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On my '81 there are two vacuum switches in the thermostat housing, both use a double vacuum line connector...at least that is what I will call them....these plug onto the two switches. One of mine is split and I have been looking for replacements....anyone know where I can get them at?
Is the sensor or vacuum connector split? If the sensor connections are bad, I believe Ecklers has them. I am also finding out that Pep Boys and Advance have access to most 81 parts.
If the vac line connector is the issue.......I noticed a nice assortment of vacuum ends and hard plastic line very simular to OE GM at Pep Boys. You would have to cut the bad ones off and glue the new ones one....should be a piece of cake.