cap rotor plugs all pretty new.throttle body,iac cleaned,all conections elec. cont. cleaner..

Sorry to highjack but i have 87 with sim issue idle is little rough not to bad but plugs burn white also and seems to miss fire sometimes. No havnt cleaned c101 yet. But wondering if a bad cat can have any affect on this also?

Before proceeding and speculating, click on the pink link in my signature and do the procedures outlined in posts 1,2,3, and 5.

its all been done,read on a jeep service builetin re;map sensor test,says map input(5v),& "output" must be 4.5-5v key on???or replace???

Renix testing ...http://www.lunghd.com/Tech_Articles/...iagnostics.htm

Look at the link freegdr posted up. Input should be around 5 volts. Output is low at high vacuum and high at low vacuum.

ill figure it out thks guys

Get the old meter out and see what you've got.