frederickhsu

Anyone please help! I tried everything, the sweep test, cleaning the VSS, Fuse,. Not sure what else to do to fix just bought the car too. RPM, fuel, temp, gauges all work. Only MPH doesn't, it tries to but about 50% of the time it doesn't.

http://ibb.co/kQHivk

ezone

Got fault codes? Got scanner data that shows a working and good VSS value (speed) but speedometer does not match it?


Did speedo needle work then?
No? Replace cluster or send it out for repairs.

frederickhsu

it works half the time ..

ezone

Drive it half the time !!!

frederickhsu

lmfao. Should've thought of that. Idk why but it usually works after the car bakes in the Arizona sun lol

ezone

Go back to post #2 and see if you can answer those questions. Here's why:
The speedo, tach, and temp gauges operate using data straight from the PCM through a communication network.

If there are VSS related issues found in the PCM (codes and live operating data), start there.

If the PCM shows no codes related to VSS, and if PCM live operating datalist reflects true vehicle speed while the speedo quits working, the problem is in the gauges (probably a bad stepper motor)

frederickhsu

im not good with electronics, how would I pull the codes from? I have a OBD2 with USB but is there a program I could use? You think I can replace a stepper motor ?

ezone

Did it come with instructions?


Those two lines would seem to be mutually exclusive.

You would probably replace the whole cluster as a unit or send it to a speedometer shop for repair (if that's even a possibility)

frederickhsu

the OBD2 to USB was from my motorcycle. Lol. Yea I see what you mean. I'll look into it more. I definitely appreciate the help