The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Hard shifting auto trans 200 1989

posted by  Matt L on  Fri Mar 15 07:02 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Aug 23 08:46 CST 2010
[RELATED]

There is no vacuum shift control. The shift happens when governor pressure exceeds throttle pressure (or maybe it's the other way around). Governor pressure is related to the speed of the output shaft. Throttle pressure is related to how far the kickdown cable is pulled out.

The AW7x shifts hard (by design) in low throttle high RPM conditions (i.e. when there is a misadjusted kickdown cable). This is observed by putting the transmission into 1, driving up to 20 mph, letting off the gas, and then putting the transmission into D (CLUNK!). Since you say this problem has only started since you reinstalled the transmission, I'd say almost definitely a misadjusted cable is your problem. There are detailed notes in the FAQ on how to get the cable adjusted properly, or just play around with it. If you're having problems with the cable binding, then you should probably replace it. There are also instructions in the FAQ on how to do this.

BTW that sensor that you were talking about is the crank position sensor... that's how the engine computer tells where top-dead-center is.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.