I have a 2000 Dodge Stratus. My speedometer stops working, rpms running high and check engine light is on. Diagnostic came up with codes for transmission. Had new fluid and filter installed. Speedometer worked for 3 days now back to the same problem. Dealer states it is a more entailed transmission problem since codes on the diagnostic indicated that and the quick fix did not work.

SOURCE: Diagnostic code PO442

PO442 is an Evaporation Emission leak. It's probably a loose gas cap. The fix would be $96.00 at our dealership, since your truck is out of warranty. You may be able to get it fixed cheaper, but you'll be charged a diagnostic fee.

SOURCE: Speedometer repair

STEP 1: speedometer Removal.

Using a cloth covered screwdriver, gently pry the speedometer out from your dashboard. The rubber ring around the edge comes out too, so get under that with the flat screwdriver and pry out. Do NOT use the neighboring gauge as a leverage point. The black trim ring is very easily scratched. Once you get it started you should be able to get your hands on it and pull it out. Unplug the connector and head to a clean work area.

STEP 2: Dis assemble Speedometer

TRIM RING: Remove the rubber grippy retainer ring. Remove the 4 screws from the back of the unit.



Now the soft metal trim ring needs removed by gently prying around the entire edge of the assembly to bend/lift the edge over the lip of the outside housing. This isn't pretty, but goes slow. Be careful not to scratch the ring beyond the lip. You won't see what you have done to it once the rubber retainer goes back on so don't worry about chewing it up a little bit. Keep slowly prying around the edge until it can be pulled out.



STEP 3: Trip meter reset button removal

There is a thick post over the thin post of the reset button. Support the button assembly below and pull the top off. This will take some pressure, but be sure to brace the assembly from below so you don't pull too ******* the lever where it clips to the drive gears.
Note: where the shaft gets thinner, that's where it separates.



STEP 4: Speedometer needle removal

This is the trickiest part of the job. The needle is pressed onto a shaft that is extremely thin. It feels like a pretty tough metal, but you HAVE to be careful here. Do not pull straight up. Do not put any torque on the shaft. Rotate the speedometer needle clockwise until it hits a stop point. Gently continue to rotate the needle while lifting up gently at the same time. The friction is all that is holding the needle to the shaft. Keep turning and prying until the needle comes off. Do not force it. I don't know that that shaft assembly is user replaceable.

Note: See how small the shaft is:





STEP 5: Dis assembly
You've come this far, there is nothing stopping you now. Take the two screws out of the faceplate.

Remove the circuit board -




Remove the motor -





STEP 6: The guts

Once the motor comes out, you will get to the drive gear and pod. Inside the pod is going to be your broken gear. Replace it with your new gear.



STEP 7: Reassembly of speedometer

This is completely reverse of everything else. Nothing is too tricky. Continue to take your time paying particular attention to the needle shaft. When reinstalling the speedometer needle, make sure you rotate while gently pushing down. Never simply compress the needle onto the shaft. Once it is in firm enough, use the stop points at max speed and 0 mph/kph to realign the needle with 0. Once everything is back together, also gently recompress the trim ring around the back of the speedo housing. You could use a black permanent marker to cover any scratches. Plug the unit back into the dash and reinsert into your gauge opening. Hopefully all is now re-recording miles.
Again, this is a VERY easy job. Not easy like a tire change - but only because you are dealing with a delicate instrument. If you have big, clumsy hands, you might want to forgo this exercise and send it to a pro. If you can be gentle with this, you should be OK.

Found this great how to guide at - http://p-car.com/diy/odometer/

SOURCE: 2002 DODGE GRAND CARAVAN STUCK IN 2ND/3RD, NO SPEEDOMETER...

the tcm is located in the fender well behind the bumper drivers side black box check the wiring for bad cannection,

let us know what you find there are thousands of us with the same problem

dan

SOURCE: Speedometer Conversion

personally i find that that is a waste of time any money for the reason that he should know or be taught the conversions such as 60 mph to 100 km/h and the basics and it probable would not be cheap if you want to get it done right.

Harvey N Tawatao

• 3854 Answers
• Posted on Apr 23, 2009

SOURCE: Speedometer/odometer/cruise control isn't working.

It's your speed sensor at the transfercase on the drivers side i believe. Check the wire and clip to the sensor for any break or loose contacts. 
Easy fix and is about a 30 min job to do with simple tools. Un-clip the wire conntection, remove the retainer bolt and slide and sensor out. To install just do everything in reverse and add transmisson oil if needed.

Most of the time, it's going to be the sensor. Keep in mind that there are two sensor's so make sure it's the one on the output shaft at the transfercase. The other one is closer to the front of the transmission on the same side with is the input Volosity speed sensor.
If it was your ABS sensor, you ABS light would come on in your dash.
Good luck and hope this helps