SRD Backhoe Posted January 27, 2016 Share Posted January 27, 2016 Hey out there, first time on this site. looking for some idea's ? i'm all outta the simple stuff. I run a 2002 CH 600 with the 460. Recently i have a very weak and periodically on and off jake brake? My shut down alarm comes on when tugging up a hill or against wind but all temps and pressures are good ? Also electric light will come on every now and then. I've checked my clutch end switch, jake relay behind glove box, Im asuming the switch on the dash for the jakes is working because the brake will flutter on a couple cylinders at around 1200-1400 RPM. Also swapped out a switch from a light, same effect. I cant get the backyard mech. codes from the cruise button trick cause all alarms are off as soon as you back of the throttle for a while. Was hoping to find some obvious, worn wire some thing ? If some one has a place i can start would be appreciatted. Quote Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/ Share on other sites More sharing options...
theakerstwo Posted January 27, 2016 Share Posted January 27, 2016 Have someone read the ecm for inactive codes.If it had a active code it will store it as inactive intill it is deleted.Other wise your only guessing what the problem is. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/#findComment-321913 Share on other sites More sharing options...
wilbur Posted January 28, 2016 Share Posted January 28, 2016 I once had the wire on the solenoid on one head come loose that made the Jake flutter and sometimes not work at all. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/#findComment-321984 Share on other sites More sharing options...
SRD Backhoe Posted January 28, 2016 Author Share Posted January 28, 2016 I jumped out the censor for the coolant level this morning, and will run the day see if my shut down warning comes on? Will put me on target for that problem. A friend recommended to pressure test the coolant system if that doesnt work. Thanks wilbur i think i got something like that going on ? before i pull the valve covers, do you know what kinda voltage I should have at the wire to the heads at all switch possitions and what kinda resistance there should be on the jake stud in the head to ground? I'm not sure i eliminated the switch being out of the problem, I have 12.7V at the wire for the jakes at the head no matter the switch possition(bad Switch?). And theres continuity from the stud that goes through the head to the jakes to ground 11 ohmes? Somthing shorted or is this just resistance from the solenoid? Thanks again Quote Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/#findComment-322001 Share on other sites More sharing options...
wilbur Posted January 28, 2016 Share Posted January 28, 2016 You should have whatever volts are in the battery at the head. The switch doesn't regulate voltage it just sends it to one head on low and both heads on hi. There should be resistance at the head {not sure how much} but the solenoid is basically a resistor. Its a coil that makes it a magnet. Quote Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/#findComment-322069 Share on other sites More sharing options...
Keffer inc Posted January 30, 2016 Share Posted January 30, 2016 I would think it is a bad dash switch if you get voltage regardless of the switch position (Off). My switch broke once, in the off position, the jakes were actually on. unless I tried to switch to high, then it may work or not. The switch was obviously busted though just by feeling how it moved. I would try a new switch first if you get power at the heads even though the switch is turned off. Quote Link to comment https://www.bigmacktrucks.com/topic/43743-no-jakes-engine-shut-down-electric-warning/#findComment-322297 Share on other sites More sharing options...
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