89 tpi 350 is running very very rich, im testing sensors, the tps was off so I adjusted it to .5 at zero throttle, next I went to the maf and im not sure how to test, and also it has a crack where the inner tube connects to the rest to the unit. so I need some solid test procedures and them opinion on the crack.
one more thing, I need a how to to test o2 sensors. thanks.

 

no one knows??? Its just a mater of which wire is hot, which one is ref. ect.(I just dont want to fry it but poking around and hopping) So you all just replace them and hope your $200 guess was the right one??