Plymouth

I have a 1999 Plymouth Grand Voyager, recently the speedometer started
acting up, reads 0 below about 65 MPH, then reads correctly, transmission
does not shift correctly, until speedometer reads correctly.
Engine service light is on, A/C functions intermittently.

Once the speedometer comes up , the transmission, and A/C will work, even
after it goes back to zero. Once I stop, all reverts to the problem.

I have checked all of the fuses, and all are good, and making good
connections.

Hope this makes sense, any help or suggestions would be greatly
appreciated.
Thanks,
bill

 

There is an output speed sensor located in the transmission housing which in
your case is going bad. Check the connector and if it looks clean and dry,
replace the sensor. Cost is reasonable and it is fairly easy to access from
below. Do not overtighten as the sensor case is plastic.

The bottom line is that this is a cheap and easy problem to fix.

Bob

 

Bob, Thanks for the rapid reply, can you be more specific about where that
sender is located? I am old, so want to stay under the vehicle as short a
time as possible.
Thanks,
Bill

 

Prime suspect: Transmission output speed sensor and/or its wiring.

 

I did mine a couple years back and have also replaced on other vehicles
since then so this is from memory ... and may well be wrong. (I'm sure
others who know will let me/you know.)

The sensor was located under the driver side of the vehicle pretty much
behind the left front tire up on the side of the transaxle. You will see it
pretty clearly and it has an electrical connector that needs to be removed.
I'd suggest purchasing the replacement first so you know what you are
looking for.

Bob

 

I stopped at the auto parts store this afternoon, and picked up a switch,
so I am set there. I checked the two differant manuals they had there
Chiltons and Haynes, and neither one showed the switch location. So I
will be crawling under the van in the next few days and will see what
happens then.
guys thanks for the help, and I will give feedback in a few days as to
what the results are.
Thanks All,
bill

 

I changed out the switch today, and everything works fine now.
The switch was located on the top/front of the transmission, on the
drivers side, very close to the shifter input to the transmission.
Removed the air cleaner for access.
The old switch had cracks in the body from the heat over the years.
Again, Thanks to all that replied.
bill