CLUNK! ??

crash · Post by **crash** » Sat Sep 23, 2006 4:00 am

ok.. the 93 rwd i just got clunks when shifting from park to reverse.. reverse to drive and vise versa. there is a slight spilt second delay then it engages. nothing seems to be slipping or anything.. it drives and shifts good.. just has this clunk. when initially engaging the gear.

my best guess: u-joints ?

my best guesses haven't won me the lottery.. so I'm looking for input on this one.. LOL

thanks
rob

lockdoc · Post by **lockdoc** » Sat Sep 23, 2006 5:06 am

Ujoints would be the first thing I check. Usaully you can grab the driveshaft while jacked up and see\feel any play at the ujoints.

e7ats · Post by **e7ats** » Sat Sep 23, 2006 6:33 am

Another sign of bad u-joints will be brown dust all around the u-joint and the yoke. Most of the time they should look clean unless they have grease on them.

Astro95 · Post by **Astro95** » Sun Oct 01, 2006 10:52 pm

It's always been my experience that a driveline clunk is caused by the pinion backlash being excessive due to a worn out rear axle. Sometimes it's caused by a worn out cross shaft inside the differential and sometimes it's the pinion bearings.

crash · Post by **crash** » Mon Oct 02, 2006 4:29 am

well i'll be dropping the driveshaft this week to change the rear trans seal. are the pinion bearings something that i can change easliy enough with the shaft dropped.. or ?

i guess i'm asking where are the pinon bearings.. ? lol

Astro95 · Post by **Astro95** » Mon Oct 02, 2006 10:56 am

I wouldn't think you would have to change the pinion bearings. You would only need to do that if they were making a lot of noise. In any event, the carrier must be removed to change pinion bearings. Like I suggested above, you might be able to slowly tighten the pinion nut until the backlash is gone. Pull the cover off first and look inside the differential case as you turn the pinion back and forth by hand. If you see movement between the differential case and the differential spider gears, pull the cross shaft and check it for wear. The shaft is made out of a slightly softer material than the spider gears themselves, so it wears first. New cross shafts are available.

crash · Post by **crash** » Tue Oct 03, 2006 3:42 am

thanks... that's something i'll look for when i drop the diff cover hopefully tonight (if i get that far)

rob

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CLUNK! ??

CLUNK! ??