Running Rough
 

I have a 7.3L, 2000, PSD. I tried to start her-up this morning (-13 degrees) and on the 5th attempt she fired-up. Let her idle for 15 minutes and then headed down the road. About a mile out she started couching and splitting, losing power, then died. I waited a couple of minutes and she started but ran real rough, was able to drive about 50 yards and then she died, no power either. I let her set for about one hour and she fired right up, drove her home and let her idle. Idles real rough and then dies. Any suggestions? 3000 miles earlier I had the glow plugs changed, replaced one injector, flushed the coolant system and replaced both batteries, plus I run a fuel injector cleaner every other tank of fuel. Could this be a CPS?

Welcome to the forum qamikeb.
It's possible, but just as likely your fuel is jelled at that temperature. I would try some fuel additive first.

Could be the cps. But the running rough part doesn't sound right. Everything I have read and experienced with a bad cps is that the truck just dies.

But with this cold temp, that could be causing the mixed symptom. Hang in there, someone more knowledgeable will come along soon!

When my CPS went...it did a very similar action. Just while cruising started to cough and spit...then it recovered itself for a bit...then did it again....and recovered...then died. Started back up...drove a little bit....and thenfinally coughed and died and would not start. Sounds like CPS to me....or could be CPS i should say.

change your fuel filter, add a lot of anti gel and that should fix you up. Also plug that bad boy in when it is that cold.

Thank's for the quick responses, I did start by replacing the CPS, she started right up and ran for about 1/2 mile then started coughing and splitting again. I then drained the fuel off the filter and took the filter out and shook off all the fuel I could, replaced it and she fired up, still running great. Before the day is out I'll replace the fuel filter with a new one. You would think that, that filter would have lasted longer than 3000 miles. Anyway she's running great now and I ended up with a day off from work.

Thanks again,
Mike

Do not forget the cold weather anti gel. That is the source of your problem. And plug it in about 2 hours before you start up in the morning

yes, add the appropriate amount of winter-blend diesel fuel additive. it sounds like your fuel has jelled and shaking the filter out will just band-aid the jelling problem until it clogs up again. the warm hand (warmer then jelling point) allowed most of it to turn back into #2 liquid.

Strokin_it ....What brand of diesel fuel additive do you recommend...or what are some that work good and where to buy them from.

Thanks
Tony

Any truck stop has them, most auto parts stores, etc. I personally like diesel kleen, from power service. Runs about 15 bucks for a 96 oz bottle. Will last for 10 fill ups in your tank. Get the white bottle for the winter, grey for the summer.