View Full Version : Detroit Diesel Engine dies at 90PSI ( 6V92 Turbo )

Newell Attack
11-06-2012, 07:40 PM
Ive got a coach w/6v92 turbo..it starts cold & dies @90psi...It will fire when u hold the starter...But basically fires up cold &quits @90psi...Help?


11-06-2012, 09:35 PM
A bit more information will help. What is showing 90 psi?

Have you checked the shut-off solenoid is in the run position on the governor. My coach with the same engine will run, just barely with the starter engaged if the governor is in the "stop" position.

77 coach

Newell Attack
11-06-2012, 09:43 PM

No, I have yet to check the shut-off solenoid is in the run position. I will do so now and report back.


11-06-2012, 09:46 PM
Just a wild guess, the shut off air solenoid is not working properly. Otherwise, a lot more info is needed to even begin to help you.

11-07-2012, 12:05 AM
I was thinking something very similar.
Try with the Block Heater turned on a few hours.
Make sure that the Fuel Filters are clean (replaced)
Make sure that the Air Filter is clean (replaced)

The Newell
11-07-2012, 05:04 PM
I agree, the air shut off solenoid isn't working,. check for power to the solenoid with key on. Do some minor checking and post your results this way we can better assist you.