What is the problem if the odometer of my 1991 Plymouth Acclaim does not work and I have replaced my gauge cluster Assembly multiple times and each time my odometer still does not work.

you need to replace the speedo cluster

There have been several issues with the instrument clusters in the Voyagers and Caravans. The circuit board can have cold solders at the plug connection causing an intermittent failure of the instruments. The fix is to remove the trim under the dash, around the steering wheel and in front of the cluster. This can be done with just a phillips screwdriver and some patience. Once this is out of the way there are 4 screws that hold in the cluster. Remove the cluster, and with a low temp solder gun, heat the solder points where the plug connects until they are liquid and reset themselves. Reassemble the cluster and check them before you put the dash assembly back together.

Try replacing light bulbs and flasher which may correct the turn signals. Check all fuses, however as for the speedometer, the plastic clogs or wheels have run their course, If you intend to replace these, suggest you purchase a repair manual for your vehicle.

I had the same problem with my 1991 Plymouth Acclaim 3.0 liter engine. Check to see if your SBEC (computer located next to car battery) has gone out. Replacing it should solve your problem.

If the speedometer is working but not the odometer it's in the speedometer it's self. replacing the speedometer cluster is the easiest their available on ebay or your local salvage yard.
what happens is the trip odometer wears and sticks, theres a small motor on a circuit board with a plastic sun gear, inside the speedometer housing. it drives both the odometer and the trip odo
the teeth strip off the sun gear and odometer stops.

Go to (autozone.com) & sign up for free access to manuals & parts prices.

Sounds like some major wiring issues', Does the Car not get driven much? If a mouse got in the engine compartment its very possible that they could've chewed threw the wires, Check the Fuses, and also the connections in the Fuse Block and at the connections to the accessories, then also check the relays, if nothing shows up either in the engine compartment or in the passenger compartment you will have to go through the wiring harness'

it is the switch where you turn the lights on

OdometerGears.com has the gears you need to repair your odometer. E20=20 tooth gear and a 16 tooth medium pod The two gears together are $54.00 including the shipping. it is best to replace the gears as a set if you never want the odometer to fail again.

hi there here is the answer to your question.....the heater motor or blowere motor is located in the dash under ur radio..it will be an easy find once you have removed the radio...let meknow if u have any other questions thank you