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  #1  
Old 10-17-2006, 10:04 PM
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Join Date: Oct 2006
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Plenty of heat at low speeds, 'luke warm' at best on the highway

My problem is as it says in the title. Heat at low speeds, no real heat at high speeds.

Now, last week I took out the auxiliary fan (which sits in front of the AC condensor and radiator) cause it was busted, and there is nothing there right now. Could the air at 60mph be cooling the radiator too well?

Thoughts?
Patrick

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  #2  
Old 10-17-2006, 10:17 PM
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When my '84 300D did this it was the monovalve. Easy to fix. Do a search, plenty of info on this. RT
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  #3  
Old 10-17-2006, 10:25 PM
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Join Date: Mar 2006
Location: Louisville, KY
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mine does this to, def the mono valve, just been to busy to rebuilt it. when my heat cools off, i turn the car off and to the start position a couple times, until the heat starts blowing really hot then it is usually fine. until next time it cools down. ive learned to live with it for now

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