEMBER
The coolant is full and could the thermostat be bad I was looking on some other sites and they said that your suspost to change it anytime you change your radiator
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Tuesday, December 8th, 2009 AT 1:55 AM
Tiny
BUDDYCRAIGG
  • EXPERT
Yes the thermostat could be bad.

And there is no rule as to when you should change it.
They fail at random.
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Tuesday, December 8th, 2009 AT 2:02 AM
Tiny
MIKEY9660
  • MEMBER
Would that cause it to the engine to overheat and not blow heat?
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Tuesday, December 8th, 2009 AT 2:04 AM
Tiny
BUDDYCRAIGG
  • EXPERT
Yes.

If the engine over heats and the coolant starts to boil.
The liquid coolant becomes steam.
Steam going into the heater core in the dash cannot transfer heat the way liquid can.

So you would not get any heat out of the vents.

BUT.

You would have the same problem with a coolant system that is low, or not filled correctly.
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Tuesday, December 8th, 2009 AT 3:20 AM

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