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Discussion Starter #1
A friend of mine has a 99 F250 Super Duty manual tranny with approx 80,000 miles. The truck idles fine, but when you go down the road, the truck will buck one time, and the SES light will come on. At this time It starts bucking and surging, trying to run, but the more gas you give it, the more it smokes, but it makes it run worse. If you back off, the thing will cut off. Sometimes it will crank back up in a minute, but sometimes it takes 5-10 minutes. It's a hard crank. At this point, it starts to run good for 5 miles or so, then it starts doing it again. Sometimes the SES light stays on, and sometimes it will come on, then go off on Its own.
He took the truck to Auto Zone to have the codes read, and they said it showed no codes, (which it obviously should since the SES light had been on). He replaced the fuel filter about 3 weeks ago, but drove it probably 200 miles since that with no problems. The problem, however, was nonexistant before the fuel filter swap. Does this sound like the infamous CPS??? Anyone have any experience with this problem?? I appreciate it!---Dusty
 

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Discussion Starter #2
bump
 

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CPS Time

Sounds like a CPS to me, my dad has a '99 that did the samething, ford wanted to put an injection pump on it, but we changed the fuel filter and CPS, that was 8000 miles ago, and he hasn't had a problem since. My dad bought the stuff off ebay for almost half of what ford wanted.

Rob
 

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did you ask this in the ford power stroke section?you would probably get more answers there.
 

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Discussion Starter #5
yes
 
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