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Topic: Heater Trouble

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smorkle
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Posted: Nov 09 2011 at 8:31pm \| IP Logged

Winter is fast approaching and the heat is going to be very important and I seem to have a slight bit of trouble and cant put my finger on what might be the problem.

The heat works just fine when I'm driving down the road. It'll make you want to turn it down in a hurry. The problem is, when I get to a stop light it starts blowing cold air instead of hot. As soon as I start going again it's hot again and if and when I stop it goes cold again.

Is this a tell tale sign of some sort of problem or is it something that is relatively minor?

Thanks. ÷)

lakota
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Posted: Nov 09 2011 at 10:27pm \| IP Logged

I could only guess... It might be coolant level, a voltage problem or a vacuum problem. Please state model, year, engine and so-forth.

Check the coolant level for starters...

Good Luck.. Don S..

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smorkle
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Posted: Nov 10 2011 at 4:38pm \| IP Logged

Sorry, I have a 2007 Frontier with the V6 engine.

I will, however, check the coolant. Thanks.

frontierguy
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Posted: Nov 11 2011 at 6:34pm \| IP Logged

Check the coolant over flow tank for any oil(trans fluid),
the rad cooler may have failed allowing coolant into the
trans and vice/versa.

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Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.

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2011 John Deere X720SE

smorkle
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Posted: Nov 12 2011 at 7:37am \| IP Logged

I checked it yesterday and the overflow reservoir had fluid in it but the radiator itself was about 1½ quarts low. I added straight antifreeze to it rather than 50/50. I need to flush and fill the thing soon because it hasn't been done before.

Thanks for the point in the right direction.

frontierguy
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Posted: Nov 14 2011 at 8:01pm \| IP Logged

Might be a good idea to find out where the coolant went.

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Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.

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2011 John Deere X720SE

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