i got an 89 rs 305/700r4 slightly modified smog pump removed new throttle body..before changes tranny shifted at 12-1800 rpms..after changes it doesnt shift until 3000 rpms all gears..is this a computer problem or did we mess somethin up

 

It's not a computer prob. Mine has never shifted at the same rpm's as it did when it was stock. It shifts at a much lower rpm now at WOT. Driving normal it shift perfectly. But I have a dual gate hurst shifter so I can manually shift for strip use. I adjusted my TV cable perfectly. But I doubt I'll ever get it to act as it did stock.

Are you talking WOT or just normal driving around town?

 

YOU REMOVED THROTTLE BODY.... theres your problem you have to adjust that tv cable. u knocked it out of adjustment when you removed the throttle body.

 

^^-- That's probably your answer. If not, you may want to look into adding weights to the tranny's governor.

 

ok what is a tv cable..the tranny has a governor?

 

TV Cable:
http://sethirdgen.org/tvcable.htm

Governor:
http://www.dragracingonline.com/tech...vi_9-bm-1.html

 

will this also stop the car from jerkin so hard when it shifts

 

curse 91z my tv cable setup is different than the one in the pics..i dont have a 'd' button it just hooks onto the throttle body at the end of the cable

 

i assume since you have a 91 z throttle body that your car is now tuned port?

edit: nevermind i read that wrong.



My 91z's shift points would vary slightly from time to time based on my modms and what kind of mood the car was in but it always was withing about 100rpm's never a 1500-1800 rpm jump. Something is definately out of wack. Id check the TV cable, have you changed anything else like the gear ratio?

 

no other changes made still not sure how to adjust the tv cable...another thing im worried about when the car shifts it jerks hard, almost feels like the rear end is gonna come out

 

http://www.tciauto.com/Products/Inst...ble_adjust.htm

Try here. If not, use google. It's your friend.

 

ok i adjusted the tv cable and and nothin changed

 

The only other thing I can think of is that the throttle body doesn't have the TV mounts in the same place, which may be causing your cable to not adjust properly. You might want to have a transmission shop or someone who knows 700R4s to take a stab at it.

The TV cable is one thing I DON'T miss about thirdgens

 

where does the tv tie into...you dont think it could be computer related?

 

Other than TCC lockup, the ECM doesn't control the transmission on a thirdgen.