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Re: 90 900T siezed (transmission) while driving Posted by CMyles [Email] ![]() ![]() In Reply to: 90 900T siezed (transmission) while driving, 90Turbo, Fri, 30 Dec 2005 13:58:28 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Well let's see, you can shift gears and put it in neutral with the engine running, so the clutch must work OK (right?). The fact that you can not roll the car means that you can't feed torque into the final drive from either direction. This is what happens when the transmission's pinion shaft falls out of it's bearings and the final drive locks up. If something external to the final drive of the transaxle was preventing ONE of the axles from turning then the torque would be directed to the other axle at high speed and your car would move (rather strangely). Having both front axles simultaneously locked up would be a heck of a coincidence. So I doubt that it's something external to the transaxle, like a CV or brake or something. Other things inside of the gearbox could lock it up like being in two gears at once which is a shift control failure or having the cluster gear bearing fail big time. Try this; Engine off, put the car in neutral and set the handbrake ('90 right?). Jack up both front wheels and see if they will roll (by hand). When you roll one wheel the other should roll the opposite way. If so then the problem is in the transaxle. Keep in mind that when doing this you are sending torque through the differential bevel gears and the ring and pinion are standing still so you are testing the axle assemblies for free movement, not the final drive.
If your pinion shaft bearings failed to that extent then rebuilding your transaxle requires a new ring and pinion (and set-up labor) that exceeds the cost of a good unit and makes rebuilding that one totally unpractical (although it may have some valuable little pieces in it). Was it noisy or hard to shift into some gears before the lock-up. Failing pinion bearings give lots of warning. What was the state of the gearbox lubricant? No lube will lock up a tranny real quick! Tell us what you find please. Good luck.
posted by 206.123.221...
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