wyldhillbillie
Registered User
a month ago I was driving my truck when it started to lose power. it would not rev over 1600 rpms.I make it back to the garage shut it off and has never started again. the fuel pump has been in question for some time so i replaced it along with the filter. I also replaced the crank sensor, icp sensor, valve cover gaskets and harnesses. I broke down and bought a scan program ran it and came up with codes po344 and po603. I also ran a buzz test and got no buzzing. does this mean the idm is shot or maybe a relay? I don't know where to go from this point. I would love some help thanks