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  #16  
Old 10-17-2007, 03:20 PM
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Clunking sometimes can be a bad transmission mount if its doing it in reverse.
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  #17  
Old 10-17-2007, 03:32 PM
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Mine binds in reverse also. When i back out of my gravel drive way onto the street, one of the rear wheels will actually spin on the gravel because the binding is so bad. Definately not the tranny mount.
Im interested in what bruce was asking. My fwd fuse works intermittently also.
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  #18  
Old 10-17-2007, 03:59 PM
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OK...Torque Bind is caused by the transfer clutch sticking closed. Pure & simple.

The complexity comes in the WHY the clutch is sticking. There are a few causes of this:

#1, Duty Solenoid C. Could be dirty/sticking, if you put the FWD fuse in & it doesn't help, this is most likely the culprit. Not always, but most often.

#2 Transfer clutch welded closed. This is caused by ignoring Torque bind, and/or running mismatched tires, for a prolonged period of time. The plates are actually fused together.

#3 TCU problems. This is the least likely cause.

A few quick tests, and one "what have you got to lose" fix.

Test #1 Insert the FWD fuse, if the bind goes away, your solenoid is most likely ok.

Test #2 On level pavement turn some tight, slow circles. The car SHOULD move at idle with the wheel just off full lock. If it takes a slight, to moderate rise in idle speed to move, your clutches are sticking. If it takes mashing the gas, you may be too late.

"What do you have to lose fix". Flush your tranny fluid. Drain the old fluid, refill, drive it around the block, repeat 3X. If the binding has just started, this can break the clutches loose, or dislodge some grit from the solenoid.

How do I know this? My Leggy tried to start torque binding, and I did my research over at USMB. I was fortunate, in that flushing my fluid fixed my torqe bind.
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  #19  
Old 10-17-2007, 06:47 PM
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Ah, so.

Good info. Sounds like I need to go back to the shop...they checked the duty solenoid last year and said they thought it was ok. But it was stuck in AWD soon after that. With the clunks/clicks I'm hearing (front and rear), I probably have other issues too. Sigh. Looks like I'll be late with the mortgage again!
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  #20  
Old 10-18-2007, 06:52 AM
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Having the FWD fuse in and intermittently having the binding issues, leads me to believe the Duty C solenoid may be bad, or a possible wiring issue. Especially in a rebuilt trans. The wires can get pinched in the clutch housing during reassembly.
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  #21  
Old 11-25-2007, 05:03 PM
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Same issue for me.

while going in reverse and turning the wheel the rear makes a clunking sound like something is binding in the driveline.

I hope to find the problem to be a simple one.
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  #22  
Old 11-25-2007, 05:46 PM
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I'm no SVX specialist, and what I know of torque bind, is from my Legacy with an open rear diff. In reverse, my Legacy's symptoms were exactly the same as forward. It was like the brakes were dragging.

COULD the LSD cause a minor binding in reverse? Added to this weak differential bushings making the diff itself "clunk" in it's mounts?
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  #23  
Old 07-21-2008, 03:49 PM
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Re: binding problem - i know i know....

Resurrecting here,
becuz while i was just testing a different tcu w/ a 6 mile drive.
I found the car was BINDING bad on slow speed turns but right hand in particular.
To the point where it felt like the ebrake had been applied and i had to giv'er gas.
Since this was the only change, i just swapped back to my original tcu and absolutely no binding at all. Even @ full lock.
though i used to have chatter from synth diff oil. i just put in some sliplock and no chatter.
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