Quote:
Originally Posted by turbovr41991
RPMs seem to be best around 2500 @ 75 mph... ...
I just put in a fresh O2 sensor and was hoping that would help out. I am not getting the P1164 error code anymore, but not any noticable differences.
|
Yup. My HX also needed 2500 rpm for lean burn until I started using Marvel Mystery Oil. Now it runs lean burn down to 1800-1900 rpm. No I don't work for them and don't own stock or gain anything when others use MMO.
I've had the car 4 years now. Tried everything I could think of for over three years, including a head rebuild with four new valves. Still no low rpm's lean burn. One day after driving it 3.3 years I added MMO to the tank and voila, low speed lean burn and no more stress on that topic for me.
I anticipate a discussion of why it shouldn't work and it's snake oil, etc. Ho-hum. If I fill without it, I lose low speed lean burn. Then add some via a funnel and tube and it works again. I have guesses why it works but I don't care, as long as I don't run out of it.