700R4 front pump questions
Thread Starter
Intermediate
Joined: Jul 2004
Posts: 33
Likes: 0
From: Williamston NC
700R4 front pump questions
Installed Transgo Shift kit and got a problem? When in Drive or OD at WOT the transmission shifts way to soon. But when shifting the car or in Drive or OD (without WOT) the car shifts fine and firm. Also the firmness go away when shifting the car at WOT. Called Transgo and the tech told me to check pump pressure. Did that and it was way to low. Can you rebuild the front pump or do you have to buy new pump or newtranny.
Never checked pump pressure before so cannot tell you if problems are from Transgo install or we had problems before install??
Thanks
Never checked pump pressure before so cannot tell you if problems are from Transgo install or we had problems before install??
Thanks
Safety Car
Joined: Aug 2002
Posts: 4,812
Likes: 1
From: New Albany IN
St. Jude Donor '03-'04-'06-'08-'09
Are you absolutely sure you installed all the pistons and valves exactly how they say? Look at the accumulator pistons and make sure you put them in correctly..I do believe the transgo kit requires you to put one in uspside down.
Since you didn't rebuild the tranny, I would think that the likliness of the pump having problems the same time you installed the kit are slim.
Did you take any of the valves out when you did this?
Since you didn't rebuild the tranny, I would think that the likliness of the pump having problems the same time you installed the kit are slim.
Did you take any of the valves out when you did this?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Most shift kits raise the pressure. If you didn't have the shifting problem, before the kit install, check the installation of those related parts. I smell an installation problem.
RACE ON!!!
RACE ON!!!
Thread Starter
Intermediate
Joined: Jul 2004
Posts: 33
Likes: 0
From: Williamston NC
[QUOTE=Bruthish]Since you didn't rebuild the tranny, I would think that the likliness of the pump having problems the same time you installed the kit are slim.
The tranny was rebuilt about 500 miles before we did the Transgo shift kit. Also we have looked over the valve body, I know 3 three times checking behind ourselves, (check ball placement and springs installs). Everything looked and seemed to be installed correctly per Transgo's instruction sheet. We also ground off a land on one of the valves in the front pump also per directions. We did not do that step unitl the last after we test drove the car. Told Tech at Transgo and he stated that we needed to do that step, we did no difference in the pump pressure though. Thanks
The tranny was rebuilt about 500 miles before we did the Transgo shift kit. Also we have looked over the valve body, I know 3 three times checking behind ourselves, (check ball placement and springs installs). Everything looked and seemed to be installed correctly per Transgo's instruction sheet. We also ground off a land on one of the valves in the front pump also per directions. We did not do that step unitl the last after we test drove the car. Told Tech at Transgo and he stated that we needed to do that step, we did no difference in the pump pressure though. Thanks
