did what you said worked out great got 1 from ebay and they sent a POS ....THAT WAS THE WRONG ONE $$%##$%#$&%%$

http://i383.photobucket.com/albums/oo278/mistapickles/thehobbyshop2.jpg

anyone have any issue using aftermarket bosch O2 sensor instead of factory type direct fit O2 sensor?

I'm trying to help a friend get his 88 running better, the problem its having is a rough idle and major missfire under light load, but at wot it runs fine. so far I've rebuilt the throttle body, new intake manifold gasket, plugs wires, cap rotor, cleaned the injectors, replaced the injector clips, swapped the coil, swapped the tps and temp sensors. nothing seems to make a difference so far. Sooo frustrating!