fass fuel system problems - Dodge Cummins Diesel Forum
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post #1 of 6 (permalink) Old 08-29-2008, 07:06 PM Thread Starter
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Angry fass fuel system problems

about a month ago i put on a fass 95 and everything worked great, then the other day i went to start my truck and i didn t hear the pump turn on. and then the check engine light came on. so i didnt start the truck and got out and played with the wiring. then i went to start it and the pump kicked in when i turned on the key. the truck ran fine and a drove it with the light on. then i shut it off and came back a while later and the pump kicked in and the light turned off. I thought everything was good. but now it did it again today. so i played with the relay and then it worked, but idk what to do to stop the problem.

o and another ? how do you get to see the codes when you turn on the key
thanks


07 qcsb white, 5.9 6spd 5"tbe, efi live,bhaf
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post #2 of 6 (permalink) Old 08-29-2008, 07:20 PM
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ECM controls the lift pump signal, if you had a dash light telling you there was an issue I'd bet it's truck related.... Not FASS pump
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post #3 of 6 (permalink) Old 08-29-2008, 08:25 PM Thread Starter
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ok how do you fix that and how do you do the ignition thing so that you can have the codes come up on the odometer

07 qcsb white, 5.9 6spd 5"tbe, efi live,bhaf
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post #4 of 6 (permalink) Old 08-29-2008, 08:28 PM
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Cycle the key three times to get codes. Off, on. Off, on. Off on.

okie

01, QC, 4x4, auto, Power puc, muff mia, SSI Steering Stabilizer, FASS 95, BHAF.
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post #5 of 6 (permalink) Old 08-29-2008, 08:51 PM Thread Starter
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ok
now if it is a problem with the ecm how would i fix it

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post #6 of 6 (permalink) Old 08-29-2008, 10:20 PM
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A light on the dashboard wouldn't be caused by the FASS. I'd checked any and all connections and make sure they are tight. If you want, throw a new relay in the FASS harness just to eliminate that.

2001 QC SB AT 4X4 p-pumped
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