the modulator valve does not have a screw, however, the modulator located outside the modulator valve may or may not have one.
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.
as far as I understand , it does not have a modulator. e4od are electronic. no vacuum shift modulator
On some of the older vehicles the vacuum modulator controlled the shift points of the transmission by using the vacuum supplied from the engine.
Could be no vacuum to the modulator.
Assuming you mean the modulator on an automatic transmission... The modulator help to control the timing of the changing of gears in the tansmission. The modulator uses manifold vacuum to finetune the shift point, lower vacuum means higher load, throttle is open wider, shift point will be delayed.
It's for a modulator valve. The later cars all shift by electronics and signals from the ECM. Yours however still uses a modulator valve and vacuum to assist in determining shift points.
On the 440T4 Automatic Overdrive transaxle the modulator is on the front of the case, A vacuum line leads to it from the intake manifold.
I had this problem on a car once. If it won't shift by itself, but it does shift when you go through the gears manually, it's the vacuum modulator. Replace it and you'll be good to go.
There is no adjustments to a 350 Turbo Transmission (GM). The only external thing that would cause shift problems is the vacuum modulator on the side. This is replaceable easily. Check for proper vacuum signal to the modulator. Make sure there are no holes and or kinks in the vacuum line from the engine to the modulator. If none is found, replace the modulator for shift complaints. If it is slipping, the tranmission will require removal and overhaul. This transmission uses wet clutch plates and automatically compensates for wear in the plates to a certain point.
Dodge transmissions do not use vacuum modulators.Dodge transmissions do not use vacuum modulators.
cable is demand vacuum modulator is vacuum which translates to LOAD> last is governor ,and this is speed bases (rpm at tail shaft) how is that.
No. It relies on the computer and sensors for shift points, firmness, etc. IF it has a vacuum modulator, it likely i s a backup device to get it home in case of electronic failure (which usually means the vehicle won't run anyway)