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Yes thats the delay valve,don't know the proper name or number.Took mine down to the dealer,he had some trouble finding me a new one.He had there driver take it to a large GM wharehouse about 40 miles to it.But it stuck in one position,I think you could by pass it for a test to see if it runs better. It just keeps advance off it warm up.Do you have good thermostat.Needs to get up to temp.I think it turns on vacuum on one port when it turns off vacuum to other.Did you install new hoses?maybe crossed up. Not sure but think vacuum source was center hose.Good Luck MIKE |
RV and bus conversion info since 1996.
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