Re: Dad's 5677A

Posted by HH56 On 2020/12/14 11:42:35

If the car has a pushbutton shift the orange wires would go to the pressure switch. That switch would be a round can approx 2" in diameter and an inch or so thick having two bullet type female terminals on the end. It is located on the drivers side of the transmission case about in the middle and above the shift actuator. If the wires were disconnected the pressure switch was probably faulty. First symptom of a bad switch would be a failure to start the engine in P or N because the start relay would not close to pass the start signal from the ign switch to the solenoid. It was designed as a safety to prevent accidental selection of park, neutral and reverse via the PBs if the car was going faster than 5mph.

The access plate on the bottom does not give a lot of room to do much but it is possible to get to the drain plugs thru the opening. You may need to rotate the converter slowly to be able to see the plugs as they move quickly past the open area. Loosen one plug to provide an air path and rotate the converter another 180 to remove the second plug for the drain. Just don't forget to tighten both of them when the converter finishes draining.

On the heat control valve, used are out there but good ones and NOS are getting harder to come by unless you are in the right place at the right time. Packard used an odd diameter and configuration to fit inside the manifold and exhaust pipe. Along with a different spacing for the bolts, to be best of my knowledge no one has found a modern inexpensive and easily available valve that fits.