While traveling to work today, the old hog took a stumble.

At first I thought it was from the ice, then it happened again. That time I got a SES light. Also, it did not repeat the stumble the last 35 miles of travel. Upon arrival at work, I shut the old hog down and then restarted. No SES light. Upon checking the codes, no codes.

Does this sound like another CPS failure?

I just replaced the last one (IH instead of Ford) three months ago.

 

I can't tell you it doesn't sound like it, so carry a spare. and a 10mm wrench (is better than walking).

Mine only stumbled when it was failing.

I'm sure others with far more knowledge will chime in with different causes.

 

It did not stumble again until I put about 65 more miles on it. Just as I got off the interstate, it stumbled and then upon climbing the hill before my house, a stumble and another SES light. In the drive, I turn it off and restarted, The SES was gone.

I am wondering if maybe the fuel filter. May have picked up some trash at the EXXON and the up and down hills may be causing it to move around.

 

I found out one thing in trying to solve this problem. Service your own vehicle. Went out on a hunch and decided to change the fuel filter. What a pain. Removed the top, pulled the filter and found all sorts of trash floating around. Also, the idiot at the stealership forgot to put the lower gasket on the filter. Cleaned the bowl, installed a new filter with both gaskets, and just for safe measures, topped the bowl out with Power Clean.

upon letting it warm up, I took it for a drive. It appears that a definate power increase is there. Now to cross my fingers and hope I solved the problem.

Now for some questions. I know that the lower gasket seals the outer filter material from the inner. I am going to assume that the outer material will not let water pass.

Is this correct?

And if so, with the missing gasket, is there a possibility of injector damage?

Any suggetions for cleaning the fuel system?

I did notice a lot of fuel (the old outer gasket appeared to be leaking) and crude in the valley. This was cleaned with a low pressure wash. I am going to guess that this was the fuel smell I was getting in the cab.

Think I need to make a call to the stealership and voice a complaint.

 

Just went thru the same thing. Stumble randomly...then it shut off once at a stop light, then while driving about 30 mph. Got a cps from powerstroke.com for $108 delivered. Installed in 15 minutes. I'm not saying you may not also have a fuel problem but if cleaning up the mess left by the mechanic doesn't solve it, it's probably the cps.

 

I took the old hog out this evening and just dogged the daylights out of it. Burned up a half of tank of fuel.

No stumbles and not an SES light in sight. It seemed to run a lot better. The rattle was quieter.

I did notice a very slight miss under hard acceleration, but no codes. I guess #8 injector is starving a little bit. Time to order the HPX line and get it in.

 

I'm glad to hear the stumble is gone.

Oh yeah I'd dog the Stealership HARD. For the money they charge, incompetence should not exist. Hopefully no chunks made it to the injectors. You may want to start a new thread about that.