I recently bought a 2001 Dakota V-6 with 5-speed manual transmission. This
is the 1st manual tranny I've had in about 10 years. Here's the problem:
When I let the clutch out I sometimes hear a single "klunk" coming from
somewhere in the drivetrain. It is most noticeable when letting the clutch
out when making a turn. I took it back to the dealer and they said is was
the backlash in the rearend and it was normal. And that it would stop
occuring when I get better at using the clutch. Is the dealer right? Does
anyone else have this problem?
Does it sound like the front part of the drive train? I had a car
(Saab 9-3) once with a broken motor mount. When accelerating, a loud,
vibrating THUMP would come from the front of the drive train ...
My 01 r/t with the automatic does the same thing when I let off the gas and
start decelerating with out the brake. It has done it since the 1st day I
drove it off the lot. It sounds like a bad u-joint but the u-joins are fine
and my rear has been checked 5 times because of it.. We finally gave up
trying to figure out exactly what it is. I took it to 3 different dealers.
Half the time they could never replicate the problem. the 3rd time they took
apart the diff and every thing seemed to look just fine, but the noise
continued every once in a while, Maybe, once a day. Lately I have started to
think, it might just be the tail gate moving...
If you find out, let us know..
dont know how related this would be but chevrolet had problems with a drive
line klunk on decel a while back. they suggested it being because of drive
line wind up due to the slip yoke not slipping on the trans output shaft.
they suggested using a special lubricant and lubricating the drive shaft
slip yoke. dont know what kind of lube it was other than it was "special"
Ok, simple tests for U joint problems. Put the transmission in 1st with
parking brake on. Let out clutch, apply gas normally .. hear klunk? Put
transmission in Reverse, repeat clutch and gas .. hear klunk again?
Probably a U joint. I have 2000, and replaced U joints, two were very bad,
the others were on last legs. Do you notice any low frequency vibrations
while driving at highway speeds? Notice any noises when moving slowly, like
crickets chirping? U joints, most likely.
Back lash in the differential gears is measured in
thousands of an inch. Thousands. Reach up thyere and
grab the drive shaft. Turn it back and forth, if you
can see/feel it moving back and forth, the backlash is
far more than it should be. Checking the left carrier
bearing would be the first step.
As a matter of fact, I just did this today. The drive shaft DOES move back
abd forth. I didn't measure it accurately with a ruler, but "eyeballing
it" I would say is moves about 1/8". I also jacked up the rear end so
both tires were off the ground and tranny in first gear. I can move the
tire, on the RH side, back and forth 1/2". (I put a mark on the side of
the tire near the tread and had my son hold a yardstick while I moved the
tire back and forth). On the LH side I could barely move the tire back
Thanks for all you responses. I did get a second opinion and was told
rearend was okay but a Ujoint was bad and there was a lot of play up front
- possibly the tranny or transfer case. So I took it back to the original
dealer and they replaced a Ujoint on the rear driveshaft and also replaced
the transfer case. There's still a very slight klunk on occasion but it's
a whole lot better than it was. All the work was covered under warranty
included a BRAND NEW transfer case.
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