Exhaust brake not working
Cummins 400 isl 2006 travel supreme. About 90,000 miles. Need some help! Thanks
Forum Discussion
If the transmission shift pad does not change from "6" when you engage the exhaust brake, it is not working. That is one of the first step. When the brake was working for you, what was the pre-select gear/what gear did your shift pad change to when you engaged the brake?
Verify that your throttle position sensor is closing when you get off the throttle, because any throttle will cause the exhaust brake to not engage.
Again, a little confused as the 2006 Cummins 400 HP was the ISL, not ISC. Have you modified your ISC for more HP?
Verify that your throttle position sensor is closing when you get off the throttle, because any throttle will cause the exhaust brake to not engage.
Again, a little confused as the 2006 Cummins 400 HP was the ISL, not ISC. Have you modified your ISC for more HP?
