hi
my 7.3"s been givin me some grief. stalled out then didn't want to start,couple of mins later fired rite up, ran like a top for a week . went to get beer come out didn't want to start,couple of mins later fired rite up. any way to reset computer or do ya think I should take her to the shop ?
thx
R

 

unhooking both batteries for a more than a half hour will reset everything, and it will erase codes. it MAY be a CPS problem.

 

I would take that one step further and say it's probably a camshaft position sensor problem. Given the available information.

 

thx guys,is a cps sensor a big deal & would it have anything tadoo with an aftermarket kicker chippy thing ???

 

If you have a computer installed "piggy back" chip, problems could be caused by loose contact between the chip and circuit board. Try cleaning these contact points.

 

Hey Strokin, when you unhook the batteries are you unhooking the neg side of em or posi?

 

sounds like cps. takes a 10mm socket and small ext. there are some posts with pics on the site. i got mine from navistar (international) less than a hundred bucks. ask the stealer what they get for one. well thats too much!!!!

 

Unhook either side and it only takes 5 to 10 minutes. Turn on your headlights to drain any residual power. That is all it takes.

 

thx everybody , if I take her to the shop & hook it up to a diagnostic will it tell me that it's the cps sensor or will they try & give me the run around

 

Probably. Autozone around here will scan it for free and tell you what is wrong. May want to try that route 1st.

 

i just hooked up a superchips tuner to my 99 superduty and it comes up as "not original diagnostic settings" or something like that. if i reset the computer by unhooking the batteries, do you think that would do the trick. thanx

 

Wow...old thread. Were you installing the tuners performance program, or using it for it's diagnostics when you got that message?

 

This time I decided to look at the original posting date before answering. When my Superchip quit years ago I of course replaced the CPS. Still no start, so I just had it towed to the stealership. The stealership told me the chip had everything out of whack and pulled it. It worked and it took me a few days to get a new chip from Superchips, but it's been fine ever since. But now I have my brandnew DP 6 tunes, and it's a lot more fun than just a single setting 80 hp chip, although without the Superchip my truck was no fun at all to drive.

 

i was trying to performance tune. the diagnostics worked fine. are those made to work on only one truck after the first time or is there some way to reset them

 

Wasn't there a Ford recall on the CPS and won't they replace it for free?