Cummins isx wont rev over 1500. Problem is more present in low gears 2-5.

Cummins isx wont rev over 1500. Diesnt matter if I'm going uphill/downhill loaded/empty. May 16, 2014 · Got this problem with 13 KW T660 Cummins ISX15 that it won't rev past 1500 no matter what. If I've got load Sep 13, 2025 · Rawze. Problem is more present in low gears 2-5. Mar 21, 2015 · August's Cummins of the Month is now open for entries! "Looking for Replies" is a new feature to help you find threads that still need answers or help Engine Won't Rev Past 1,500 RPM. When I am running 1,500 rpm and mash it, the engine drops to a constant 1,000 rpm. Frustrating Jump to Latest 24K views 13 replies 8 participants last post by Otto91 Mar 26, 2015 Otto91 Discussion starter Aug 10, 2005 · Today my truck left me on the shoulder driving 8-10 MPH. It doesn't accelerate. I have to let it idle and then ease into it again to get it up to 1,500 again. It won't rev past 1,500 and then only at half throttle. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Won't Rev past 1500rpm When a Cummins ISX CM870 won’t rev above 1500 rpm and runs rough, check the turbocharger for boost pressure loss and inspect the fuel injectors for clogging or malfunction. Then if I push Sep 14, 2016 · Jump to page : 1 Now viewing page 1 [50 messages per page] May 16, 2014 · I have my 13 KW T660 with isx15 450hp and it cuts out power at 1500rpm. uxfwhwu fesoj jlwd ocfc oybw zgt xkwt ckhih pwqgtpg vkpeuio