Originally Posted by geezer#99 (Post 9271769)

Try this.


https://www.gtoforum.com/threads/hel...140685&slide=0

Originally Posted by Captain J (Post 9271773)

I didn’t see a connector similar to the pic on the right side (driver side)
The only connector is coming from the 4x4 firewall to the top left side, I think it’s for 4x4 engagement and light,
See pictures

Originally Posted by Captain J (Post 9271779)

Here are the pictures
Hopefully I can load it

Originally Posted by Captain J (Post 9271779)

Here are the pictures
Hopefully I can load it

Originally Posted by geezer#99 (Post 9271782)

That first pic shows the switch.

Originally Posted by Dead Parrot (Post 9271173)

What is your idle vacuum reading? Also check at the hose going into the modulator.

If your vacuum is low, it will make the modulator act like you are really into the throttle and keep the trans from shifting.

I managed to get me a vacuum gauge, but I don’t know how to use it, or where to connect it? Plus what to look for?


Check the kickdown switch and make sure it isn't stuck on. If it is stuck, it is telling the trans you are at near WOT and will also keep it in lower gear.

Originally Posted by Captain J (Post 9271742)

Yeah I know, but you guys helped me a lot, I appreciate that
The question is when I replaced the vacuum modulator the second time and oil came pouring out, 1. Where this oil coming from, I mean what opening?
Why the valve didn’t come out?
I tried to drive in D1 and D2 to see if any changes, nothing.

Originally Posted by Captain J (Post 9271779)

Here are the pictures
Hopefully I can load it

Originally Posted by GRADYS Performance (Post 9272994)

Did you disconnect the orange wire that went to the transmission in this picture?

Originally Posted by GRADYS Performance (Post 9272993)

As stated in an earlier post, The oil level rises in the transmission as the fluid drains from the torque converter back into the transmission the longer it sits.

Originally Posted by GRADYS Performance (Post 9273002)

What if anything does the transmission do? What happens when you try to drive it, Forward shifter in D? 2nd? 1st? What happens with shifter in reverse?

Originally Posted by GRADYS Performance (Post 9273006)

When it is in Drive or 2nd when you start out does it ever shift or does it just stay in 1st gear? When in Reverse it moves normally?

Originally Posted by GRADYS Performance (Post 9273008)

When you removed vacum modulator did you take the valve out behind the modulator? Did it move freely if you took it out and replaced it?

Originally Posted by kwmech (Post 9274217)

Probably a piece of that silicone

Originally Posted by cadillac_al (Post 9274545)

I figured it would be something simple lol. It probable was the sticking modulator valve. They are supposed to slide out easily. I didn't think we were going to get any further with the diagnosis without an actual vacuum reading at the modulator. Happy ending anyway.

Originally Posted by kwmech (Post 9274610)

manifold vacuum at the end of the hose 14-15 inches ----ish