2002 7.3 Powerstroke Dies and restart, acks up more in wet Conditions.

[Strokin on a Ritz]

I have a 02 F250 it will start up fine even in cold weather without needing a plug to stay warm.

While driving at slower speeds it will die, doesnt matter under load or not, while at highway speeds (Above Aprox 35mph) it will hiccup instead of die and flash check engine light. Has always restarted.

I have replaced the CPS, everything seemed fine, but living in Olympia Wa, until the next rainy day. Does the same thing. Dies or hiccups but always restarts.

Got CPS from NAPA. How often do they come bad straight out of box?
What else might this be? Ive heard Crank Shaft sensor, IPR,.
even bad fuel tank sock

I have had it coded even with the engine light on and no codes present.

I have checked the harnesses and pluggs all over the engine compartment nothing noticably wet or broken. Where are the problem areas and maybe im just over looking?

I have even heard bad ignition switch? Just trying to fix while keeping cost down only averaging 2.5 days a week making bills but not a lot extra.

Any thoughts, comments or ideas greatly appreciated!!!

[NoRalPh]

Read through this,,,, ->Stumbles when it rains??

The CPS is actually your Crank Shaft Sensor.

The CPS and the wiper motor seem to be interacting for people sometimes, next time you're having trouble see if turning off the wipers solves it (if it only happens in the rain).

I'm pretty sure you have codes present if the CEL came on. What are you using to retrieve codes (it takes a special scanner to read our codes, AutoZone, PepBoys, or one of those cheap handhelds are No Good) I think a good scan might point you in the right direction...

You can look at the IPR to be sure it's connected tightly or the nuts not loose, you can also check the ICP for the presents of oil in the connector that might be leaking through it (means it's failing) before you get your scan, but, the scan will be the ultimate answer

You could also try and simply unplug the ICP next time it's happening to see if it goes away (the PCM will default to a "limp" setting if unplugged)

[frttrain]

I am having the same problem. I have a Gennis 4000 scan tool and no codes. Had the scan tool plugged in when the light came on and it said no comm with PCM running on memory. I think it is a PCM problem and plan on sending my PCM out for testing in the next few days. I bought another truck that would not start becauce the GPR had no ground and would not fire the plugs. I bought a used Pcm to make that repair so I have a extra now. I will use that PCM and ground the plugs with a switch for now. Anyone think different ???? Not sure at this time..

[sinner6.0L]

Originally Posted by frttrain

I am having the same problem. I have a Gennis 4000 scan tool and no codes. Had the scan tool plugged in when the light came on and it said no comm with PCM running on memory. I think it is a PCM problem and plan on sending my PCM out for testing in the next few days. I bought another truck that would not start becauce the GPR had no ground and would not fire the plugs. I bought a used Pcm to make that repair so I have a extra now. I will use that PCM and ground the plugs with a switch for now. Anyone think different ???? Not sure at this time..

you need to check your pcm power fuses. if one is blown you may have a short somewhere

[NoRalPh]

Yea, check fuse #30, if it's blown unplug the fuel heater at the bottom of the fuel bowl or it will just blow again.

When you first roll-on the key, if you don't see a WTS light illuminate your PCM isn't running.....