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Thread: C12 CAT surging issues

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    Full Access Member cbarm's Avatar
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    Default C12 CAT surging issues


    Hey guys, I have a 2000 C12 that has started surging/bucking really bad at times right in between about 10 and 20 lbs of boost. I have new fuel filters and air filter and run quality fuel. Any ideas??
    Once a Ford Owner, always a Ford owner...I've had lots

    '94 F350 Crewcab DRW 7.3 PSD, ZF5, 4.10 diff, 220K miles on the clock *NEW TO ME*
    '89 F350 Crewcab DRW 7.3 w/ ATS turbo, ZF5, 4.10 diff, 280K miles on the clock
    '90 F350 Crewcab DRW *4x4* w/ *PSD*, ZF5, 3.73 diffs, 115K miles on the clock - One rare beast!
    '11 GMC Sierra 1500 4.8 auto 4x4...worse fuel mileage then my 1 tons...never buy a gasser again! **SOLD**

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    Full Access Member chvycmnslvr68's Avatar
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    Default

    I would recommend checking your primary fuel pressure ... it sounds like it may be unstable when you are using quite a bit of fuel ... also check for air in fuel .. are you having any problems with start ups... if all that checks out check the camshaft and crankshaft position sensors ... these can cause a number of speratic power problems ...
    1991 Chevy Crew Cab Dually 4X4: '93 5.9 Cummins w/40+ injectors and pump all the way up, w/getrag 5-speed and 205 T-case:3.73 gears (soon to either have a twin turbo setup or a P/S turbo)

    1992 Toyota Four Runner SR5 4X4: 2.2 liter Isuzu diesel IDI w/custom added turbo

    1982 Chevy 4X4 3/4 ton: 6.2 diesel w/th350 and 205t-case and 4.10 gears

    1985 Chevy 4X4 3/4 ton: ( no motor or tranny at this time) Want to put a 4BT in this one ... Detroit locker in rear and solid POSI in front (kinda hard to steer in 4x4)but will go anywhere i point it ... with a 6" lift and 35" tires (had a 6.2 and 700R4)

    1966 Chevelle Malibu :two tone purple ( also no motor or tranny at this time) I want to put a 4BT in this as well ...

    I have personaly built everyone of these..... all are my babies .... and all are customized

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