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Please help Vibration driving me crazy

7 messages,  Last post on Sep 21, 2012 at 2:37 PM

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#1 of 7 Please help Vibration driving me crazy by pokiies

Apr 21, 2009 (5:40 pm)

2004 Pontiac Montana fwd 126000 mileage
 
About two months ago I developed a vibration in the front end of the van. We replaced the bearings, ball joints, tie rod ends, drive axles, brakes, four tires with a front end alignment. It is still there. It starts at approximately 35 to 40 mph only to go away as soon as I take my foot off the gas pedal or hit 50 mph. We have asked several mechanics and not one has a clue.
 
Hoping some one can shed some light on this, maybe someone else has encountered this or just simply might know what is going on.
 
Thank you in advance....

#2 of 7 RE: Please help Vibration driving me crazy by kennie

Apr 22, 2009 (10:37 am)

Rotors?

#3 of 7 RE: Please help Vibration driving me crazy [kennie] by pokiies

Apr 22, 2009 (11:57 am)

Replying to: kennie (Apr 22, 2009 10:37 am)
We checked them when we did the brakes, they are fine.

#4 of 7 RE: Please help Vibration driving me crazy [kennie] by kennie

Apr 22, 2009 (12:15 pm)

The only thing I can think of is to take your car to a drome (not sure what the damn thing is called, it's used for testing speedometers) - maybe they can bring the van up to speed under load and look for the cause... not sure if that would be worth a try or if it is even possible. Sorry.

#5 of 7 i have had this similar problem by mastertech19

Apr 24, 2009 (9:48 am)

i would check all your motor mounts and your transmission mounts its deffinately in the driveline such as axles. but when your mounts are worn out they will throw the angle off on your axles and such. i have seen the before check all the mounts and let me know what u find.Good luck

#6 of 7 Re: i have had this similar problem [mastertech19] by kennie

Aug 11, 2010 (1:18 pm)

Replying to: mastertech19 (Apr 24, 2009 9:48 am)
I have the exact same problem... were you able to fix the problem or did you just eventually sell the vehicle. It is driving my wife and me crazy... any advise of updates appreciated !!!!!

#7 of 7 Re: Please help Vibration driving me crazy [pokiies] by geminix

Sep 21, 2012 (2:37 pm)

Replying to: pokiies (Apr 21, 2009 5:40 pm)
did you hit something to bend the halfshafts?

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