Where does the transmission modulator hose go?

Where does the transmission modulator hose go?

If the truck has a vacuum hose to the transmission (to the vacuum modulator), the line will be a metal tube attached to the large tube that the transmission dipstick is in. It will come up and connect to a hose that will run to the base of the carburetor.

Will a Turbo 350 shift without vacuum?

Will a th350 change without a vacuum cleaner? If it does not have a manual valve body, it will not go at very high speeds without vacuum. Aside from disconnecting the vacuum line, the line pressure gets too high which can wreak havoc in the transmission, I don’t think it will shift up.

How do you test a vacuum modulator on a transmission?

Testing the Modulator

1. Block the rear wheels.
2. Locate the vacuum modulator on the passenger side rear of the transmission.
3. Pull the vacuum hose off the modulator and install the vacuum pump.
4. Look for any transmission fluid running out of the vacuum port on the modulator, indicating a broken diaphragm.

What happens when a vacuum modulator goes bad?

The main symptom you will notice is weak engine performance. If the diaphragm of the vacuum modulator were to have a leak in it, you will have a leaky vacuum and your EGR system will shut off. If the vacuum leak is too severe, then you will notice less power in your engine as well as acceleration problems.

Can a vacuum leak affect the transmission?

The transmission can be controlled. A vacuum leak will cause the engine performance to suffer, causing load and throttle position issues which could affect transmission shifting.

Can a vacuum leak cause transmission problems?

Do you need a kickdown cable on a Turbo 350?

See all 8 photos Other than the convenience of automatic downshifts into passing gear at highway speeds, there’s no real need for a simple kickdown cable on those transmissions like this TH350 that have a vacuum modulator. “Kickdown” and “TV” cables aren’t really the same thing.

What does the vacuum modulator on a Turbo 350 do?

The vacuum modulator is a vital component of automatic transmissions. It tells the transmission what kind of load is being put on it, allowing the transmission to react with the proper line pressures and shift points.

Can a vacuum line cause transmission problems?

What do a transmission modulator do?

When you drive an automatic transmission, the modulator valve is responsible for shifting gears. It senses intake manifold vacuum and shifts the transmission accordingly: When you press down on the gas pedal, the throttle plate opens and the vacuum is reduced.

Can a bad vacuum pump cause transmission issues?

Regarding the transmission, a bad vacuum pump would not cause the issue you are describing.