Vacuum Supply

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect vacuum hose at speed control servo. Install vacuum gauge to disconnected vacuum hose. Start engine and observe gauge. Vacuum reading should be a minimum of 10 in. Hg. Turn engine off. Vacuum should continue to hold at a minimum of 10 in. Hg.
If vacuum is not as specified, check for kinked or leaking vacuum lines, defective check valve, defective vacuum reservoir and/or poor engine performance. If no problems are found, check servo. See SPEED CONTROL SERVO under TESTING.