Truck#1 Posted October 8, 2007 Share Posted October 8, 2007 My Jake won't switch to the "high" setting. I can turn it off and works good in low but when i switch to high it stays on the low setting. I replaced the dash switch (with no change)but don't know what else to look at. Any ideas? Thanks in advance.Rob W. Quote Link to comment https://www.bigmacktrucks.com/topic/2945-jake-question/ Share on other sites More sharing options...
Freightrain Posted October 8, 2007 Share Posted October 8, 2007 Start to check voltage to each jake. Sounds like one is not functioning or the the solenoid is out.A buddy had problems with a Cat with jakes, found out it was a wire thru the firewall that had cut, thus not firing all jakes giving him only LOW setting. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/2945-jake-question/#findComment-14376 Share on other sites More sharing options...
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