Need help diagnosing

[LarryNSteph]

Hello All!

Ok, new problem with my car and we can't seem to figure out what's causing it. Ergo, I am turning to the resident experts to help me solve this!

I have a 97 Mark VIII LSC. While driving on the highway over the weekend, my car decided to start with a new "issue". While accelerating, when my car hits exactly 2200 RPM (approximately 72-75 MPH) there is a bad vibration and low pitched moan. I can feel the vibration in the steering wheel and driver's seat, and the rear view mirror shakes. If I take my foot off the gas pedal, it stops. This doesn't happen at lower speeds/rpms.

Any ideas?

Thanks in advance for the help!

 

[MonsterMark]

Your car just developed the infamous "driveshaft vibe" which inflicted all 2nd Gen models and most of the 1st gen. Best cure is a new driveshaft for about $350-400 or you can play around with some hose clamps but that is really hit or miss. Even pulling out the driveshaft to rebalance it is a waste of time. Its pretty much either live with it or replace it.

 

[LarryNSteph]

Your car just developed the infamous "driveshaft vibe" which inflicted all 2nd Gen models and most of the 1st gen. Best cure is a new driveshaft for about $350-400 or you can play around with some hose clamps but that is really hit or miss. Even pulling out the driveshaft to rebalance it is a waste of time. Its pretty much either live with it or replace it.

Does this nasty little vibe adversely affect anything? I.E. performance, gas mileage, etc? Is it ok to just live with? Mr. Budget is not going to fit in a repair cost like that right now.

 

[mrlandyacht]

yea, definitely driveshaft....maybe check out the U-joints..our older lincoln had the same problem, exactly.... :Beer