I have a 92 civic dx. After some ecu problems and it not priming, we replaced the ecu with a new cardone, and replaced the fuel relay for good measure. Then it ran rough and threw code 3, MAP sensor. We got another MAP from the junkyard and it didn’t solve the issue. I checked the wires and they’re continuous and not shorted together. I tested the positive wire and it’s outputting 10 volts. It’s supposed to output 5 so I’m pretty stumped.

Any help is appreciated

 

Your replacement ECU is trash. Next time, I suggest you find another supplier for ANY part that you need instead of "Car-Done".

 

Dang they really that bad?

 

yeah cardon is the walmart of auto parts

 

What’s a better option? Not many junkyards seem to have good ECUs.
thanks