420A ECU/PCM issues

[babybear86bw]

Hello name is Brandi and my 1995 Mitsubishi eclipse gs is having issues with ecu and pcm. Car will usually run for a minute and then it absolutely just falls flat on its face any help would be great

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[danl]

What leads you to believe it’s the ecu?

 

[babybear86bw]

Have exhausted all possibilities she will run then just fall absolutely on face. Thinking it's an issue with I guess it would be ghost code at this point but if it's not that what could it be

 

[babybear86bw]

Have exhausted all possibilities she will run then just fall absolutely on face. Thinking it's an issue with I guess it would be ghost code at this point but if it's not that what could it be

She is a 420a automatic as well

 

[pauleyman]

Have exhausted all possibilities she will run then just fall absolutely on face. Thinking it's an issue with I guess it would be ghost code at this point but if it's not that what could it be

Elaborate on "exhausted all possibilities" .....replaced stuff? Checked various components, wiring etc? Measured things?

 

[babybear86bw]

Replaced what the code keeps reading also, checked other components, did compression tests, fuses checked, will be willing to double check wiring again, and measured what we could. We also look to see what the other 420a has to the other not much is different. I guess at this point cause the fuse box bracket went missing could it be that

 

[babybear86bw]

Absolute loss of power while driving

 

[pauleyman]

What code? Did it run well for a bit? Does it run differently cold vs warmed up?
Please provide more info. Ecu is a dumb device. Info in, instructions out. You have to know what its doing and why. Sensor inputs can be bad, wiring. Mechanical failure, improper install of parts. Lots of things
Elaborate please.

 

[babybear86bw]

Iac but may have found issue

 

[babybear86bw]

And ran phenomenal when it did just recent started the whole issue but we will see may need to do full rebuild

 

[BLACK'98DSM]

Full rebuild? Why? You said it passed the compression test. So if it isn't knocking or smoking then you really have no reason to rebuild the engine at this time.

I'd like to know what code it had. And we can work from there.