Netken, please, after you clean the idle valve and check de O2
sensor, have to chech the Pot. The voltage between pin 2 a
ground has to be 700 mili volts or .7 volts, engine running. If It
doesn't match this value, trie to get it rotating POT right side a
little bit down or up direction. For do that, may be, you have to
disconnect the Pressure Regulator to get access to the POT cap
and 4 screws. The two left screw, under the cap, are using as
pivot t, losse 4 screw only little bit. Conect the Pressure
regulator, star the engine, instal the Multi voltimeter red at Pin 2
and Black to batteri ground. Take initial voltage readings
between Pin 2 an ground. If its different than 700 Mili
volts, then rotate Pot right side very slowly, few degrees, lucking
for to match 700 Milivots, +/- .250mv. You will notice the change
of RPM when you rotate the Pot a little bit.
iF YOU dont match .7 volts, after ROTATING THE POT, may be
you have to graduate the tiny screw on the front of the Trim Pot.
Read the Chris Marteen, Jay 300, Sbourg, Threadid and others on
06-25-2003. and "AIR FLOW METER POT SOURCE - BOSCH CIS"