Bad fuel economy with no obvious issues on '97 base
First time poster here.
I have owned my '97 prelude for 6 years now and absolutely love it!
I recently had all the engine gaskets/seals replaced, new timing belt, water pump etc. But over the years I have noticed the fuel economy...
I've researched this for hours but can't find any info on O2 sensor position.
I first installed Denso sensors 234-1017 (right) and 234-1006 (left) incorrectly, thinking the left sensor was on the left side of the exhaust manifold as I faced the engine.
I reversed the position of the...