no more tach signal.....!

[ukmercman]

had megajolt lite jr on my 190e 16v for some time - mapped on the rolling road, all good.

tach signal was wired from the megajolt ecu and tapped into the wire for my stock rev counter - has worked for weeks no problems.

for no reason it stopped working one day. checked the wiring - all fine. swapped out the rev counter, still nothing.

how do i test that the megajolt ecu is still sending a signal?

many thanks.

[brentp]

Does the car still run smoothly with expected power?

You can check the voltage coming out of the tach signal on the Megajolt. What voltage do you read when the engine is running?

-