Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chrysler >> 1990 >> Imperial >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater System >> Testing >> Vacuum Control System Test >> Notes

Vacuum Control System Test: Notes

NOTE: Test of push button control panel determines proper connection and functioning of vacuum and electrical circuits. Prior to starting this test ensure that vacuum source hose is tight on its connection at engine intake manifold. It is possible for a system that works normally at low engine speeds to malfunction at high engine speeds and low vacuum.
scientia non olet · About Mike's Workshop Manuals