• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Engine Vibration Question

M

mirving171

New member
I have a 2001 pontiac grand prix gt with a 3.8L N/A motor w/ 120,xxx miles. A FWI, glass pack res, 180* T-stat, flowmaster mufflers. I recently changed the PCV valve, spark plugs and wires(factor AC Delcos), changed the oil, ran seafoam and Chevron fuel system cleaner. Changed the fuel filter, did a radiator flush and replaced the radiator(unrelated repair), replaced the throttle body inlet screen since I broke the other one attempted to clean the throttle body. All of the wires are secure and the idle(RPMs) aren't surging at all but the car has a very strong vibration, I inspected the top 2 mounts and they seem to be in working order and driving I feel no loss in power and there is no hesitation so I have kind of ruled out a fuel or spark problem. I believe I have tried mostly everything except for replacing the two easily visible mounts. Has anyone else had this problem or can someone recommend the next course of action I should take(I am trying to avoid a trip to the mechanic, I'm not trying to pay for him to guess the same way I did). Any help will be greatly appreciated.

Thanks
 


The top two mounts were pretty loose, I tightened them and there is a noticeable difference in the engine vibration. Does anyone know where the mount at the bottom is and how easy/difficult it is to change?

Thanks
 
you have 2 lower mounts, one is the trans mount the other is called a motor mount, the to up top are called strut, and mounts. where they bolt to.


heres a vid for the tranny mount, the engine mount is done the same way. its a 3 part vid.

 
Mounts and axles. Many have this issue, as previously stated, check the condition of the lower mounts and axles
 
You must log in or register to reply here.
Back
Top