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8.1 stalling problem when pulling out from stop

greggn3

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greggn3 New Member

greggn3

Posted
Posted

I have an 08 c5500 with an 8.1 Gas engine. When the truck is cold it runs fine but once it warms up when you take off from a stop the truck stalls. If you crank it, it will start right back up and be ok for a few min but then if you slow down and take off again it will stall. It does it when towing a load or empty.

 

It has not caused a check engine light to come on. Scanned it but there are no hidden codes either.

 

We have put in a new fuel filter which did not help.

We put in a new crank position sensor but still have the same problem.

 

Any help is much appreciated !!

ATMINF Enthusiast

ATMINF

Posted
Posted

I am pretty sure the 8.1 L had aproblem with their crank position sensor going bad and causing the problem you discribe.

  • 1 month later...
testdrive Enthusiast

testdrive

Posted
Posted

Early 8.1L had trouble with the crank sensor. 2008 might have a bad one but not common.

I would go with the fuel filter, because it should clog up twice as fast as most rigs because of huge amount of fuel that has gone through it..

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