A manifold vacuum source, anywhere below the throttle plates.
on thepass side of the transmission pan.it has a hose connected to it.
It is on the transmission. It has a vacuum hose connected to it. It is round, about two inches in diameter. Robert Foley.
If your transmission has a modulator it is on the side of the trans and it has a nipple on it for the vaccum line. I you. Mark
assuming your talking about the transmission modulator...visually inspect the transmission and look for a vacuum hose from the engine to the tranny...
The modulator is located just above the starter on the side of the transmission, it has a vacuum hose attached to it. The solenoid is located in the transmission, you have to remove the transmission pan to remove it.
The modulator is held into the transmission with a stamped metal "fork" that is bolted into the transmission. Remove the bolt, remove the vaccum hose and wiggle/turn the modulator to extract it. Be careful during the removal because there is a short pin in the modulator that has to be replaced when you put the new one in. .
Are you asking about the vacume modulator for the distributor? That is on the distribiter, you will see a hose on it or wher hose should be. If ou are wanting vacume modulator for the automatic transmition it should be on passenger side of transmission toward the back.
To change the transmission modulator valve in a 97 Pontiac Bonneville you will first need to lift the vehicle off the ground. Then, remove the vacuum hose and the defective valve. You can then replace with new, and replace the hose.
I assume your refering to the vacuum modulator which controls transmission shift points. Remove the vacuum hose from the modulator. Using a small screwdriver, turn the screw inside the modulator. It may take several tries to get it right.
It's a constant source such as the intake manifold or the base of the carburetor.
It is on the passenger side of the transmission towards the back of it. It will have a vacuum hose hooked to it. There will be a small bracket with 1 bolt that holds it in the transmission. Do not loose the small pin that is inside of the transmission when you remove the modulator valve. You will loose some trans. fluid.
Sounds like the vaccuum modulator might have gotten disconnected. Pass side of the car, side of the trans. A vaccuum diaphram, with a vaccuum hose connected, that runs up to the motor.