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627 6/12/2002 9:18:20 AM 6/12/2002 John Clark jvclark02@cs.com jake brake I have had to repair my Jake three times and in each case the problem was electrical rather than mechanical. Have someone activate the switch (key on, engine off) while you put your ear close to the valve covers (no background noise) If you here the slight click of a solenoid activating inside the valve cover (you may need your wife to do this if your hearing is bad like mine) than you need to take it to a shop because the solenoids are working. If no click, start trouble shooting the 12V wire that comes from the dash to the engine. In one case it was broken where it entered the valve cover, in another it was the switch that was located on the transmission, and in the third it was the idle switch on the throttle linkage, (which must be activated before the jake will work).