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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,274
You said you havn't tried grounding the white wire on the overboost switch to see if the pumps run. That's easy and you have to do it to see if the speed relay under the driver seat is good and the overboost sensor works right.

It's a good idea to mount a male spade terminal to a grounded surface nearby the overboost switch so can pull the female spade terminal/whire wire off the overboost sensor and slide it onto it to check things and maybe save a tow charge.
Old 07-30-2010, 11:37 AM
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