tach signal problem

hyperman · Post by **hyperman** » June 18th, 2006, 2:44 pm

I've hooked up msII but i'm not getting a tach signal. I've already tried to pick up the signal from the ecu pin 3E and at the distributor, the blue/yellow wire. These should both give me feed back but i'm getting zero. What could cause this and what should I try next cause i'm running out of ideas.

ariesdude · Post by **ariesdude** » June 18th, 2006, 3:59 pm

The Yel/blu wire takes the tach signal from the disty and runs it to the tachometer in the dash. If its a stock/unmodified disty and if your tachometer is working then the yel/blu wire should have the tach signal.

You didnt metion the year of the car or the ecu - For 92 models pin 3E seems to be one of the cam sensor signals - the tach signal might be available at pin 1G which is actually the firing signal that goes to the ignition module - it might be (phase shifted and) too weak for any practical purposes.

hyperman · Post by **hyperman** » June 18th, 2006, 4:09 pm

I'm running a 94 kl-ze with a modded k8 ecu and a 4 pins hei.

ariesdude · Post by **ariesdude** » June 18th, 2006, 4:20 pm

Do you have the external coil?

jschrauwen · Post by **jschrauwen** » June 18th, 2006, 5:35 pm

Is the colour coding on the E-Spec (Dutch) MX's the same as the NA MX's? Perhaps we're looking for the wrong colour-coded wire. I believe there's an inline resistor that's associated with the the tach signal also.

hyperman · Post by **hyperman** » June 19th, 2006, 5:09 am

ariesdude wrote:Do you have the external coil?

No, I don't have an external coil.

hyperman · Post by **hyperman** » June 19th, 2006, 3:12 pm

I've got my tach signal but unfortunatly my battery isn't full enough to give it a good start. Now i have to wait till it's fully charged