PO500 story continues with new twist

[Billme]

Does this post from AWAR show anything that you're looking for?

Why won't it start.

Removed and charged my battery, now my 2001 Eddie Bauer Expedition will not start. Turning the key does nothing, not even a grunt. Now what do I do?

www.expeditionforum.com

No, but I looked at my positive cable and noticed it looks crusty in the wire inside and will change that out soon just because it’s old..
Just changing the battery out unless he had a bad battery (Known to have happened) is more likely cable or connection.. Or how he might have hooked it up.. There is a A&B inline fuse I’ve seen on the drawings, but I’ve never have looked for them.. I would certainly check the ignition solenoid, and its ground..

 

[Billme]

I’ve come to the conclusion I have a bad PCM.. I just had some new codes come up all of sudden plus the P500 code.. All the codes in the pass are ghost, because after I do a hard reset, and upgrading components, the longer it takes to show up.. If it was real, it would show up immediately.. I’m going to continue replacing the easy stuff, just because it’s old such as cables, and as soon as I learn to take apart this Battery junction box without destroying it, I will do that..
Grok recommended other companies to fix my original PCM, not the Flagship one, although I may send it to see if it’s also corrupted.., but what about the GEM at this point… I never liked how upfix said about that situation… So I may take it out and send it too..
So what made me think the PCM is bad? My evap control gets funky when all this happens creating excessive vacuum, but acts correctly after a hard reset.. This has nothing to do with the GEM.. It’s directly controlled by the PCM..
Manoman, if this is so, then just about every part I’ve bought except for the timing job has been junk on buying local parts at the big two..
Anyway I’m just driving it, I can tell when I need to reset, which is getting longer duration as I said.. When I get a second wind I’ll continue the fight hehe

 

[Billme]

Well whatever lol It’s back in the transmission shop.. These guys are determined to find the problem..
I’m at a loss myself, I’m just glad they understand.. Good folks..
If this happens again, I’m going to change the PCM, GEM, again.. I don’t know what else to do.. I’m sure it has something to do with the torque converter or controls

 

[jr1under]

Considering all you've done, do you think there's more than one issue? Yours sounds like one of those airplane disaster documentaries where the crash comes from an unlikely combination of problems, none of which were unsolvable on their own.

 

[Billme]

Considering all you've done, do you think there's more than one issue? Yours sounds like one of those airplane disaster documentaries where the crash comes from an unlikely combination of problems, none of which were unsolvable on their own.

lol, It’s a mess, but Yes, there is more than one issue.. One, they said that had a run of bad TC’s.. Ok I can believe that.. Second, which I think is a big one for me, is when this PO 500 finally shows up, the evap controls are currupted, and that doesn’t have anything to do with the GEM, ABS system unless that signal from the Gem is somehow corrupting the PCM..
They are going to send the driveshaft off to have it checked.. They’re going to change the TC, and check everything.. I told them to check the wear where the seal rides.. Each time this happens , fluid is covering the transmission.. Not a dry spot on it.. I wonder if they checked the vent?.. The dipstick housing has a problem that I’ve never had before..
As soon as they are finished, I’m going to drive it home and change out the PCM, and Gem.. Got to do something different this time..
The owner said he want to drive it home and drive for several days instead of a quick test drive.. I said be my guest..
I feel like I’m on final, and both props fell off lol