Turbo Intermittent

What engine?

 

I guess its 14l Detroit and time to change the vpod..

 

I have detroit 12.7 and mine was doing the same thing, eventually it threw a code and cut engine power back to 40% ... the culprit was a bad turbo boost sensor. Changed it out and runs great now, symptom eliminated. I was lucky I was within a couple hours to a FL dealer who had the part I needed AND there were no big climbs in front of me. I was lucky to keep it above 50 mph (68 limit) and limp it to the shop. I had the bully dog and that's how I figured it out.

 

if engine has faulty boost sensor there must be active or inactive code. if vpod is malfunctioning you may have code 39 or may not. Its more likely vpod or vpod air supply pressure

 

Mine did not show any inactive codes before the sensor quit. I could see the boost pressure change at random while I could watch (on bd hdgt) throttle position at a steady number. It eventually blew and felt like a hose had come off the turbo or air to air. The CEL could not be overriden.

 

--PWM #3 sht to batt +\- pin E-1 (flash code 63). FMI 3; count 16 <--broken egr valve connector touching ground
--EGR leak boost power (flash code 39) FMI 2; count 126 it could be 146/2 <--VNT Vanes not responding - Boost Power or 147/2EGR leak - Boost Power .
Again I think vpod is faulty. vpod output pressure test must be done to verify.

Copyright © Detroit Diesel Corporation 2004 - All information subject to change without notification

Copyright © Detroit Diesel Corporation 2004 - All information subject to change without notification