here's what i have done:

- cleaned throttle body

- checked TPS with DVM, OK - clicks at idle, etc.

- cleaned IAC and took it apart to make sure

- cleaned flame trap, oil separator box

- new intake accordion hose, no more holes

- new intake manifold gasket

- new injector seals

- injectors ultrasonically cleaned, new injector filters

- new dist. cap, rotor, wires, NGK's

- checked ign. timing with timing light

- brand new O2 sensor

- intellitronix A/F meter shows idle cycle 0.1V - 0.7V

- idles at 800-900 RPM according to volvo in-dash tach (too high already)

- messed with AMM, CO adjustment screw to no avail. checks out with LED for correct mixture

- have not yet found any vacuum leaks otherwise

at idle, my car kinda misses once every O2 sensor cycle or so. i think at the lean end of it (surprise, surprise). definitely a miss, you can feel it at the tailpipe when it happens. if i disconnect the O2 sensor, idle smooths out. i have not checked compression, but the car runs perfect, with plenty of power. never misses off idle. uses no oil. maybe these wires are crap. any ideas? anyone?

no, i don't think i have a group-A cam. my mom's '89 245 idles like it's not even there. is LH 2.2 just not that on top of things?

thanx for your help, guys

vytas