No Tach with new ECU
#1
No Tach with new ECU
So I have a 93 rx7 which previously had an Electromotive Tec3R. Since I have replaced it with a Microtech LT-16c. The only issue I am having is that the tach does not read but it does display on the laptop program. The tach worked fine with the Tec3R. I connected the Yellow w/ blue tracer (car side) to the Microtechs Blue W/ white tracer. I have continuity between the two wires. I checked with a test-light and the connection showed voltage. So I cut the connection to see where it was coming from, and found that with the key on the car side Y/blue is showing 12v when I connect the two wires and check with a test-light you can see it flicker when the engine is cranked but the tach does not move. Is it possible that there is a way to turn on tach output in the programming, and it's possible that it's turned off?
Other than that the ecu is working great the green and yellow light are light the red is not. The car starts and runs no problem just the tach issue
First startup on the new setup...
Other than that the ecu is working great the green and yellow light are light the red is not. The car starts and runs no problem just the tach issue
First startup on the new setup...
#2
RX-7 Bad Ass
iTrader: (55)
You need to trace that wire and see if it's getting to the tach. When you changed out your wiring it's possible that connection was broken. If all else fails you could tap into that yellow/blue stripe wire and run it to the appropriate input to the instrument cluster.
Dale
Dale
#3
You need to trace that wire and see if it's getting to the tach. When you changed out your wiring it's possible that connection was broken. If all else fails you could tap into that yellow/blue stripe wire and run it to the appropriate input to the instrument cluster.
Dale
Dale
#4
RX-7 Bad Ass
iTrader: (55)
That wire is fed from the trailing coil, that produces the tach output. Obviously it's getting to the ECU it just isn't getting to the tach.
Find out if the wire going into the back of the tach is getting a signal. If not, wire it up, if it is, you may have just had your tach die, not an uncommon problem.
Dale
Find out if the wire going into the back of the tach is getting a signal. If not, wire it up, if it is, you may have just had your tach die, not an uncommon problem.
Dale
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rgordon1979
3rd Generation Specific (1993-2002)
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03-15-22 12:04 PM