2003 Chevy Monte Carlo Heat is blowing cold

2003 CHEVROLET MONTE CARLO
89,000 MILES • 6 CYL • FWD • AUTOMATIC
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LMA041862
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  • 3 POSTS
I live in Chicago and when I tunr the car heat on it blows cold air. When I drive on the freeway, after a few minutes it will eventually warm up, but driving on the streets, it doesn't seem to warm up.
Jan 9, 2010 at 11:05 AM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Hi, thanks for the donation. Does the engine reach normal operating temp? Do you use a block heater? If you can feel of the heater hoses, do they get hot? Maybe the heater core needs to be flushed.
Jan 9, 2010 at 12:03 PM
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LMA041862
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  • 3 POSTS
The engine is reaching normal temp. It happened again yesterday. As soon as I drove no more than 10 minutes at 55 or over it started blowing hot air. As soon as I was off the highway, it started blowing cold air.
Jan 16, 2010 at 3:17 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Sorry for the late come-back, I've been having e-mail issues. I didn't find your post till this morning. I'd have to check coolant flow through the heater core.
Jan 19, 2010 at 9:47 AM
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LMA041862
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  • 3 POSTS
Friday evening I was driving and the engine temp
reached 260 degrees. It ended up being that I was leaking antifreeeze from the intake manifold gasket. It is now repaired, and I have heat again.
Jan 24, 2010 at 9:21 AM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Glad to hear you got it fixed.
Jan 24, 2010 at 11:13 AM
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