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Old 02-06-2012, 10:23 PM   #1
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Default 8.1 stalling when taking off from a light

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 !!
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Old 02-06-2012, 10:30 PM   #2
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Welcome to the forum! Have you tried checking the fuel pressure, air filter, and vacuum lines for a vac leak?
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Old 02-06-2012, 10:34 PM   #3
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THANKS ! - changed air filter - no vaccum leaks and fuel pressure is good
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Old 02-07-2012, 07:31 AM   #4
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does it idle rough? alot of DBW engines are having issues with the carbon build up on the butterfly/tb
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Old 02-07-2012, 10:47 AM   #5
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does not run rough at all - even when it stalls it doesnt hesitate or run rough just shuts down
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