Originally Posted by Dave Henshall
first job though, see what voltage you get from the lambda, at pins 1 and 2 on the ecu with it all plugged in and running.
if its saturated at the top >1v is probably the map sensor, if its not reading at all, its probably the lambda sensor
Right then, that’s what I’ll do at lunch….as the car is here at work with me.
Will report back with my findings after.
So there’s a strong chance the lambda could be working fine, and it’s the map sensor that’s richening up the mixture (even at idle with closed loop)
Dave are you running closed loop, if so what fuel economy do you get, looks like I am in for another 200 mile tankfull until I get this sorted