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Power Strokes
7.3 Tech
Surging and bucking while driving
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[QUOTE="firehunter, post: 1488002, member: 1162"] I have had a similar condition on and off for the last 18 months or so. I feel it most when keeping the throttle steady (light throttle) and it feels like the engine is switching back and forth between two different tunes. Use cruise control and it is smooth. I switched out my grey CPS for another grey CPS and the same thing came back in just a few weeks. I was researching CPS in general lately since I have used my last black one and noticed on a website that the Dark Blue CPS was called for in OBS trucks. I have a SD but with A codes in it and figured what the heck? The grey ones work fine in my wife's SD with split shots in it, try the dark blue for my truck with singles? MAGIC. Truck has never run so smooth. Fires up consistently and predictably. Jumpy running is no more. EGT's are down, smoke is down, fuel mileage is up. Towing is noticeably easier and even shifting is smoother. I have had the dark blue CPS in there for a few weeks now and am over the moon happy with it. I have gone so far as to do compressions tests and pull the injectors to inspect...and the fix was a CPS...just like in the first response in this thread. [/QUOTE]
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Surging and bucking while driving
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