CHANGED THE RAD AND NOW IT BLOWS COLD AIR ? ?

  • Tiny
  • chrisw
  • 2000 Chrysler Neon
  • 188,000 miles

I thought it might be an air lock so I took the rad cap off and ran the car with it on loose the rad warms up the rad fan comes on and off like normal but the heater hoses are cold I am stuck now I think it might be the water pump?

Monday, October 3rd, 2011 AT 2:08 AM

7 Answers

  • Tiny
  • cadieman
  • Member

What are you trying to do
?

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Monday, October 3rd, 2011 AT 2:16 AM
  • Tiny
  • chrisw
  • Member

Help

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Monday, October 3rd, 2011 AT 2:16 AM
  • Tiny
  • cadieman
  • Member

Check the heater control valve on the hoses. See if it open when you push the heat control to hot.

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Monday, October 3rd, 2011 AT 2:28 AM
  • Tiny
  • chrisw
  • Member

How do I do that it is in the dash and I cant see it sounds like it is working

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Monday, October 3rd, 2011 AT 2:35 AM
  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

Is the radiator also heating up with the engine? You should be able to see water flowing under the radiator fill neck if the pump is operating and/or the thermostat is opening properly. Did you change the thermostat when you did the radiator? It's usually recommended that you do.

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Monday, October 3rd, 2011 AT 3:48 AM
  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

Oh, one more thing. Sometimes new radiators come with plugs inside the openings to keep contaminants out during storage.

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Monday, October 3rd, 2011 AT 3:56 AM
  • Tiny
  • cadieman
  • Member

The heater control valve is under the hood on the heater hoses. Its a round valve with a vacuum hose on it. Did you replace the radiator to fix the heater?

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Monday, October 3rd, 2011 AT 5:19 PM

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