Join Date: Oct 2008
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
buzz test results...looking for input
I borrowed someones snap on scanner to try and figure out an intermittent miss/hesitation/breaking up at 1400-1600 RPM when warmed up. It almost sounds like a lazy injector. It will seem to make the noise or break up when letting off the foot pedal at that same RPM range.
I performed a Cylinder Contribution Test a few times now over the course of a few weeks and I still come up with a pass result. I performed a buzz test today and got the P1298 code so I searched and found that the code comes up alot when performing the buzz test and I wasn't the only one.
I waited an hour or so and went out and turned the key on and did the buzz test again. This time NO BUZZ just the tach moving 8 times and the P1298 came up again. I started the truck real quick and shut if off I performed the test a few more times and it buzzed and spit out the IDM fault again.
I then performed the KOEO test and got the P1298 IDM fault again. I think I'm going to swap out the passenger UVCHarness (I have one on hand) as I did the drivers side a few months back when I was fooled by grey CPS to change #8 injector.
So far I've swapped foot pedals, swapped over to the black CPS. Cleaned the strainers in the tank and put a solid fuel line to the pump, changed #8 injector and drivers harness, added a 5.6K resistor to the ICP. Each step has made the truck run better overall. Any input is appreciated I think I'll change the passenger UVCH and then try to find someone with an IDM to swap.
What do you think? Thanks in advance.
2001 F250 PSD - Oxford white, Swamps 175/146 Single Shots, intank mods, riff raff rfx ,magnaflow muffler
2001 Lightning - Oxford white, garage queen