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Old 10-02-2003, 11:19 AM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,114
Check that the aspirator blower is working. It's the little fan attached to the main blower housing that sucks air through the cabin temp sensor by the rear view mirror. Check also the temperature-resistance values of the cabin temp sensor. The values are in the archives.

If it's only slow from hot to cold then check the seals in the monovalve cartridge.

95 S420
91 300SE
87 300SDL
83 300SD
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