Author Topic: C12 Turbo Boost Question  (Read 5760 times)

steve zannella

  • Guest
C12 Turbo Boost Question
« on: January 31, 2015, 09:55:41 PM »
I recently noticed my turbo boost jumps around a lot when climbing grades. The Alladin read out bounces from 20 to 38 pressure when holding throttle steady. Is this normal? I'm not concerned about power as the coach seems to pull without hesitation.


Lee Welbanks

  • Guest
Re: C12 Turbo Boost Question
« Reply #1 on: January 31, 2015, 10:32:37 PM »
No your boost pressure should not be jumping around, sounds like a bad connection.

Edward Buker

  • Guest
Re: C12 Turbo Boost Question
« Reply #2 on: February 01, 2015, 02:01:24 AM »
Or a bad sensor, the boost when the turbo spins up is somewhat of a slow responder pressure wise.

Later Ed

Gerald Farris

  • Guest
Re: C12 Turbo Boost Question
« Reply #3 on: February 01, 2015, 03:42:48 AM »
Steve,
Lee and Ed are right when they are stating that your problem is electrical and not mechanical. The way that the engine intake is designed, it makes it almost impossible for the boost pressure to jump back and forth between 20 PSI and 38 PSI. If it is not something obvious like a corroded connection at the sensor, you will probably need to take it to Cat for a diagnosis.

Gerald   

steve zannella

  • Guest
Re: C12 Turbo Boost Question
« Reply #4 on: February 01, 2015, 04:03:24 AM »
Thanks, I'll take the coach to a service center and have them locate the electrical problem.

Steve