2 DME's and no solutions

[Coleman El]

Okay. I posted on my dme issue before. I can't, for the life of me, figure out what's causing my dme to be triggered to crash. I've just recently got it back from the company that originally replaced my original dme with a new one. And for the second time, my dme crashed. I can't determine if it's a corrupt file on their end or if it's in my vehicle. I believe the problem to be on my end. The first time it went out is when I was going to pass a vehicle and it died. This time, I was just traveling and it died again. I don't know where to begin to figure out what's the cause of this and to fix it. The throttle body is new. The maf sensor is new. The pedal potentiometer (whole gas pedal) is new. The company that initially replaced and programmed it said that they will void the warranty if it happens again and that I need to fix the issue. Which I agree with them. I just truly would like some help into fixing this issue so that I can truly enjoy this fine machine. It's a 4.6is and its tons of fun to drive. Just would like to get to the bottom of this. Has anyone else had this issue? Please help me.

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[Overboost]

You need to read the codes and report back

[Coleman El]

I was just about post on the code deal. I did check the codes. And only the o2 sensors came up. I used INPA and ISTA to do so.

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[Overboost]

So you are able to communicate with the DME so it's not crashed. No codes and no run leads to the fuel pump or pressure. Have you check for pressure at the rails?

[Coleman El]

I stated that I checked codes when I got my dme back. These are the codes.

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[Fifty150hs]

Originally Posted by Coleman El

I stated that I checked codes when I got my dme back. These are the codes.

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How old are your O2 sensors? What brand? Could also indicate a vacuum leak. Have you smoke tested it?

[Coleman El]

Originally Posted by Fifty150hs

How old are your O2 sensors? What brand? Could also indicate a vacuum leak. Have you smoke tested it?

O2 sensors are oem. No haven't smoke tested.

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[Fifty150hs]

If the O2 sensors are original to the car it could be them. I would definitely smoke test it.

[Coleman El]

It's more electrical than anything. I have a plan though.

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[RocketyMan]

I'd be curious what shadow codes you may have. I'm not sure ISTA will show these, but INPA will. With your description, I'm not sure exactly what you mean by "DME crash." Are you referencing just loss of power over the road? If so, this would make sense to question the fuel pump. If the fuel pump is compromised, it will draw more current if a couple of the coils are shorted.

Also, cracked fuses could pose problems.