Mysterious miss

[Grabber523]

Originally Posted by 88Racing

No plugs or cops changed yet.

Only 23K on truck mostly highway miles

If the gryphon were hooked up could it pull them or does have to see them as the pcm does

Lars

If the PCM see it, the Gryphon should...just because you don't have a CEL doesn't mean there aren't codes stored in there.

[Jackpine]

Originally Posted by Grabber523

If the PCM see it, the Gryphon should...just because you don't have a CEL doesn't mean there aren't codes stored in there.

Right! Go into the "Diagnostics" menu (or something like that). It should show any codes you have thrown. And - change your "Alerts" to tell you if even ONE code has been thrown. I think, the default setting on this is three codes.

Alerts is a pretty neat feature, once you get used to it and learn what should be an alert and what shouldn't.

- Jack

[jimmyv13]

With my Edge, I didn't see all of the codes that the Ford tech brought up...there were 2 or 3 4x4 codes that came up when my vacuum module crapped the bed and the Edge never showed them. The Edge only showed the P0171 code for a lean condition from a bad COP. Any idea why it would see certain codes and not others?

[88Racing]

Thanx Jack and Grabber523

This will give me more incentive to get the gryphon hooked up and running.

Lars

[Jackpine]

Originally Posted by jimmyv13

With my Edge, I didn't see all of the codes that the Ford tech brought up...there were 2 or 3 4x4 codes that came up when my vacuum module crapped the bed and the Edge never showed them. The Edge only showed the P0171 code for a lean condition from a bad COP. Any idea why it would see certain codes and not others?

No, I have no idea at all. I think this is a question for the Mad Doctor! Bill - HELP!

- Jack

[jimmyv13]

I also wonder if it will be different as a Gryphon?

[Jackpine]

Well heck! I learn something new each day. Thanks, Bill, I thought the PCM was the Great PooBah here and now you tell me it's only part of a committee! :o

- Jack

[Power Hungry]

Actually Jack, that's a great way to put it. Your vehicle no longer has a "brain" but something more like a controlling committee or board of directors, if you will. All the modules interact with each other and share data on common nodes. In fact, late model vehicle can have as many as 25 active communications nodes in the vehicle. This makes things interesting when programming or doing diagnostics.

Take care.

[Power Hungry]

Keep in mind that the programmer (whether it's Gryphon or Evolution) only accesses the PCM diagnostic codes. This mean that any codes in the ABS Controller, Transfer Case Controller, Body Module, Instrument Cluster, etc. are not read. 4x4 codes are often stored in the ABS Controller and therefore wouldn't be displayed.

As for misfire, those would be stored in the PCM for a number of Key Cycles and should be readily available using the "Read DTCs" function from the diagnostics menu.

Take care.