I just replaced the UVCH's and I'm still getting the P0264 code when I do a buzz test or a KOEO test. What could be the possible causes? A bad solenoid? Bad #2 injector? The engine runs fine right now, no missing that I can notice.
you could have high resistance in the injector solenoid. did you do a cylinder contribution test? a bad wire in the engine wire harness can cause that too,pin out the harness to eliminate that.
Ok guys... Thanks for the ideas. Since this isn't causing me problems right now, I think I'll wait for spring(warmer weather ) and then try swapping injectors/solenoids and see how things go from there.
Dave, can the solenoids be swapped without pulling the injector? Or will I have to go the route Andy mentioned, pulling the whole injector?
you can swap a solenoid without removing the injector.
chances are it is not a bad solenoid, though.
We have an inductance meter, with which we use to check the solenoids... and we have maybe seen 4-5 bad solenoids in the past 5-6 years...tens of thousands of injectors worth.
It is possibly a bad solenoid, and maybe worth swapping on another solenoid for comparison, but we have seen high internal resistance, on the MOSFET drivers within an IDM create similar "bad solenoid" scenarios...so maybe try another IDM if the solenoid swap doesn't fix things.
...or it could be that the armature to solenoid clearances are not 'correct' on that particular injector creating a higher current flow through the IDM...
I had heard that the chance of an injector solenoid going bad was fairly slim. If I can swap one without pulling the injector, I will try that first. Actually, I think I'll just ohm all the solenoids first and see how they compare. What is the desired ohmic value of the injector solenoids?
Ok, thanks guys. I'll be sure to check under the solenoid just to be sure.
Mike
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