Hello, I have a couple of questions regarding this procedure, but the procedure itself does not seem to be posted on the forum, so in case anybody else needs to do this I am going to start by pasting it from my Haynes manual:

1. Start the engine and allow it to run for two minutes or more. Shut off the engine and allow the throttle kicker to engage fully.
2. Disconnect the wire to the idle speed control actuator and the coolant temperature sensor.
3. Hook up a tachometer according to the manufacturer's specifications.
4. Start the engine. Adjust the extension screw on the ISC actuator until the rpm is correct:

A) 3.9L engine - 2,500 to 2,600 rpm
B) 5.2L engine and 5.9L engines - 2,750 to 2,850 rpm

5. Reconnect the ISC actuator electrical connector.
6. Reconnect the coolant temperature sensor.


Questions are as follows:

1. The "wire" mentioned in step number 2. That must be the electrical connector, right? Because there are no other wires going to it.
2. I purchased a laser tachometer to read the RPM. It works with a piece of reflective sticker that should be placed on the surface to read. This must be done on the crankshaft pulley, right? Does the sticker have to be on the front of the pulley, or can I attach it to the side and measure from an angle? The included documentation does not state.
3. Why would I set the idle to 2,750 RPM? Will it correct itself when I reattach the electrical connector?
4. Should the electrical connector and temperature sensor be attached while the engine is still running? I would assume not, but the procedure does not describe this.

Thank you in advance.

 

Okay, I was able to answer my own questions. I guess it would be a good idea for me to post my results on here. I ditched the laser tachometer and bought a new one that could be attached to the negative side of the ignition coil. After setting the idle to approximately 2800 RPM, shutting down the vehicle and then reconnecting temperature sensor + idle speed control wiring, the idle automatically dropped to a perfect level.