WebJun 8, 2011 · Cummins ISX, Slow boost response, High exhaust temp, will reach 1100 degrees in short pull empty, no codes, Black Smoke Ask an Expert Car Questions Heavy Equipment Repair Cummins ISX, Slow boost response, High exhaust temp..parked..throttle… , Journeyman sevn103, Journeyman 275 Satisfied Customers … WebMay 16, 2024 · Cory A Bobtail Member. I'm new to this thing so y'all bear with me. i just bought a 2011 Peterbilt 389 with an ISX CM2250. the engine was rebuilt 2 years ago and …
Cummins ISL 400hp -Losing Power On Uphill - FMCA RV Forums
WebDec 1, 2024 · CUMMINS ISX. At the traffic light I put in gear and pushed the gas pedal to move. no response, put it in neutral. still no response. the truck moved at the speed of low gear and idle RPM. Eventually I passed the traffic light and pulled over. I turned the engine off. and backed on after few moments. everything was OK. WebJul 21, 2012 · The only way to spot if it's bad is as you are pressing the pedal down with the ohmmeter hooked up, you will see the dead spot as a quick jump in the needle. It will go open and then come right back. Something you will NEVER see with a digital meter. You can also use it for testing for bad wiring harnesses and connectors. Same thing. inch foot to mm
6 Symptoms of a Boost Leak and How to Find it - Mechanic Base
WebFeb 26, 2014 · At 2600 a 430/450 Cummins should have at least 30 PSI at the intake under load, should start making boost at about 1400, and getting like 10 to 15 pounds at 1600. A cheap gauge to a pipe plug in the intake will give you these readings. From the intake to the pump is a small tube that carries air to the air/ fuel control (AFC). make sure it's in ... WebFeb 13, 2024 · It only makes that sound under load and acceleration, correct ? Yes. If I slowly accelerate, I dont hear it. If I take off from a stop I hear it. I can hear the "normal" diesel rattle & this knocking, this noise isnt as deep as the "normal". If the truck just sits and idles, I can rev it up, or put it in idle up mode, and it doesnt make the noise. WebAug 16, 2015 · It was doing fine on less steep hills, but slowed to 30-35 mph on the ones around Branson. These are not like we are crossing the Rockies. Just wondering if anyone has any ideas. Did you down shift to keep your rpm up? There is no coach I am aware of that will climb every hill without slowing down. On steep hills you will slow down. inch foot pounds to foot pounds