Strange problem
It runs great when I start it from cold and gradually gets worse until the first bar on the temperature gauge
Exhaust smells Catalytic-ish when it does this but not before, it can even rev up good until this point.
Disconnected O2 sensor, no difference
Noticed yesterday after putting fuel in it would get rough when lights on, then it started holding back on acceleration, it has rapidly gotten worse since then.
Fuel economy a bit trash for a while, could be the corroded fuel filler neck though
Disconnected MAF sensor, no difference either
Possible hissing but could be air flow
