Nissan Repair: 95 Quest tranny shifts hard, nissan quest, clunk

Question
QUESTION: Hi Calvin , I have 1995 Nissan Quest which starts and runs great ,however recently it has started to shift with really loud clunk....happens only when accelerating slowly...when leaning on it a bit...hardly noticeable . Fluid is at proper level and there is no burnt smell. otherwise drives great with no slipping or vibrations .Really love this van hope you can help.

Rod

ANSWER: Hello Rod -

have you tried checking the transmission mount? A lot of times when it is worn out, the trans touches the farme of the vehicle and you hear(and feel) everything.

Hope this helps -
aloha
calvin

---------- FOLLOW-UP ----------

QUESTION: thanks for reply,however I've tried checking mounts by
putting engine in gear forward and reverse while holding
on brake and with the hood up a mechanic checking mounts
...no movement
what I'm trying to find out is what controls the shift,..
speedo works fine but is there another sensor which is
causing problem.....even going from park to drive at idle
is a loud clunk..otherwise van drives perfect
...no slipping or vibration.

thanks in advance for any help

Rod  

Answer
Hi Rod -

That method is to check the motor mounts, not the transmission mounts. The fact that merely shifting from park to drive produces that clunk tells me that the trans mount is worn.

Try this test -
Get a floor jack and lift the engine at the transmission about one inch. Then shift from park to drive. If the clunk is less noticeable or goes away completely, then replace the trans mount.

Hope this helps -
aloha
calvin