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Old 03-09-2002, 11:39 AM
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Join Date: Nov 2001
Posts: 12
heater probs. 560sec

I have a 560 SEC -88 , here in sweden its about -10 celcius and when the engine temp rise the fan start and it start to blow warm air but after about 10 min the fan just blow cold air if i then stop the car turn the ignition off and start the car again the air is hot and nice again .....for about 5 min and then just cold.... this problem has started now... any ideas???
-88 560SEC
-77 280SE
-71 Mercury Cougar Convertible
-84 GMC Pickup
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Old 03-09-2002, 12:04 PM
Join Date: Nov 2001
Location: Cape Cod Massachusetts
Posts: 1,427
Monovalve! Monovalve! Monovalve!

Sounds like what happened when my monovalve piston diaphram failed. You can search these threads for this topic for more info. If you would like send me your e-Mail address and I will send you the procedure for finding the monovalve, inspecting, and repairing it with some helpful pictures. But its only -10 C so your probably in no hurry!!!!!

Use the PM - private message - feature in the lower left of this window to get me your e-mail address!

Last edited by Billybob; 03-09-2002 at 12:20 PM.
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