jerking transmission on 2000 Buick Century

this car har has approx 65000 miles. it is not used approx 5 mos durin summer months.most of the time it rides smoothly but at times it will jerk when shifting gears. when i shut motor off and restart this will stop. sometimes for weeks sometimes for hours and sometimes for minutes.my mechanic checked the car and drove it while happenning and said he never saw this before and had no idea what was wrong. i have already changed the transmission fluid and the filter,did not help. hope you will be able to help me,thanx

by in Deerfield Beach, FL on April 29, 2009
4 answers 3 comments
ANSWER by on May 01, 2009
Are there any codes stored in the powertrain control module? Codes stored may help isolate the cause of your problem. It sounds very much like an electrical issue being that the fault will go away after cycling the ignition. If there are no fault codes stored then it may be necessary to have a technician test drive with a scan tool in order to try and see if something is out of spec when the problem occurs.
1 person likes thisFlag inappropiate
COMMENT by on July 06, 2010
MY MECHANIC CHECKED WITH THE COMPUTER AND DID NOT FIND ANY CODES
COMMENT by on June 10, 2013
Did you ever find out what the problem is with your Buick. I have a 2000 Buick Century doing the same thing. It jerks into gear some of the time but if I turn the car off and restart it the jerking goes away. My car has been to the shop twice and they have fixed everything they could think of but my car is still jerking. It didn't do it for two weeks after "being fixed" but I just went up to the store right around the corner and its started again.
ANSWER by on July 06, 2010
its code 1811, slipping transmission, usually happens after you drive a long time then pressure builds up and does a long shift which is the jerking, i just bought my car and its already in the transmission shop to be rebuilt. You can call a buick dealer like I did and they can explain the code in more detail.
2 people like thisFlag inappropiate
COMMENT by on July 06, 2010
I CAN GO WEEKS WITHOUT THE JERKING OR IT WILL START A FEW MINUTES WHEN I FIRST START OUT
ANSWER by on July 15, 2010
e-mail your answer to lenawee@frontiernet.net
1 person likes thisFlag inappropiateReply
ANSWER by on March 13, 2011
check catalytic converter I have 03 regal did same thing finaly figured out it was bad catalytic converter
Related Items:
So at first my car started jerking very bad after a 2 hour trip right after replacing my starter which was never bad I just figured I'd replace it bc it was old when accelerating from 0-45 mph it ...
The first 10-15 mins. it runs great, but then it will stall, jerk, and die when I brake or stop completely. To keep it running I have to slip it into neutral while stopped, and slip it back into d...
my car jerk when the gears are shifting?? can i put oil or do i have to get oil change
WHEN SLOWING FOR INTERSECTION AND THEN ACCELERATING OR TURNING CORNER THERE IS A SLIGHT HESITATION AND LITTLE JERK LIKE IT SHIFTS UP TO HIGHER GEAR