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:confused013:Has anyone had any problems with their PacBrake sticking closed causing total lose of power and a lot of black smoke being produced
 

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check the solinoid if it stayes open it would cause it to stay on that or the butterfly is getting hung up
 

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Mopar1973Man.Com
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I had the same thing on my Jacobs brake. It was the electric valve that controls the vacuum. It was sticking on the vacuum side pulling the jake shut all the time. Since mine was under warranty I had the dealer replace it. But since yours most likely isn't under warranty I would use a blast of WD40 to lube it up and blow it out with compressed air to clean it up... :thumbsup:
 
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