alright guys, my uncle stooped yesterday to fill his truck. got in to go and it wouldnt start. i pulled it home last night and got the code reader from work to see what the codes were on it. the code was p0603 internal control module keep alive memory error. does anyone know what this code means and would it not let the truck start. i erased the code to see if that would let it start. and still nothing. he also has a back pressure code that keeps coming up as soon as he starts it but that was doin that before and still ran. any help here guys.


thanks in advance.
Eddie

 

needs a new CPS and the backpressure code is normal

 

cps- crank position sensor? cam positon sensor?

 

cam positon sensor



---AutoMerged DoublePost---

about 25bux from the ford dealership or you can order one...
Ford 94-2003 7.3L Powerstroke Diesel Cam Position Sensor CPS

 

really bad to go out on the 7.3s, can sometimes be intermittent and leave you stranded, come back in couple of hours and runs fine, then strands you again b4 you get back home!

 

well he bought one from ford today, swapped it out in a few minutes. still nothing. what else could it be

 

glow plug relay is bad about going out also.

 

Does it have a chip? GPR will not keep it from starting if he just shut it off to get fuel. I have seen many chips take out an IDM. Will the scanner he has read pid's? If so monitor ICP and let us know what it says while cranking. Does it smoke any while cranking or even attempt to start?

 

no chip, when he tries to start it it hits once then nothing. ill go out and monitor the icp here in a lil while

eddie

 

well i pulled it to brians truck shop wednesday and they checked it out. tried telling us it was the batteries at first not giving it enough juice. but got them charged up completely and it still wouldnt start. he messed around with it for a lil while and finaly got a computer off a 94 psd and put on it. it fired right up. so he has a new computer on the way. thanks for all the help though guys.