can anyone show me a picture of where the idle adjustment screw is on a 87 305 tpi motor im wanting to see if i can adjust the minimum idle speed to see if it helps my issue

 

you cant adjust the idle on the 305tpi. id suspect a sensor issue, iac or tps.

 

hmm good to know i was under the impression that you could i have already changed the iac valve and checked the tps for any dead spots none that im aware of i did take it off the throttle body though maybe i didnt adjust it to the correct setting?

 

Idle adjustment screw is on the driver side of the thottle body facing the wind shield. It is sealed and you will have to remove the sealer material with a small pick.. I forget the size , but it is a small torque bit for adjustments.

 

He's right I was just reading about it, its a T20 torque.

 

do any of you guys have a pic by any chance??? my problem is when im at a stop it will idle at about 600 then drop to about 500 and die

 

Give this a read, there's also a link posted that shows how to adjust the iac/tps.

305 tbi perfect idle speed? - Third Generation F-Body Message Boards

Btw I still think its an iac issue, according to what I've been reading ~600 rpm is where you wanna be.

 

It reads like the IAC is not being ECM controlled and base idle is set too low.
If you think about it, if IAC control gives out, you still want engine to idle for vacuum for brakes...

 

hmmm i did replace the iac maybe i did not set it right they advised me to turn the ignition on without starting car then disconnect connector from iac then to take out key and just start it? is this the correct method?

 

This is how to make your initial adjustment: IAC and TPS Adjustment - ThirdGen.org
Remember, your desired idle of 600 rpm is when the trans is in drive, not park or neutral.