Speedo not working, traced as best as I can (Predator ECU)

[Mash]

I've had a predator ECU for a couple of years now and the speedo on the dash has never worked.

I've dropped Andy a PM on here but thought I'd ask to see if anyone else has had this problem.

The issues lies with the supply voltage to speed sensor on the gearbox. There is no 12v in on ignition and therefore no signal produced to be read by the clock.

The power comes from the main fuel relay which at the very minimum needs two 12v feeds and an earth. I've tested this on my work bench and then tested the loom so I know exactly whats happening (the following pin numbers are irrelevant)-

Pin 1 - 12v - OK
Pin 2 - 12v - OK
Pin 3 - Ground - Continuity to ECU OK, Continuity from ECU to earth strap OK

So to me it looks like the continuity is lost somewhere in the ECU, preventing the relay grounding. It's hard to test as the wires are isolated.

The next thing is to start splicing the loom to run tests but I am reluctant to do that.

Has anyone had this problem, or is this pretty rare?

Cheers

[iSlayeR]

I'm going to assume you've changed the speed sensor, and tried your standard ecu to see if it works with that on?

It seems these predator ecus can be problematic, mine doesn't communicate with my ICV correctly, your unlikely to receive a message from Andy on here either.

[Mash]

I haven't changed the speed sensor no, as there any isn't power going to it so the problem definitely lies before this.

Changing the ECU would definitely be a good idea - unfortunately that was sold years ago :(.

I've heard of a them failing on a couple of occasions in a similar fashion but never with the speedo sensor.

Is there another way to contact him do you know?

I'm a bit scared to take it apart as I may break it further.

[iSlayeR]

here's his email address andyhammond@yahoo.com

[Mash]

Thanks bud :)