rpms at idle speed up to 760 and hot exhaust lite
07-24-2019, (Subject: rpms at idle speed up to 760 and hot exhaust lite ) 
Post: #5
RE: rpms at idle speed up to 760 and hot exhaust lite
the HET lamp is supposed to come on when it is performing passive (going down the road) regen, and you slow down below highway speeds. it is simply telling you not to park the truck in the grass, so nothing catches fire.


use insite to look at the regen history, post some screen shots of it for a second opinion.

btw: a 2014 truck would have a CM2350 model ISX, not an 870.


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RE: rpms at idle speed up to 760 and hot exhaust lite - Rawze - 07-24-2019



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