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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2784
Experience:  ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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Working on a 2007 60 series 14L Detriot freigtiner Columbia

Customer Question

Working on a 2007 60 series 14L Detriot freigtiner Columbia engine brake does not work
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Jeremy replied 1 year ago.

My name is ***** ***** I will assist you.

Did it just suddenly quit or were you having some other issues with it prior? Have you checked the basics like the power coming from the switch and/or hooked up the DDDL program to verify that the switch is showing engaged, no clutch activation signal or brake activation signal is seen on the Service Link or DDDL (engine) programs?

If all is good, then the solenoid is most likely bad in the engine. You will need to remove the valve cover and replace the solenoid that turns the engine brake on and off.

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Jeremy

Customer: replied 1 year ago.
Hello sir I guess the fuse was out and I also opened up top cover and activated them directly while on idle and they do activate but not strong at all like if they are not on at all I haven't conected the computer too it I didint get a chance to
Expert:  Jeremy replied 1 year ago.

If they work and are weak, then that is just a valve adjustment need. I would have an overhead done on the truck and it will resolve that issue for you.