986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Running the heater makes the whole car shake

Pat · 12-14-2011, 07:53 PM

Today when I turned the heater on, the whole car started to vibrate/shake. I turned it off, and the shaking stopped. I turned it on and off many times, and sometimes the car shook, other times it did not. Another interesting point is that when I turned it off, it seemed to take a couple seconds for the HVAC system to "spin down," and the shaking/vibrating was at it's worse during the three seconds between the LCD saying the fan is off, and actually hearing the system stop.
Has anyone else experienced this before? What could it be? Loose bolt on the compressor? Please tell me this is an easy DIY fix.

12-14-2011, 07:53 PM	#1
Pat Registered User Join Date: Jun 2007 Location: Littleton, CO Posts: 456	Running the heater makes the whole car shake Today when I turned the heater on, the whole car started to vibrate/shake. I turned it off, and the shaking stopped. I turned it on and off many times, and sometimes the car shook, other times it did not. Another interesting point is that when I turned it off, it seemed to take a couple seconds for the HVAC system to "spin down," and the shaking/vibrating was at it's worse during the three seconds between the LCD saying the fan is off, and actually hearing the system stop. Has anyone else experienced this before? What could it be? Loose bolt on the compressor? Please tell me this is an easy DIY fix. __________________ "Of all the extreme sports I've ever participated in- windsurfing, kite boarding, wake boarding, tow-in surfing and snowboarding- skiing, for me, made everything else easy." -Chuck Patterson Last edited by Pat; 12-14-2011 at 07:59 PM.