Fifth Avenue V8-318 5.2L VIN P 2-bbl (1983)
Carburetor Switch: Testing and Inspection
On most systems, grounding the carburetor switch eliminates all spark advance.
1.
With ignition key in Off position, disconnect 10-way electrical connector from computer.
2.
With throttle fully closed, connect an ohmmeter and check continuity between pin 7 and ground. If there is no continuity, check wire and
carburetor switch. Recheck basic ignition timing.
3.
With throttle opened, check continuity between pin 7 and ground. There should be no continuity.