2g gsx not freely spinning tires

[WhiteThunder]

Just need a couple pointers! Here’s the background on the gsx I just picked up, Kid that had it before me was not running the same tire size on all for tires So when I got the car I immediacy put on new rims and tires. Took it for a spin and as soon as you put the car under any acceleration it vibrates the steering wheel and the whole car itself. As soon as you hit about 35+ you hear a loud/low whining noise that seems to be coming from the wheels. It increases the faster you go and its not drivable past 65 because the noise is just too unbearable! Once up to speed the car feels fine doesn’t shake only under acceleration. Also Its in any gear and doesn’t go away when in neutral. Took it to the shop and got the car up on all 4. Started the car and put it in first. All 3 tires are spinning fine at 1k except the front passenger side! It kind of tries to turn but then stops, I can help spin it with my hand but only rotates about 1 rotation then stops again. My question is will a wheel bearing cause my front right tire not to spin while its in the air? or is it possible my transmission is going bad because the previous owner did not run the correct tire size all the way around? I know it can ruin the drivetrain by running a different rim size. Also took it for a drive just around town stopped and spat on all my rotors. Back two didn’t sizzle but the fronts burned off my spit so they were pretty hot.

 

[Sebba]

Is it coming from the front or rear of the car?

The transfer case is probably what's whining.

 

[WhiteThunder]

I would say that's a very good guess since I just dropped the plug and found metal shaving in my T-case! Now I am deaf in my right ear but the sound does seem to be coming from the back/middle of the car where I'm sitting. Will the Tcase cause that though? I thought it only controlled the back two wheels? Also when I take the pass wheel and turn it back and forth in a quick jerk motion I hear a clink/clank about where the T-case is but its bolted up to the tranny so its hard to tell.

 

[ChiTownHussla]

drain and refill the fluid before u lock your t case up like I did. do that and report back

 

[WhiteThunder]

Okay I might have left out a bunch of info cause I didn't want to make a story! But I owned this gsx previously. When I had it Tcase was leaking and got to about half full. When I drained it back then I saw a bunch of shavings and knew it had took some damage. Filled her up with Redline heavy weight gear oil and only drove it around a couple days . Sold the car to some kid who just came up to me with 4k how could I say no? He drove it for about two months before I got the car back from him because he just couldn't deal with no ps and the act 2100hd clutch, so we got him a Honda but anyways yes it has been refilled two months ago since I saw shavings and I do remember it whining only a little on highways speeds when I sold him the car, obviously now its a lot worse! Thanks for pointing me in the right direction I knew the Tcase would suffer problems but wasn't sure if it would cause my right front tire not to spin in the air.

 

[jtmcinder]

One of the fronts often has enough drag not to spin at all with all four in the air. The front diff is wide open, so it's easy to spin just one of them like that. Nothing wrong there.

If the car was driven for longer periods with different front and rear tires, you probably have a cooked center VC. But if three wheels spun with all four in the air, it might not be totally dead. Just mostly dead, as the witch said in Princess Bride.

ps. for mega extra (but OT) points, which great DSM driver and previous member of this site used a quote from that movie as his signature?

 

[WhiteThunder]

Well it was driven two moths with rims that came off a GST so the fronts where the same and the backs where a little bigger. Wow I can't beleive I don't know what a center CV is! Sad . So there's the Transfer case and the rear differential and the shaft that connects the two, is the center CV part of the transmission?

 

[jtmcinder]

Not CV. VC. Viscous coupling. It's the limited-slip device on the center of AWD DSMs.

Time for some reading:

http://www.dsmtuners.com/forums/art...17-diffs-lsds-part-1-types-differentials.html

http://www.dsmtuners.com/forums/articles-drivetrain/177206-diffs-lsds-part-2-types-limited-slip.html

 

[WhiteThunder]

I actually just googled it but your links provided more info Thank you! Makes sense now so the tire size would cause the liquid to heat up and change structure now as far as the tcase having shavings I should probably replace that along with the VC even though my back tires are spinning fine at the same speed when its up in the air.

I have another gsx sitting in my shop so this weekend I'll swap out the tcase and VC if I have time and update! Thank you much!

One of the fronts often has enough drag not to spin at all with all four in the air. The front diff is wide open, so it's easy to spin just one of them like that. Nothing wrong there.

So to be clear the front will have enough drag that if I put my car in gear while its off the ground it will not spin one tire? The pass side wheel kinda just moves back n forth a tiny bit on its own like its trying to rotate but cant

 

[jtmcinder]

Yes. If one front has enough (more) drag due to the axle, bearing, brakes, etc, then it will take none of the power and let the other side have it all. Gotta love a completely open diff.

 

[pauleyman]

Center diff can also take some damage. It would be constantly spinning with different size tires instead of just when turning etc. You wouldn't know unless you took it out and took it apart. I've seen very few good condition center diffs that had not already been rebuilt let alone abused units like yours.

 

[WhiteThunder]

Thanks guys, my friend has a full awd drive set up he's willing to sell me thankfully. So lets see if I'm understanding this right, Center VC is in my tranny as well as the center diff which is behind that? Also is there more than one Viscous Coupler? I've done everything on a dsm except rip into my tranny so im pretty excited . I'm going to drop all my fluids tonight and do a visual for the rear diff, tcase, n tranny to start.

Viscous Coupling**