One of the most frustrating issues I had with the Viper involves the air conditioning. In the hot Florida weather, AC is very important and while the Viper’s AC isn’t overwhelming, it’s more than capable of getting the job done, except when it does not blow. The issue here is the vacuum actuated blower doors. The air conditioning uses vacuum from the intake manifold to power and open the air ducts. The problem here is once you touch the throttle and the engine stops producing a vacuum, the AC doors slam shut and you no longer get air blowing through the vents. It took some research to find this issue that can be solved with a $5 one-way check valve.
What is needed is High-Use Plastic Check Valve, Nylon Body/Fluorosilicone Diaphragm, 3/16” barb (Part # 47245K26) and 1 foot of High-Tep Silicone Rubber Tubing, semisoft, 3/16” ID, 5/16” OD, Opaque Black, (Part # 51135K172) is also necessary for $0.95.
With the valve installed to 2 inches of the 3/16” black tube with the black side facing the intake manifold, there is now vacuum holding the AC doors open at all times and you can stay cool in the Viper even on a hot day.
Page 1 – Oil Change
Page 2 – Oil Change, Power Steering Tube, and Spark Plug Wires
Page 3 – Spark Plug Wires and Spark Plugs
Page 4 – Quality Wires & Stock Temperature Gauge Values!
Page 5 – Stock Water Temp Sending Unit & Roe Silicone Hose & Bleeder Kit
Page 6 – Coolant Concentration, Cap & Water Wetter
Page 7 – AC check valve & Water Temp Gauge install
Page 8 & 9 – Water temp gauge install