Bad MAP sensor or Bad Air intake temp sensor?

[Cummins Coal]

Hi I was wondering if you could give me any information on an issue I'm having? In the mourning while driving my heater grid light will come on along with 10 beeping noises the light stays on for about a minute then goes off..I notice while the light is on my boost levels won't go past 50lbs of boost until light goes off I do have compound turbos I have replaced my injectors with 50hp bosh injectors from exergy in June. I just want to know if it could be a bad air intake sensor by the air filter or a bad map sensor? I have no check engine lights coming on and it only does it once in the mourning but the temp outside was 82 degrees this mourning Thanks for your time and any info.

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[9mgcb81]

5.9?

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[Cummins Coal]

yes 2006 5.9 cummins

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[9mgcb81]

Have you tried cleaning your sensors

With it being that warm out. Next time you start the truck cold of the light is on don't wait for the grid light to go off. Just start it up. See if that changes anything

My 09 has the grid deleted and getting cooler in the mornings (under 55) it tries to turn the heater on. I've found that letting everything power up and starting before the grid heater light goes off stops me from having the DTC/service light coming on

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[Cummins Coal]

Ok I will try that thanks for your help....

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[Polaraco]

Ok I will try that thanks for your help....

I agree. If there are no codes, chances are it's dirty. But take note, they can fall out of spec and not fail. Usually a dead seanor will throw a code.

Do us a favor. So we don't have to drag out our crystal ball, please give the year, mods an milage in the beginning. It saves time

Thanks

The old grouch

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[Cummins Coal]

I agree. If there are no codes, chances are it's dirty. But take note, they can fall out of spec and not fail. Usually a dead seanor will throw a code.

Do us a favor. So we don't have to drag out our crystal ball, please give the year, mods an milage in the beginning. It saves time

Thanks

The old grouch

My truck is a 2006 5.9 cummins mileage 138,000...it has 50hp Bosch injectors,compound turbo system, and smarty s06..... Thanks for your response


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