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New Member

6 Posts

Posted - 10/30/2013 :  7:18:24 PM  Show Profile  Visit rockbus's Homepage  Reply with Quote
I have 3,2005 IC DT466 EGR Engines, Fuel filter light always coming on. Replaced filter and fuel pump, I even changed primer pump and pressure regulator. Fuel pressure is 50-55 psi. Has anyone had this issue, and what did you find works!

Senior Member

United States
170 Posts

Posted - 10/31/2013 :  04:21:41 AM  Show Profile  Visit willism's Homepage  Reply with Quote
Most the time the fuel pressure regulator is the issue ive found but if you have a heater on the bottom cover check that sometimes you get a pinhole in the plastic by the plug.
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New Member

7 Posts

Posted - 11/14/2013 :  07:29:16 AM  Show Profile  Visit bbassett's Homepage  Reply with Quote

What brand of filters do you use? we use hastings and are having the same problem. i am thinking about changing brands.
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Top Member

794 Posts

Posted - 11/14/2013 :  12:57:37 PM  Show Profile  Reply with Quote
Have you done any diagnostics on the sender that's on the backside of the filter assembly? We occasionally have had one of those out of range. P/N 1839415C91 used for EOP and EFP.

Edited by - Mechan1c on 11/14/2013 3:14:16 PM
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New Member

7 Posts

Posted - 11/15/2013 :  06:03:57 AM  Show Profile  Visit bbassett's Homepage  Reply with Quote
No i haven't checked that yet, we have about 4 buses with the same problem and our admin wanbts us to install a racor filter but there isn't a proper way to splice the suction line that i have found. I've changed everything else on the fuel system on a couple of the buses also. I will check the sensor today on oneof them and see what i find.

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Active Member

21 Posts

Posted - 12/20/2013 :  09:09:38 AM  Show Profile  Visit rcbusman's Homepage  Reply with Quote
Our international dealer suggusted we let them reprogram our busses to set fuel filter changes to 999,999 miles between changes which we will never see
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