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Old 01-08-2005, 12:26 PM
Join Date: Jan 2005
Location: CA
Posts: 1
1979 Heater/Airconditioning

My 1979 300D has 233,00 miles. Slow commuter car for 70 plus miles a day R/T.Great on the flats. No heater or A/C. Can live without A/C in summer even though work area is 90-100 degrees. But I'm freezing in winter and can't defrost inside. The blower fans work. To just get the heater to work without putting more than $300.00 into it, anyone have any idea what to check first? I'll get my husband right on it if any suggestion. He changed out all my glow plugs without a problem.

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Old 01-08-2005, 12:41 PM
Kyle Blackmore's Avatar
Mostly Harmless
Join Date: Sep 2001
Location: almost beyond Hope...B.C.
Posts: 979
Hi Pismo300D , try doing a search on ACC servo or ACC amp. It's a complicated system to diagnose with vacuum controls and resistance values that need to be tested. Try this link for a starting point.
Good luck

Democracy dies in darkness, you have to kick at the darkness till it bleeds daylight

Last edited by Kyle Blackmore; 01-08-2005 at 12:44 PM. Reason: add a link
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