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DELOREAN WORKSHOP MANUAL - Free

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Fuel Emission and Exhaust System D:01:13<br />

LEFT RIGHT<br />

IDLE CIRCUIT<br />

The throttle body on the PRV V-6 engine contains<br />

an air adjusting screw (1) and two air balancing<br />

screws (2 and 3). These adjustment screws are not<br />

used on the De Lorean since an electronic idle<br />

speed control system is used. The air adjusting<br />

screw (1) should be fully seated to eliminate any air<br />

bypass at the throttle plates.<br />

The idle speed regulator (5) allows the proper<br />

amount of air to bypass the closed throttle plates<br />

during an idle condition.<br />

1. Air Adjusting Screw<br />

2. Balancing Screw-Left Bank<br />

3. Balancing Screw-Right Bank<br />

4. CO Adjustment Screw<br />

5. Idle Speed Regulator<br />

Fig. 15<br />

The CO adjusting screw (4) is used to control the<br />

amount of injected fuel in relation to the position of<br />

the air sensor plate. Turning this screw will<br />

increase or decrease the air-fuel ratio. This<br />

adjustment is performed at the factory and the<br />

access hole is plugged. Fig. 15

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