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Cooler air blowing into vehicle

Temperature gage goes all the way up to hot and cooler air blowing into vehicle

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  • Cars & Trucks Master
  • 5,332 Answers

Year, make, model, and engine size? Is the coolant level full?

Posted on Dec 30, 2012

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Posted on Jan 02, 2017

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  • 69 Answers

SOURCE: TEmperature gage goes up and

Sounds like a bad thermostat. Its either stuck open or stuck closed. Get it replaced ASAP before you do damage to the engine.

Posted on Aug 17, 2008

  • 2 Answers

SOURCE: heater problem 2005 grand caravan

check the coolant level, I had the same problem low coolant level.....no hot water to the the heater coil.

Posted on Jan 03, 2009

harley9701ha
  • 424 Answers

SOURCE: Temperature Control not working on 1999 Ford Explorer

Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Posted on Jan 26, 2009

  • 25 Answers

SOURCE: location coolant temperature sensor 4.2 liter envoy ?

COOLANT TEMP SENSOR IS MOST LIKELY BAD. NEED TO CONNECT TO THE OBD CONNECTOR WITH A COMPUTER AND SEE WHAT TEMP THE COMPUTER IS SEEING.

Posted on Mar 22, 2009

  • 5 Answers

SOURCE: 04 Jag S type middle air vents cool, sides hot. Recirc hot.

here is what you do. look on the passenger side front near the bottom of the radiator. there you will see the dccv or dual coolant control vavle. it will have your two heater hoses running to it and another hose from the radiator under it . once you have identified it , feel and look around it for any signs of leaking. barring any leaks, disconnect the connector, turn the ac/engine on and usining a tester , test for voltage on each of the three wires.if both outer wires have no current ( the middle wire yellow- will have current) then your problem is the control panel. if the control panel is not a navigation it is possible to easily repair it. replacing it can run from 600.00 to 1500.00 depending on who you goe to. oh by the way its still some data that you aint looked at. holla back if you need more help or a repair of the a/c control panel.

Posted on May 07, 2009

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I have a 2004 Pontiac Sunfire. When the car is in idle the air blows out hot and the Temperature gage rises and the car over heats. When the car is moving the air blows out ice cold and the temperature...


Sounds like your cooling fans on the radiator are not working. The fans are activated by a thermol switch on the engine or radiator reading the coolant temperature and an A/C switch. When the coolant is too hot the fans should activate cooling the system down. And, when the A/C is on the fans should also activate in order to cool the condensate so the A/C would work.

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I would check the radiator fan fuse or fuses first. If those are OK I would try to run the fans with 12 volts and a ground that I supply just to see if the fan motor(s) actually run when powered. If the fan don't run when powered then the fans are bad and will need to be replaced. If the fans do run when you power them manually, then something is not allowing the power to activate, like a relay, control unit, or wiring.

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check the coolant level, I had the same problem low coolant level.....no hot water to the the heater coil.

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