Speedometer doesn't work and it's not the sensor.

[Jayzeon]

I checked my speedometer with a multimeter and it read 0.5 when i spun it fast. and when it was placed back into the transmission it read about .7 in first gear with the car on blocks but the speedometer still didn't move.

What could be the problem?

[180fan]

possibly your speedo or the wiring in between if you say the sensor's fine.

[navysnail]

do you have the HUD speedo

[s13sr20chris]

speedo head is common failure item. go junkyard.

[Jayzeon]

no it is not electrical, but now it goes up slower than I'm really going, and then when I know I'm doing about 50 it reads about 75. Would the Ecu have anything to do with it?

[IvoryJ30t]

no, the speedo feeds the signal to the ecu, not the other way around.

[ILikeMy240sx]

1. Check the harness of the spdometer

Check continuity of terminal 22 and body ground. If good move on. If not Repair harness or connector

Check voltage between terminal 21 and body ground. If you read battery voltage move on. If not repair harness or connector

If those two were good then it's your speedometer. Since youve already checked the voltage between 28 and 35(0.5V)... and the circuit is good so it's your speedometer

This is from the FSM. Also, refer to my thread as well.http://www.nicoclub.com/zerothread?id=87704

[Jayzeon]

Hey I will try that, but I am not sure what you mean about 22 and 21 terminal. I have taken out the speedometer cluster and check the connections visualy, but I will check the plugins for voltage, meaning the plugin that goes to the side where the speedometer is connected.

thanks for you help so far!!!!

[ILikeMy240sx]

i meant the terminals on the harness that connects to the speedo

[Jayzeon]

Yeah in the back of the cluster

[Jayzeon]

hey I just checked my ecu and the codes it gave me was 14,33, and 41 what is 41 code would any of these problems cause my car to shut down at 3500 rpm or above. when I say shut down I mean like if my govner kicked in. what 's up with that eh.

any info is helpful!