View Full Version : Car shakes when fan is turned on?

06-12-2008, 02:51 PM
My '99 Mazda 6 violently shakes when I turn the fan on, I can see the RPM jumping. This shaking will stop after a couple of seconds and the car will be calm. Also, after installing my new head unit, I've noticed a more "noticable" vibration/hum in the car that I think is related to the shaking. Any ideas on whats going on here? I'm thinking about replacing the PCV valve, cleaning the air filter, and checking the spark plugs.

06-12-2008, 02:55 PM
It's going to explode :fyi:

Brian Owens
06-12-2008, 03:02 PM
I assume it is an electric fan? Bad fan causing stress on the elctrical system/alternator?

06-23-2008, 05:13 PM
What fan?..Cooling fan? A/c fan? If its cooling fan then it could be your fan clutch or fan module going bad...if its a/c then it could be your compressor or comp. clutch /field going bad.

06-23-2008, 05:16 PM
It's going to explode :fyi:

i agree :blowup:

JL Audio
06-23-2008, 05:19 PM
TURN THE FAN OFFFFFFFFFF. car shakes means it's cold.

:-D... wakka wakka.