Is the speedo sensor on the transmission where the ecu gets the rpm tach signal? casue ive been trying to receive a tach signal for a while and my car still gets no tach signal even from the ecu wire itself. IF anyone has any info let me know. Thank you.

 

tech signal, I think the ecu get the info from ignition system.

 

I think the ECU uses the crankshaft or camshaft position sensor for RPM. You usually need to calibrate whatever device you are using to receive the RPM signal from the ECU.

 

aight thanks guys, casue my tach still gets no signal, not even from the ecu itself, and im just trying to figure out where the car recives the signal from. If anyone has anymore infromation on this let me know, casue im picking up my wideband friday with the rpm converter, and I have to find a signal somewhere.

 

i think it's the ref crankshaft sensor the one between the tranny and motor not sure though

 

I thought there was a signal on the back of your tach