Electronic EGR System 6-Cylinder And V8 Models
- With engine stopped and cold, connect voltmeter to gray wire at EGR solenoid. With parking brake set, start engine. Voltmeter should read less than 1 volt until engine has reached normal operating temperature and electronic EGR schedule has timed out.
- Solenoid will de-energize when EGR schedule has timed out and voltage should read charging system voltage. If not, replace solenoid and repeat procedure. If voltmeter indicates charging system voltage before EGR schedule is complete, replace computer or external mounted timer.NOTE: 5.2L (318") 2-Bbl. Federal V8 has no coolant temperature thermal delay above 60°F ambient air temperature and will follow EGR time delay schedule only.
- If engine is restarted while still at normal operating temperature, EGR solenoid will only be energized for length of time delay schedule. It will then de-energize.