Reinstalled 700r4 and it wont go into gear - Third Generation F-Body Message Boards

theboilermaker · 09-04-2009, 06:39 PM

I just rebuilt my 350 and got it running. I put the car into drive and got nothing. Checked the tranny fluid, moved the shifter. still nothing. So I then checked to make sure that the Torque Converter was engaging the pump. Slip the tranny back and sure enough everything is lined up perfectly. So I Dropped the pan changed the filter and everything seemed ok. Cleaned everything very well, put in a new filter and gasket, filled up the pan, and still I have nothing. What am I missing? Is there a stuck valve or regulator? I am stumped on this one

Thanks for your help... I need it on this one!!

fernando rs · 09-04-2009, 07:44 PM

hey, did you check the vaccum modulator. It should have a vaccum line running from the back of the tranny up to the intake for vaccum a source.

theboilermaker · 09-04-2009, 07:51 PM

I don't recall there ever being a vaccum line hooked to the transmission. What is the purpose of the vaccum line?

Thanks

camaronewbie · 09-04-2009, 09:01 PM

No vacuum modulators on 700R4 tranny's.

Rolling Thunder · 09-09-2009, 02:03 AM

Unfortunetly this is one of the downfalls of having automatic transmissions that are not well maintained. Im assuming this is a +100k mile car thats never had its fluid changed? A lot of times that old crappy fluid was the only thing holding these old unmaintained transmissions together. Sludge makes seals seal grit makes clutches and bands catch ect.