What does this vacuum mean?

[cp2295]

Now that I have aligned and fixed my cmp sensor, (enabled the misfire monitor and no codes), I go to mode 6 and I see this new addition to the failed tests:

Cid $00 tid $56: value: 12531, min: n/a, max: 3000, units: n/a.

I read on ford this is measuring cylinder events.
What does that mean and how do I fix it? Anyone got an idea? Is that misfires or something?

All of a sudden my truck is kind of pingy.. After fixing the cmp.

 

[cp2295]

And the monitor has bumped the max misfire count from 3000 to 12797, and #4 and #6 are giving me values of 109 whereas the rest are at 0.

The $00 $56 is now at 58148... I don't know what that means though. I read that it is saying for every 1000 revolutions each cylinder gets 500 sparks. So me being way over means the misfire monitor doesn't work? I don't understand how to fix that??

 

[JP02XLT]

Having the sensor mis-aligned will not damage the engine, unless your running the crap out of it and its detonating (pinging). The ECU will try to adjust the timing, if it cant, it sets off the light on the dash. You have about a 4 degree window to hit the placement of the cmp.

It could cause the heads and valves to carbon up a little but that would take bit to do so.

I wish your scanner gave you more information as in a specific PXXX code, it would be way more helpful, as what your getting seems to be information that is not always relevant to rest of the automotive world. Any way to have is it scanned somewhere else, different scanner?

From what you wrote 4 & 6 seem to be the culprits, again your going to have to pull the wires while its running and look for a notable change in the way it idles, if 4 & 6 are misfiring you wont notice as much difference as on the other cylinders, if its not electrical (spark) or fuel delivery issues (gas) then it has to be mechanical in in the cylinder, burnt, warped valves etc etc.

JP02XLT

 

[cp2295]

Yeah it was having a p1309 so I fixed that and finally it got the misfire monitor to start working. Anyways I'll try that out, i should be getting the new plugs here in a couple days, and I got pretty even compression in all cylinders (130-140) so I'm not thinking it's anything mechanical. Plus the motor has only got 10k since the rebuild and at the time I had the heads washed and vacuum tested, and they passed. Thinking more along the lines of injectors or spark

 

[JP02XLT]

You could try a mix of 25% E85 & 75% gas and run the entire tank through to see if the idle improves, No more e85 than that though it will run lean on more e-85. E85 is a great injector cleaner, I have used it in the wifes car for years to clean up the idle, worked everytime and she is picky on how her car idled.

Another thing to try is to unplug the injector while its running, unplug / plug several times, this causes the injector to cycle a longer stroke than normal and can help with the cleaning of minor debri.

JP02XLT

 

[cp2295]

Nice that's a good trick, I'll have to give that a try on #1-3. 4-6 are covered by the dang intake manifold! It's weird now the stupid thing is saying 2, 5, and 6 are slightly misfiring.. I'm just gonna do the plugs and see how that works. That thing is retarded. Do you know of any method to test for weak injectors? I know if they're working you'll hear em clicking but anyway to test for weakness?

Also, my truck says it's flex fuel but the head stamp indicates otherwise. The block is a remanufactured one. If I run straight e85 and I don't have flex fuel heads and all the other stuff, what's the worst that can happen? Just run like garbage or will it cause damage?

 

[cp2295]

I can hear my injectors pretty good without a stethoscope, maybe there's one or a few louder ones that are going bad? Or maybe the quieter ones are going bad?

 

[JP02XLT]

Sound really does not have much to do with how they operate


JP02XLT

 

[cp2295]

oh i read that you hear them clicking when they're working, but i figured maybe they're too loud? i don't know, do you have any method to test them for weak firing? or do i just have to replace it and hope that works?

 

[JP02XLT]

I do not know of an incar method to test an injector, on the bench you can do a flow test as well as electrical tests to determine how close they are to what they should be. I would definitely pull the plugs off & cylce them & the plug wires to determine if there is a cylinder not up to par either electrical or fuel before I started throwing parts at it.

JP02XLT

 

[cp2295]

Okay just crank it and watch to see if fuel sprays out?

 

[cp2295]

My freeze frame says fuel system status unknown,,it also says no dtcs so it could contain out of date/inaccurate info.. If that helps any, I can get more specific with values

 

[JP02XLT]

Dont remove the injector, just unplug & plug the electrical connector on the injector to see if the idle changes and this will cause the injector to fully cycle while running which may dislodge some minor debri, if it happens to be dirty.

JP02XLT

 

[cp2295]

Oh well, I'll try that on 1-3, 4-6 are under the intake manifold

 

[cp2295]

4-6 I'll just do the plug wires, seems like it'll do the same thing..