Ecu master black built in MAP sensor reading 593psi

Map reading 593 psi when letting off the throttle and stalling the car on idle, was working fine. Any ideas? It was running fine but had the engine failed, piston broke from the rings and had oil go everywhere.

any other sensors reading incorrectly under that condition? thinking maybe a 5V or sensor ground problem if multiple sensors are affected

Other theory is that the internal MAP sensor is damaged when it goes to full vaccum or something. are you able to bench test the ecu or connect an external MAP to help verify?

Post a tune file and log to google drive and link it here, love to take a look

Hey, thanks for the reply!

It was full of oil, used electrical parts cleaner to clean all the oil out the map vacuum inlet and it’s working fine.

2 Likes