The clunk thing

[etlsport]

my VX has always done that clunk after very hard braking, just figured it was normal. i prepare for it now, when i come to a hard stop i just shift to neutral for a second to relieve the tension

[nocturnalVX]

My VX would clunk if I didn't come to a complete stop and then hit the gas. The transmission had a slight leak and it was slipping. Maybe that's what is going on?

[MoonRaker]

Na, tranny is tits. Ive checked the fluid when I changed, no band crap.

[MoonRaker]

my VX has always done that clunk after very hard braking, just figured it was normal. i prepare for it now, when i come to a hard stop i just shift to neutral for a second to relieve the tension

Im pretty sure its not normal, atleast on mine. Im woundering if it has to do with the rubber mounts in the A arms. Maybe you load them under hard braking and when you release them they become unsprung causing the clunk. Another thought is like I said before about the transfercase chain having slack. There does seem to be alot of backlash in the drive shaft entering the transfercase. If the rebuild for the transfer case costs 1100 in part, I wounder how much it would cost to put fresh gears, bearings and seals in the front and rear diff, couldnt be that bad. Im trying to keep this truck alive for atleast another 100,000 miles if not more.

[etlsport]

not sure what could be cuasing it but its a similar feeling to when i start the vx and put it into drive while the e-brake is still pulled. the vx doesnt actually move but it feels like its raising

[tom4bren]

"not sure what could be cuasing it but its a similar feeling to when i start the vx and put it into drive while the e-brake is still pulled. the vx doesnt actually move but it feels like its raising"

That's axel wrap & it's normal.

[Deigo]

i was going to ask about the clunk too. when im in low and shifting between drive and reverse there is a cluck and jerk. i twisted the drive shaft by hand and there is about a quarter inch of play, so i assume the clunk is the drive shaft twisting free before catching and that low range amplifies the jerk by applying more force( torque ). i was thinking worn u joints, but could you explain axle wrap as this may be the problem.

[WILLY]

Well i too have the sprung energy thing after releasing the brakes and i have thought it might b the brake callipers,my callipers although securely bolted on have a small amount of play in them when grabbing them and jerking front to back so i thought they might be being drivin forward when braking to a stop and then when the brake is released they spring back, idunno just a thought.

[tom4bren]

I guess I used the term axel wrap too generally. When your vehicle 'stands up' with the parking brake applied, the same forces are at work, just not to the same extent.

"Wrap-up - Referred to as both rear spring and rear axle wrap-up. As power is applied, torque load causes the rear pinion to pivot upward. Once this load reaches a certain point the leaf springs begin to deform, which stresses numerous driveline components. The "fix" is to increase spring strength, via add-a-leafs, or install traction bars."

I know that this definition is for leaf springs but similar effects will be in play with coil springs. Remember when Kicker shocks, sub frames & ladder bars were the 'all the rage' with agressively lifted trucks? Those were all cures for axel wrap (wheel hop) just like steering stabalizers were supposed to stop 'bump steer'.