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Mk1 Escort tacho

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Mk1 Escort tacho

Posted by Jason Sutherland at October 22. 2011

hey guys,

 

i have a MK1 escort with a 6 dial dash. Link g3 with g4 firmware running a turbo sohc2000.

question is the tacho had a inductive loop that the power wire to the coil would normally run through.

this is how the tacho recieved its signal. is there a way i can replacate this by triggering some sort of solid state relay powering

a resistor through the inductive loop? or am i way off the mark.

 

Cheers Jason

Re: Mk1 Escort tacho

Posted by Stevieturbo at October 23. 2011

Didnt it take a neg trigger off the coil like most rev counters ?

 

What ignition setup are you using now ?

 

And have you tried simply inputting an aux out signal to the tacho input ?

 

Whilst not ecu specific, you could ask over on the Turbosports Forum. Lots of Mk1 Escort users there, and I'm sure someone has come across this before

Re: Mk1 Escort tacho

Posted by Jason Sutherland at October 23. 2011

nah, well not my one, it has a loop wire that you unplug and wrap around the power feed to coil then re connect.

im using single coil with dizzi running from link.

it needs to replcate a load simular to a coil to make the tacho go.

yea i should ask in the uk, just thaught the people at link mite have come across this before.

Re: Mk1 Escort tacho

Posted by Stevieturbo at October 24. 2011
If you're using a single coil and dizzy, surely nothing much has changed ?
 
Just route the trigger wire to the coil -ve terminal through the inductive loop.
Or the power wire to the coil.
 
The actual coil operation is no different than previous ?

 

Re: Mk1 Escort tacho

Posted by Jason Sutherland at October 24. 2011

true, except it will mean stripping the loom back and re-routing the feed wire.

found out it called a impulse tacho, common for the 60's and early 70's. triggered by pusles on current rather than voltage.

Re: Mk1 Escort tacho

Posted by Simon (Link Staff) at October 30. 2011

You will have to get the pickup on to the coil negative wire.

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