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 2010 IC Maxxforce Fuel Filter Light
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aaronwilmoth80911
Senior Member

122 Posts

Posted - 07/03/2014 :  05:21:40 AM  Show Profile  Visit aaronwilmoth80911's Homepage  Reply with Quote
We've had a few of our 2010 IC buses with the Maxxforce engine have the fuel filter light come on. Sometimes, we replace the fuel filter and it never comes back, other times, we replace the fuel filter and it comes back on within about 6 months or so. We had one that did it, changed the filter and no luck. Went to dealer under warranty and has never been right since. It has a terrible hard start issue, and has gotten to the point of running like s**t for about the first 10 minutes of driving. Dealership says there is nothing wrong and keeps giving it back.

Anyone else have issues like this? What was your solution?

bus a groove
Senior Member

70 Posts

Posted - 07/03/2014 :  06:15:02 AM  Show Profile  Reply with Quote
Are you cleaning the screen on the pump before the filter? When that screen gets plugged up you will get low power and an occasional check engine light. I have noticed with the Maxxforce in general they do not run well until they are warmed up.
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aaronwilmoth80911
Senior Member

122 Posts

Posted - 07/03/2014 :  09:03:21 AM  Show Profile  Visit aaronwilmoth80911's Homepage  Reply with Quote
Yes, screens are getting cleaned with every fuel filter service. Out of the 10 that we have, 3 have had fuel filter lights come on, but only the one has become a real problem. When this certain one has not warmed up, it sounds like it is down at least one cylinder.
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Cal Mc
Advanced Member

247 Posts

Posted - 07/05/2014 :  1:24:31 PM  Show Profile  Visit Cal Mc's Homepage  Reply with Quote
We have had some problems with transfer pumps. Put 8 psi air pressure into the fuel tank (NO MORE THAN 8 PSI) of a known problem unit. If the cold miss disappears, shut the unit down and check for fuel leaks.
If it leaks fuel out it will leak air in when the tank is not under pressure. If you have no leaks and your filters and screens are clean and the miss went away the is a fair bet you have a failing transfer pump. Watch for small coil spring pieces in the bottom of the filter bowel (from fuel check valves) We have 15 IC buses 2010 -2012
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aaronwilmoth80911
Senior Member

122 Posts

Posted - 07/07/2014 :  05:17:24 AM  Show Profile  Visit aaronwilmoth80911's Homepage  Reply with Quote
Thanks for the tip. We will look into this.
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