vacuum modulator was disconnected , reconnected now shifts hard......

[Ertech]

hi guys.
I was replacing the AC drain and working on the driver side of the transmission. found a clear vacuum not connected . I looked around and saw the vacuum modulator not connected.I connected the vacuum to it and now the transmissions shifts real hard .
could my car have been adjusted with the vacuum modulator disconnected?
the cable adjustment is just for cold upshifts, that is the cable I adjusted when I purchased the car.

Thanks.
Erick

 

[nocfn]

Check to see if the vacuum modulator actually holds a vacuum. I would also verify that the line from the engine to the modulator isnt compromised - plugged with dirt, burn holes where it may have hit exhaust etc. If there were adjustments without the modulator connected to vacuum, then most likely there will be changes when it is operational meaning a check of vacuum integrity and everything working, most likely adjustments will be needed.

 

[gsxr]

Vacuum present will cause softer shifts, zero vacuum causes harder shifts. What you describe sounds backwards.

As nocfn mentioned above: make sure the vacuum tube connects to the proper location on the back of the intake manifold, that the tube+fittings are all intact, and also that the modulator holds vacuum.

The Bowden cable linkage will adjust shift points at all temps, not just cold.

 

[Ertech]

Vacuum present will cause softer shifts, zero vacuum causes harder shifts. What you describe sounds backwards.

As nocfn mentioned above: make sure the vacuum tube connects to the proper location on the back of the intake manifold, that the tube+fittings are all intact, and also that the modulator holds vacuum.

The Bowden cable linkage will adjust shift points at all temps, not just cold.

You are so right. It was disconnected again
Put it back together and all perfect moi
Thanks again

 

[nocfn]

A happy outcome is preferred here. Take $20 out of petty cash!