Quote:
Originally Posted by LantanaTX
Correction, the vacuum pump does not run full time. It is cycling about every 10 seconds. Is this acceptable or still a leak? The electrical connector that was not connected to anything was under the plenum just rear of the two very large rubber hoses in the center. It is a two wire connector which is water proof like all the others. It is coming out of a harness. I found nothing for it to connect to. I think I remember one the wires to be black/pink.
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I don't know about the electric deal - but I found this in the "solutions" section:
Marc suggests
Evaluating the tightness of the secondary vacuum connections. I like to use the electric pump’s cycle time as an indicator. The pump is calibrated to turn off at 12” Hg. vacuum. The actuators require 6” Hg. vacuum to fully retract. Therefore, if the pump cycles off, there is plenty of margin in the seal of vacuum system for reliable secondary throttle operation. One second of off time is enough to assure normal operation of the secondaries. If the pump stays off longer, it indicates that the system has an extra margin of vacuum tightness. A lot of off time, indicates that the system has a good margin of vacuum tightness. An extra tight vacuum system does not make the engine perform any better than one that allows the pump to stay off for one second.