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Setting base idle specs 700

posted by  740man on  Sun Feb 23 21:39 CST 2003
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This great info appears in the FAQ section concerning setting base idle specs for LH 2.1, 2.2: (kinda hard to find though under- Engine: Fuel injection/Throttle body and Throttle position switch adjustment)


Go to the right inner fender well (740’s) or the left inner fender well (240’s) and find the red and white pigtail that sits besides the ignition ECU. This is your CIS test point. Ground this connector and adjust the bypass air thumbscrew on the throttle body until the idle is 725 RPM’s. Remove the ground from your test point; the idle should be close to 750 RPM’s.
Next to the red and white wire is a green and white pigtail. This is your CO test point. Using Volvo special tool part #9995280 (approx. $35) plug one end of the test LED to the fender well connector and the red connector to the positive terminal of the battery. A logic probe can be used in place of the Volvo special tool or if you are handy build the circuit below. Remove the tamper proof plug from the air mass meter by drilling two 1/8” holes in the plug about 3/16” deep and removing the plug with needle nose pliers or snap ring pliers. This will reveal the CO adjusting screw. Adjust the AMM until the LED on the tester blinks on and off at equal intervals.

By the right fender well does he mean inside the car at FI brain, ECU?
What does CIS mean?????
It would be way worth it to me to spend the $35 bucks to be able to do this
considering a mechanic would charge you $70 an hour.

Thanks






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