You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
612 CHAPTER <strong>26</strong><br />
AIR VANE<br />
DAMPER<br />
AIRFLOW<br />
INTAKE<br />
TO INTAKE<br />
MANIFOLD<br />
t<br />
BYPASS AIR<br />
SCREW<br />
AIRFLOW<br />
INTAKE<br />
TO INTAKE<br />
MANIFOLD<br />
t<br />
BYPAS$ AIR<br />
SCREW<br />
Figure <strong>26</strong>-22 A typical air vane sensor. (a) At idle the air<br />
flows through a bypass passage. The bypass air screw is<br />
adjusted at the factory and should not require adjustment.<br />
(b) As the throttle is opened,the airflow moves the vane.<br />
The vane is attached to a potentiometer similar to a<br />
throttle position (TP) sensor.<br />
Figure <strong>26</strong>-23 A typical air vane sensor with the cover<br />
removed. The movable arm contacts a carbon resistance<br />
path as the vane opens. Many air vane sensors also have<br />
contacts that close to supply voltage to the electric fuel<br />
pump as the air vane starts to open when the engine is<br />
being cranl
Change language