hi all,

could anyone help me with this idle adjustment problem...

1988 WBX engine, manual trans
- full tune up with new spark plugs, dist. cap, rotor, oxygen sensor, air
filter, fuel filter, oil change
- new vacuum hoses
- replacing throttle body with a good used one because of bad TB switch -
the switch has clicking noise just off idle..
- replace AFM with a rebuilt one 6 months ago
- new cat. converter /muffler 3K miles ago

After replacing throttle body the idle stays at 1100/1200 rpm - the big
screw on the throttle body is ALL THE WAY in, if I back it out the idle
will rise

so the question is why and how to fix this...

I appreciate any help...

thanks in advance

dan