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LH 2.4, FAQ, And Idle Adjustment 700 1990

posted by  someone claiming to be Dallas on  Mon May 19 11:07 CST 2003 [RELATED]

There is something I don't quite follow in the FAQ regarding idle adjustment and LH 2.4 cars. Under the "Engine: Fuel Injection" category, "Throttle Body and Throttle Position Switch Adjustment" subject, it is stated:

Adjusting the LH2.4:

1. Checking the Throttle Body (Plate and TPS) Adjustment

Connect an accurate tachometer then warm up the engine. Let it idle in Park with a/c off. Pinch off the hose between the air intake and the IAC valve (don’t damage the hose with something sharp!) Idle speed should drop below 500 rpm, or the engine may stop: both are normal. If idle speed does not drop, adjust as below. First remove the hose clip.

Then goes on:

2. Adjusting the Idle Speed

On the side of your throttle body, there is an adjustment screw. Loosen the lock nut. Start the engine and turn the adjustment screw until idle is 480-520 rpm. Switch off the engine and tighten the lock nut while holding the adjustment screw so it doesn't turn.


How does one get the idle down to 480-520 rpm, as stated in step 2, without having the hose feeding the IAC valve pinched off, as the directions at the end of step 1 one tell you ("First remove the hose clip.")?

Confused in SC-
Dallas






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