please help

[raymond lopez]

My 1999 F350 has a 7.3 power stroke engine that has a miss only when it idles. it almost feels like a bad injector. At 60 or 65 miles per hour it does not miss at all. please help.

[Dieseltorkin]

Have you changed your fuel filter? Could also be the CPS starting to fail. Is there a certain RPM this happens between? You said only at idle but then jump to 60-65.

[raymond lopez]

Fuel filters are changed as per the book. The service engine light is on and I did have a backyard mechanic replace 1 injector and I wouldn't be able to tell you which one. He did charge me right at $500.00 and i still had the same problem. This truck runs really great when not iding. when iding it runs really rough. I apoligize but,What is the cps?

[eric99f250]

cps is camshaft position sensor you should have gotten a recall from ford about it and should be able to get it for free from your local dealer i have to get mine done yet