Issue with my MS resetting and EDIS losing tacho output

[Noddle]

Hi,

 

I have been trying to track down my MS reset issue, and I have a question about EDIS and the tacho output,

 

my EDIS is using the 3 x diodes to make my tacho work, when I have the reset issue (2-4 seconds), my taco drop to 0 RPMs,

 

when this happen, the EDIS module still has +12V to it (l i have a lights connected to the power wire to it, at the module itself),

 

I though that EDIS would still give out a tacho output, even if MS resets, since the engine is still turning over, even though it's dead

 

any ideas ?

 

and you can hear the fuel pump relay click when this happen, and click again when it fires back up

 

Nigel

Edited January 20, 2011 by Noddle

[Noddle]

After much trial and error (my Magnecor KV85leads look very nice),

 

I tracked it down to the pickup lead,

 

looks like it got hot, it was near the exhaust manifold,

 

when I cut it open, the 2 wires inside had melted through their insulation,

 

I assume in 2nd and 3rd gear hard pulls, it would flex enough to touch together, thus cutting sensor input (killing my tach signal / making MS reset)

 

moral of the story, check your cables, don't have anything near extreme heat.

 

I hope this helps someone else, it was very frustration to say the least.

 

but I'm a happy camper now..

 

Nigel,

[mobythevan]

good find