No Tach or RPM on SAFC

[hellotbone]

Anyone come across this yet? I have no tach signal on my AFC or on my dash. This is after 6bolt swap but everything worked before hand. Can't do much with no tach signal to the AFC anyone know where to look or have seen this problem before?

 

[bastarddsm]

doulble check all you connections and grounds. maybee clean all your connections with some schotch brite. is it possible you pinched some wire's while putting it togehter?

 

[hellotbone]

Nah I have to trace where the ECU gets the tach signal cuz if the AFC has nothing then the ECU has nothing.

 

[hellotbone]

Does anyone know where the ECU pick up the RPM signal from? I am working if it takes it from the CAS? I know the wiring is done up right followed the directions to a T. Gonna have to get down and dirty with this maybe. When I hook the logger up tonight I will be able to see if it can read RPM or not and go from there, my feeling is though that it won't.

 

[houstonECLIPSE]

when my tach stopped working it turned out that my power transistor wasn't plugged in all the way. the power transistor is the one on top left in the picture below.

lupe

You must be logged in to view this image or video.

 

[hellotbone]

I'll check that thanks for the suggestion come to think of it the tach originally worked on the AFC but not the dash but now neither work. I will check that though.

 

[hellotbone]

when my tach stopped working it turned out that my power transistor wasn't plugged in all the way. the power transistor is the one on top left in the picture below.

lupe

You must be logged in to view this image or video.

THANK YOU that is what it was! Just unplugged it little die electric on it good as gold!

 

[houstonECLIPSE]

i'm glad that i was able to help.

lupe