Join Date: May 2008
Location: Leesburg, VA
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When you said keep on the gas it almost sounded like a throttle positioning sensor of some kind, but those usually leave you nailing the pedal to the floor.
Assuming you have oil pressure, it could be the sensor is bad and sending it to a limp mode of some kind. If you rule out computer, then you're left with basic fuel and air of course. Vaccuum, fuel pressure, etc. Like bad fuel pump (I did have one pump reduce pressure at load instead of dieing like the others did - very hard to diagnose), vacuum leak, etc. I've rarely had an OBDI or post with a timing issue? Throttle is compensating for bad balance in some way, mere act of opening throttle could have computer dosing extra fuel, or the other way around.
Does sound like code scanner is your best bet right now though.
Early '99 7.3L F-350 SRW SC LB
DP Tuner (NS,Stock,HI 1200, DT,40T,80T,80E,120R,140A), Coolant Filter, External Trans Filter, 6.0L Cooler, JW Stage I Trans, Dipricol Optix Gauges, AFE Stage II, MBRP 4" Turbo Back, ProComp 4" Lift Front, Skyjacker 6" Rear Leafs w/ 1" Block, 16x8 MT Classic II's
Last edited by BRS; 02-02-2009 at 03:32 PM.