| trans. modulator questions [message #80356] |
Mon, 12 April 2010 17:52  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma:
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Senior Member |
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Greetings GMC'ers. It's been a long wet miserable winter but it's time to try to get some use from the old girl.
The coach does not shift up.
I followed the lines from the modulator, it goes to two places on the manifold exactly like the GMC except my modulator is considerably larger than the one on the 74 GMC, (which is still here Rich, call me)
Like the GMC, there are wires going into the trans near the modulator. What do they do?
As it was shifting perfectly on the 200 miles drive home, and then stopped shifting after i messed with the manifolds and other stuff on the engine, my troubleshooting leads me to something i touched.
I was hoping to find an obvious disconnected hose, but would smaller vac leaks alone cause it to fail?
Thanks
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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