RA. Checking the Throttle Housing Setting

RA. Checking the throttle housing setting

RA1




Checking the need for adjustment
- Warm up the engine.
- Connect an accurate tachometer.
- Engine idling
- Gear selector in the P position.
- A/C off
- Pinch the IAC valve hose with a hose clip.

Engine speed should be below 500 rpm. It is not a fault if the engine stops.

If this value is OK:
^ Remove the hose clip.
^ Return to fault tracing where it was interrupted.

If the reading Is incorrect:
^ Adjustment of Idling speed RA2.

RA2




Adjustment of idling speed
- Undo the lock nut for the adjustment screw on the throttle spindle.
- Turn the adjustment screw until idling speed 480-520 rpm.
- Switch off the engine.
- Tighten the lock nut. Grip the adjustment screw so that it does not rotate.
^ Continue with Follow-up checking RA3.

RA3




Follow-up checking
- Open the throttle and check the distance between the lever and the adjustment screw with a feeler gauge.
With a 0.45 mm feeler gauge there should not be any clicking sound from the idling switch when the throttle is closed.
With a 0.15 feeler gauge there should be a clicking sound from the idling switch when the throttle is closed.

If the distances are OK:
^ Return to fault tracing where it was interrupted.

If there was any deviation in any of the dimensions:
^ Adjust the throttle switch according to RC.Adjustment of throttle switch. RC. Adjustment of Throttle Switch