2008 mercury mariner vibration

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2008 mercury mariner vibration

Postby dirtstocker73 - December 1st, 2016, 11:40 am

i have a 2008 Mariner. V6 AWD. has a very bad vibration at around 40-45mph. and gets worse, vibrates so bad you cant see straight. u-joints have been replaced and driveshaft balanced. rear diff has been replaced (used). swapped wheels and tires from another truck. front halfshafts have been replaced. pto has been replaced (used). nothing has changed the vibration except for removing driveshaft and driving without it. which is a lot better. any suggestions? maybe driveshaft is no good even tho its been balanced ? thanks
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Re: 2008 mercury mariner vibration

Postby Charles - December 1st, 2016, 5:19 pm

First of all, welcome to the City!!!! :welcome: Sorry you are having issues with your Mariner.

I am moving your thread to our Problems and Solutions forum to increase the likelihood of getting an answer to your question.
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Re: 2008 mercury mariner vibration

Postby MTNEscaped - December 1st, 2016, 8:24 pm

dirtstocker73 - Today, 11:40 am

i have a 2008 Mariner. V6 AWD. has a very bad vibration at around 40-45mph. and gets worse, vibrates so bad you cant see straight. u-joints have been replaced and driveshaft balanced. rear diff has been replaced (used). swapped wheels and tires from another truck. front halfshafts have been replaced. pto has been replaced (used). nothing has changed the vibration except for removing driveshaft and driving without it. which is a lot better. any suggestions? maybe driveshaft is no good even tho its been balanced ? thanks


Another welcome.
:welcome:

With the driveshaft out how much slop in the output shaft / yoke to the driveshaft?
Tried having a transmission shop look at it? :?
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Re: 2008 mercury mariner vibration

Postby 14theRoad - December 2nd, 2016, 1:16 pm

MTNEscaped wrote:
dirtstocker73 - Today, 11:40 am

i have a 2008 Mariner. V6 AWD. has a very bad vibration at around 40-45mph. and gets worse, vibrates so bad you cant see straight. u-joints have been replaced and driveshaft balanced. rear diff has been replaced (used). swapped wheels and tires from another truck. front halfshafts have been replaced. pto has been replaced (used). nothing has changed the vibration except for removing driveshaft and driving without it. which is a lot better. any suggestions? maybe driveshaft is no good even tho its been balanced ? thanks


Another welcome.
:welcome:

With the driveshaft out how much slop in the output shaft / yoke to the driveshaft?
Tried having a transmission shop look at it? :?


I would assume that whoever balanced the drive shaft also indexed it correctly back into the drive train? Have you tried simply rotating the shaft a quarter turn in the mounting holes to see if any of the positions reduce the vibration?

Also, there's a pinion angle that may need to be checked and adjusted.

Pinion angle is the angle of the shaft in relation to the output shaft of the Transmission and the Pinion flange of the differential. If that angle is off you can get noise and vibration.

Start with the indexing first. You can do that at home on your own. Check the transmission flange and pinion flange for marks to see if first they are aligned. If not, align them, with the shaft off, then install the shaft and index it if needed.

If no marks exist, just clock the shaft until you get less or no vibration.

if that doesn't work, have the pinion angle checked by a reputable Driveline shop.
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Re: 2008 mercury mariner vibration

Postby Squirrel - December 3rd, 2016, 6:13 pm

What kind of vibration? Is it thru the whole car? Is it only thru the steering wheel? Are the tires wearing oddly?
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