What causes the transmission to down-shift roughly on stopping? on 1998 Honda Accord

Car drives ok. Up-shifts smoothly but jerks when you come to a halt and it shifts into 1st. Mounts are ok. Replaced "lock-up" sensor but problem persists.

by in Atlanta, GA on March 18, 2014
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3 answers 4 comments
ANSWER by , March 18, 2014
Mounts are ok? Any engine movement when shifting from reverse to drive and viseversa? Upshift puts a different torque load on mounts as opposed to downshift! Engine will react differently. Have a mechanic test drive it.
COMMENT by , March 18, 2014
The engine and transmission mounts were replaced with genuine Honda mounts. The jerking occurs only when you come to a complete stop, not when it down-shifts while in motion.
COMMENT by , March 18, 2014
Check engine light on? Does it feel like an engine skip or misfire while stopped in gear?
COMMENT by , March 18, 2014
No check engine light. Engine runs smoothly all the time.
COMMENT by , March 18, 2014
See next answer.
ANSWER by , March 18, 2014
What is the idle speed at in park and in drive? Honda ATF in it? Check level with trans warmed up and engine shut off , on LEVEL surface. Next step would be to have trans monitored while test driving. How many miles on it & is it original trans?
ANSWER by , April 05, 2015
My check engine light is on when this happens