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-   -   vacuam or electrical heater fan control problems (http://www.peachparts.com/shopforum/showthread.php?t=147225)

sleepydan 03-05-2006 07:38 PM

vacuam or electrical heater fan control problems
 
I recently installed a motor in a 1988 190 E ...3.2 engine used all my sensors intake and exhaust manifolds it runs good ...BUT... when you turn heater fan on med rpms change gets higher then when I turn on high really changes rpm it jumps up and lights get real bright ...have checked all grounds they are tight ...when I turn on heater to the medium and high position I can a slight noise like a vent opening under vacuam ....any body have any suggestions?

orthotomeo 03-06-2006 07:30 PM

Is your A/C on?
 
Do you have the A/C button/ switch set to the on position?


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