so my mph gauge works only sometimes
I don't get any check engine so I don't know what it could be

 

If CEL is on, check the CEL FIRST!!

If the CEL pertains to the speedo sensor, ding ding ding, it's probably just the sensor located ontop of the transmission.

If CEL is NOT on....
Problem: The speedo doesn't work but the odometer works.
Solution: Replace the cluster or just replace the speedo gauge

Problem: The speedo doesn't work AND the odometer doesn't work.
Solution 1*: Bad Sensor - Replace the speedo sensor in the transmission.
*CEL should be on
Solution 2: Bad Gauge - Replace cluster or just replace the speedo gauge
IF Neither solution above fixed it.
Solution 3: Check all wiring from the sensor to the gauge. Because the signal is disrupted somewhere.

 

unplucg your speedo from the wiring harness and unpin all 3 wires and clean them, there re pin in the right order, and there you go it works

 

thx ill try it out see what works