How many O2 sensors on the '97 4.2, two or four?
Mike

 

The 1998 has four... two next to the manifold and two "downstream." The downstream are next just after the catalytic converter. Make sure you measure you wire lengths. They come in 8 inch 13 inch and 16 inch lengths.

good luck.

 

test

 

Thanks for the info. I have one more question, How do you get those stubborn little boogers out of the manifold? Fire wrench, PB Blaster,
VBFH with a few beers, what?
Thanks,
Mike

 

blaster AND beer. ok listen close... to get both of them out of the manifold, get a O2 sensoer socket or do like i did, cut the wires and use a deepwell 22mm.. you have to get both of them out from the bottom.. have fun!!!!!