Code 24, VSS

[Richard Cooper]

I got a code 24 today. The book says its the vehicle speed sensor. It says to check the Park/Neutral switch and the park/Neutral relay. Can someone tell me where the P/N realy and switch are located? This is my 81 automatic. Is the P/N switch the switch that will only let the car start in Park or neutral? I tried to start the car in drive and it does not start. Also, how do I check the relay? Do I just turn the key to the on position and check to see if the relay clicks? Thanks for any help.

 

[Twin_Turbo]

The PN switch is on the shifter base, remove the shifter plate and you'll see it.

The VSS is a yellow or blue box on the pass side, above the fuse box. It just hangs behind the dash somewhere, it has a little flat calbe w/ black, red & green colors, the end of the cable has an optical sender/emitter pair and that plugs into the back of the speedo.

PN switch is the only plausible reason for not starting, VSS isn't.

 

[Richard Cooper]

Thanks Twin Turbo. I'm going to replace the VSS and the park/neutral switch next weekend. Even if they are not the problem they are still 24 years old. Take care.