Re: [DML] idle speed Adjustment

[dherv10@xxxx]

Group, This is what I do.
Most of the time what I see is wrong with fast Idle is the adjustments. You 
must make sure you don't have any vacuum leaks. 
#1. As David mentioned earlier, the air horn gaskets. Very often these are 
not replaced. 
#2. The idle speed motor tube into the lower parts of the air flow meter 
isn't sealed properly. 
Once the vacuum leaks are stabilized, the adjustment arm under the cable 
spindle must be properly adjusted as to allow the throttle plate lever to go 
all the way down. You may have to remove the Air horn to verify this or just 
unhook the arm and see where the lever rest at. Make sure the lower 
adjustment screw isn't keeping the lever from going all the way down. One you 
have determined the throttle body lever is all the way down and the arm is 
off, then turn the lower adjustment screw about 1/4 turn clock to get it 
right off the bottom. (Rest Screw). Now adjust the upper screw in or turn 
clock to trip the micro switch about 30 thousands. This can be the starting 
point. Reattach the lower arm and make sure you adjust it as to allow the 
lever to stay in the rest position. You may also have to adjust out any slack 
to looseness on the ball connection on the lever. I took mine off and 
soldered the ball joint because it had become so loose I couldn't get my idle 
to stabilize. Also refer to D:05:02 in the work shop manual for the 
thermistor and ECU info.
John Hervey
www.specialTauto.com