Hi All,

I adjusted my throttle cable recently and when I started the engine it revved to about 3500 RPM.

I did a hard reset and started it again, and it dropped to about 800 RPM.

A day later I got a PO175 Bank B too rich code. Do you think it may be just a coincidence of should I back off the throttle cable to its position before the code came up?



Regards,

Karl

 

The throttle cable simply operates a butterfly flap that opens to allow more air and closes for less air. The throttle can't give more air to one bank than the other. Fuel injectors control the air/fuel mixture based on what the ECM decides is the correct duration for injector pulse. If both banks were to rich it could be the adjustment but I don't see it for one bank. You might want to take a set of STFT and LTFT then post the results so the folks can take a look and advise.

 

Thanks Vern,
I will do that this weekend.

Regards,
Karl