You can check the fuel trims. Block 032. If you have a negative value in the vales fields then the ecu is subtracting fuel. Positive value means the ecu is adding fuel, possible vac leaks etc
or
Log the Lambda readings while doing a power run using block 031
Clearing the fault codes will reset the values shown in block 032 so note them down prior to any fault clearing.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.