Analysis of the attached code/PID scan will be appreciated!

[roswell998]

It will be appreciated if some of you familiar with PID scans would analyze the chart below taken from a datastream scan using an Actron CP9190 scanner while running on the freeway at about 60mph. Toward the end of the scan the SHO was run at WOT for a few seconds followed by a few seconds coasting with foot off the accelerator.

This chart was posted a few days ago in another thread for a specific EGR issue being worked on, but I thought some of you might notice other areas that may be of concern from the data since all PID's are charted in addition to the EGR related PID's. FYI, KOEO & KOER codes were 111's and the cylinder balance test passed.


http://www.shoforum.com/attachment.php?attachmentid=214&d=1191276223

 

[projectSHO89]

I don't see anything that stands out as being abnormal other than your LTFTs.

Of course, I don't have any indication what, specifically, you're looking for.

Steve

 

[roswell998]

I don't see anything that stands out as being abnormal other than your LTFTs.

Of course, I don't have any indication what, specifically, you're looking for.

Steve

What range should the LTFTs be in?

I'm not certain, but is it safe to assume that the LTFTs are off because of the improper learning by the PCM when the DPFE was defective and those values will take some time period to be relearned now that the DPFE/EGR problem has been fixed by replacing the DPFE with a new Motorcraft part?

If that is the case, how long does it take for the LTFTs to be relearned and corrected?

Also, if that indeed is what is going on, would it be wise to disconnect the KAM lead and let the system relearn from scratch or just wait it out?

In answer to your question, I was not looking for anything specific but your pointing out the LTFT subject is exactly the type of response I'm looking for. I'm a technocrat but digging into an area that is a bit new for me.

 

[AREA 91]

I'd dissconnect the battery, to clean the KAM. Then re-set the idle, and take it for a spin.

 

[projectSHO89]

I'd prefer to see them running closer to zero while in closed-loop. However, they are still within the normal range.

I'd reset the KAM and restart with baseline values. It's simpler to just clear out all the old data and start fresh than to allow the system to gradually tweak its operation.

There's no need to mess with the battery cables to reset the computer. Just pull the PCM Relay/Fuel Pump fuse for 10-15 minutes and reinstall.

Steve