No Tacho

[Guest]

sorry if this is in the wrong section but hope it helps someone out there

had a legnum in that's tacho didnt work
so had read threw a few posts from people on the site
* sorry for not remembering your names *
in one of the posts it said that the rpm signal pin * connector 3 pin slot 8 *
should have 0.25 v to it . i then went and tested mine and found i had 2.4 - 2.5 v to it . then checked to make sure i was checking the right wires ... i was .
so back to looking at wiring diagrams and thinking =.= ....
on the pg2 of the ecu wiring diagram there is a ignition failure sensor
* ignitor* .and the long and short of it . is that was our problem . replaced that with one off a differant legnum and the tacho worked.... sorry if this doesnt help any one . but if it does then it was worth the pain we went threw * u must take the engine cover off to see it *

 

[smohekey]

Sometimes known as a knock sensor, if I'm not mistaken.

 

[Guest]

nope, not a knock sensor thats located elsewhere further down the block

its the IFS.... ignition failure sensor

and i could have diagnosed that problem in about 30secs,
its semi common issue across the mitsi turbo range

 

[bradc]

Nope, completely different things. The ignition failure sensor does funny things sometimes.

 

[smohekey]

Ah, so where is the knock sensor then?

 

[Guest]

the knock sensor is in the valley between the two heads

 

[BuzzPuppy]

Hey, this may be what I'm getting with no tachometer readings off the A'pexi RSM or the dash anymore where it used to be an intermittent fault.

Now all i need is the diagram