Question about 1995 Chevrolet Beretta

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My heater blows cold air and my temperature rises to almost overheating. if you rev up motor temperature drops and heater blows warm air. What is problem.

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  • Chevrolet Master
  • 5,370 Answers

To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.------
Engine Overheats and heater blowing cold?http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------Heat blows cold on drivers side and hot on passenger side?http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
-----------
This will help.Thanks.

Posted on Feb 18, 2012

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I flushed my heater core and it worked that day ....then it blew cold th' next day and what is that little thing in th' heater hose? some kinda valve i think its stopped up there . can i take it out?

Posted on Jan 18, 2014

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  • 2 Answers

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Posted on Jan 02, 2017

  • 295 Answers

SOURCE: slightly overheating while at idle and heater on low or off.

The thermostat is starting to stick .
Replace the thermostat.

Posted on Apr 18, 2009

hankfan18436
  • 62 Answers

SOURCE: 2000 Chevy Silverado 4X4 - Heater isn't blowing hot air

No your thermostat is stuck open which will not hurt the engine. but needs to be replaced, the thermostat is what allows the engine get up to operating temp. before allowing water to flow through the radiator and when it is stuck open it doesnt allow the engine to reach operating temp. so the heater never gets hot. I hope that helps you out.

Posted on Nov 24, 2008

  • 3 Answers

SOURCE: blowing cold air

I had the same problem that I just fix by flushing the heater core out with a hose.   take the two hoses off the fire wall and put the water to it and let flush.  my heater is putting out 150 dg. F  of hot air.   I'm so excited!  i will stay warm now.

Posted on Feb 27, 2009

  • 106 Answers

SOURCE: The heater blows cold when

It's possible you have a bad vaccum line to the actuator door in the heater assembly
or possibly a stuck thermostat

Posted on Oct 10, 2009

dvs9mm1971
  • 114 Answers

SOURCE: Temperature gauge fluctuates and the heater blows cold air

Sounds like the thermostat needs to be replaced. If you do the work yourself be sure the temp threshold is correct and the flow direction is correct when installed. Good luck to you

Posted on Oct 16, 2009

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