Help Me Asap!!!

QuadX22 · #1 (**permalink**) 12-08-2006, 10:26 PM

so as i was driving home, almost instantly my check engine light came on and my r.p.m's dropped to about 600 and my truck will run but very very rough i could barely get it to do 45 to get home, can anyone tell me whats going on??? i have superchips programmer, afe intake, 4 in. banks exhaust with the power elbow at the turbo, and banks yurbo wheel

josh_tn · #2 (**permalink**) 12-08-2006, 10:37 PM

How many miles? Ever replaced the CPS? Sounds like a good possiblity. Mine went out in similar fashion.

QuadX22 · #3 (**permalink**) 12-08-2006, 10:40 PM

sorry im new CPS? not as far as i know and 86,000 miles

josh_tn · #4 (**permalink**) 12-08-2006, 10:45 PM

no problem. welcome to the site.

CPS is the camshaft position sensor. Ford calls it the CMP I believe. Its fairly common on the 7.3's. I just replaced mine 2 weeks ago with 93k miles on the truck. With the right tools it only takes about 10 minutes to replace. You can find them on Ebay for about $60. Ford will charge you $150 or more from what I've heard. Most guys here even carry a spare even the glove compartment. I'll see if I can dig up some other posts about them with some instructions on replacing them. You'll need a 10mm socket and ratchet with at least a 3" extension and you're good to go.

QuadX22 · #5 (**permalink**) 12-08-2006, 10:48 PM

o ok...so the same thing happened to you huh?? i just dont want to do that if it turns out to not be that

josh_tn · #6 (**permalink**) 12-08-2006, 10:52 PM

Here's a good post on the replacement. ---> LINK

If you have any codes, that would be a good place to start diagnosing. I'm pretty new at diesels myself and just from reading a lot of posts on here, as soon as it starting happening, the CPS was my first thought. With your mileage, I would say the chances are very good that the CPS is going out. You can do a search for "camshaft position sensor" on the site and find lots of threads about the subject.

Hope that helps.