ISX 600 Engine brake

[Waterloo]

(05-30-2016 )mHolc Wrote:  

(05-30-2016 )Waterloo Wrote:  Pop the top on the motor, odds are the Jake control sensors, and or its wire harness is shot. Replace that and you should be golden.

Should this be working as soon as u let off throttle? Or that delay is not normal. Ive asked a few other guys but they had 485s and it was a Pete, but they say there is no delay.
I will check the things u mentioned. Thank you!

Wow! You got me there! Mine DID delay on my 2008 ProStar, 600 hp ISX... I just did the in frame and when we popped the top the wire harness was shot, along with one of the sensors, it was toast. And I hate to say, I tried the Jake once, do not recall if it still had the delay or not. I rarely if ever use my Jake, I just know it works. But, I would still inspect the harness and the two sensors. I will bet you a dollar that one of the harness sensors or connections is shot, if not the harness cable itself. Mine was ugly, and I was surprised the Jake even functioned when I saw what was left of the harness.