I forgot to mention this, but after I found the list of supposedly defective parts in the glove box I took the throttle position sensor (TPS) off and tested it out. Having done this, I must admit that my previous description of the switch was inaccurate. The 240 is much more primitive in its engine control than more modern cars. It does not measure the exact position of the throttle. Instead it merely tells the ECU when the throttle is closed and when it is wide open. The connector has three wires. One is the ground, one is for “throttle closed”, and the remaining one is for “throttle open.” Testing it means making sure there is continuity on one or the other pin (depending on if the throttle is open or closed) and the ground, and mine was fine. So I feel OK with crossing that off the “glovebox list.”