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Old 05-30-2004, 12:08 AM
JamesStein's Avatar
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Join Date: Apr 2004
Location: Tallahassee, FL
Posts: 586
ACC ocassionally blasts heat for about 3 minutes

My wifes 300D is exhibiting some strange behavior. Ocassionally when you first start it up, the ACC blasts heat for about 2 or 3 minutes, then it starts to get cold.

I discovered that the left and right hoses on the firewall (not sure what they are called.. I want to call them pinchoff hoses, since they come out of the fire wall and just pinch off and aren't actually sealed closed) were cracked and falling apart, so I replced those thinking that they might be vents to allow air out of the cab.. that were sucking heat from the engine compartment in. Could this be an actual problem with the ACC unit itself or something else?

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'84 300CD Turbo 132k (Anthracite Grey) - WVO - My daily driver - Recently named coo-coo-coupe by my daughter.
'84 300D Turbo 240k (Anthracite Grey) - Garage Queen
'83 300D Turbo 220k (Orient Red) - WVO - Wifes daily driver

I'm not a certified mechanic, but I did stay at a HolidayInn Express last night.
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