PLEASE HELP (CONFUSED) Whine starts 60-70 mph

[pergolies]

Hi all, i have searched the forum to try and identify my problem but it seems it could be 1 of many things. I'll explain the problems i have noticed.

It has a whine which gets noticable around 60mph, seems like its coming from the rear but not sure, and you can feel a vibration in your feet, gets louder as you increase speed and whine is still there when take the load off. A couple of weeks later the ABS light came on (and is still on).

Before the whining started i did notice a small thump/jump when accelerating away sharpish, especially on a right hand turn!! Still doing this but hasn't got any worse.

Also when i pull up and reverse back i have noticed a small clunk or judder now and again!

Not sure whether these are all linked to one problem or seperate issues. As this is my only mode of tranport, i cant afford to have the truck off the road for to long and replacing parts here and there hoping i find the problem eventually! Would appreciate any help to identify the more likely problem first instead of taking pot luck. Cheers, Ken

 

[pergolies]

Bump.

Any ideas?
Wondering whether its time to say goodbye to the ol girl :-(

 

[pergolies]

Maybe i'm asking a dumb question :-(

 

[kert0307]

Is your rear differential leaking?

 

[pergolies]

Hi Kert0307, there is some evidence of oil leakage but it looks old as if its been there for ages. I have no oil patches on the drive where its parked most of the time.

 

[zogg]

My 97 Sport whines from about 30-35 on up....I noted that if I back off the gas the whine lessens or goes away UNTIL I step back on the foot feed.

A local mechanic advised that I try 3 qts of LUCAS 85w140 Synthetic gear oil...he said that especially on explorers and rangers, it usually helps a lot.

I ordered 3 qts online for $12 per qt...$36 might save me several hundred $$$ and lots of work swapping rear ends...worth a try and I will post the results...:roll:

 

[ramren16]

its your supercharger whinning up

 

[kert0307]

its your supercharger whinning up

ya, cause that comment is helpful...

 

[kert0307]

First things I would do is check the oil level in the rear diff, check tire wear and balance, check drive shaft u-joints and drive shaft slip yoke.

Next, check t-case outputs for play, take off the rear diff cover and inspect the gears.

 

[pergolies]

EH SUPERCHARGER??????????????

Think this is going to be a longer job than i hoped, oh well. I'll check all those things for wear this week apart from the tyres cos i know its not that (been changed and no difference). Thanks Guys.

 

[andrewlcarson]

I have the same problem with my explorer. Did the 3 quartz of fluid fix it or is it still whining?

 

[jevchance]

Keep in mind that your truck may need friction modifier added to the fluid if it has limited slip.