94-95 1.8L no tach signal
#1
94-95 1.8L no tach signal
hi guys.
just installed the megasquirt yesterday, and the car is running great.
thanks very much for all the posts, they are a HUGE help.
I have followed this diagram
with 2 exceptions.
The first one wasn't hard. you have to connect the 2K(LG/W) to pin26 on the MS. this gives 5v to the TPS for it to work.
The other one is the on that I'm stuck with ....
from the diagram you have co connect 1B with 2I with a 1k resistor for the tach to work. The thing is .... it still doesn't work ....
Do I have to build a Tach output circuit in the MS and connect it?
Which one ?
what pin should I connect it to ? 2I ?
thanks again guys
just installed the megasquirt yesterday, and the car is running great.
thanks very much for all the posts, they are a HUGE help.
I have followed this diagram
with 2 exceptions.
The first one wasn't hard. you have to connect the 2K(LG/W) to pin26 on the MS. this gives 5v to the TPS for it to work.
The other one is the on that I'm stuck with ....
from the diagram you have co connect 1B with 2I with a 1k resistor for the tach to work. The thing is .... it still doesn't work ....
Do I have to build a Tach output circuit in the MS and connect it?
Which one ?
what pin should I connect it to ? 2I ?
thanks again guys
#8
I have a 1k resistor soldered on the 2I ...
Just noticed that when I put 12v on the resistor leg the tach moves....
If I do on/off/on/off very fast ( the fastest I can ) I manage to get the tacho to read just above 1k rpm...
This means I need to put the MS to feed it with a 12v square wave right ?
this schematic should be enough right ?
Just noticed that when I put 12v on the resistor leg the tach moves....
If I do on/off/on/off very fast ( the fastest I can ) I manage to get the tacho to read just above 1k rpm...
This means I need to put the MS to feed it with a 12v square wave right ?
this schematic should be enough right ?
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