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Message: [QUOTE="WoodBoy, post: 666729, member: 890"] Alright guys my TC is locking 4 hi and lo normally, the vacuum pump engages normally and runs for a while but the hubs aint locking in. I know its a leak or solenoid. First question, how do I test the solenoid? I pulled the two lines off of it and the vacuum pump kicks on. I cover the line that connects to the bottom of the solenoid and the pump will kick off, so what I done was connect that line back up, but left the top one off, I dont feel any suction on the top coming out of the solenoid which would be what runs to the hubs. Does this tell me it is bad? [/QUOTE]

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