4AGZE Autronic Tacho dramas

[Sprinterboy]

Hi All

I have a 4AGZE setup in my sprinter, been like this for a while now, and I have no tacho. Now before I get neg rep'd i've found the thread to convert the stocko tacho in the cluster

http://forums.toymods.org.au/index.p...t=0#msg_828470

But I am in the middle of making my own dash and want to run a tacho and a VDO speedo too. I've found the sender I need from the gearbox to make that work all fine and dandy, But the tacho I'm still puzzled with

Can I use a motor bike one??

http://www.egauges.com/cyc_mult.asp?...ries=Pro-Cycle

I'm aware that the reason I can't use a "normal" one is something to with the pulse from the igniter and sending a signal like a 2cyl motor(?)

I'm running an SMC and as far as i'm aware there is no tacho output from the puter that I can tap into....

I've never been very good with elec's so any help on this would be great.... Cheers

J

[30psi 4agte]

Doesnt Autronic have a dedicated taco output wire that gives a std signal to all taco's ?

Surely a ECU such as Autronic has this.

[Sprinterboy]

as far as I'm aware, the SMC doesn't..... (not happy Jan!!!!!!)
I think the SM2 and SM4's do tho.

[Sprinterboy]

may have found an answer........

http://www.autronic.com/page_files/sensors.htm

[The Witzl]

umm... the output of the 4A-GZE ignitor is not a 2-cylinder signal as you suggest... its a lower voltage square wave signal with the correct frequency, just different type of signal waveshape.

Get yourself a tacho booster, and you will be set - that is unless the VDO gauge will work directly off the ignitor's tacho output (it should do?)

[ivan]

This might also be of use to you if you still get stuck.

http://www.autronic.com/technical_da.../tacho_adp.pdf

And the SMC/SM2 do not have a dedicated tacho output signal. The SM4 does.

Ivan

[Sprinterboy]

Thanks Guys!!!

[TurboRA28]

I wouldn't buy rall halls tacho boosters.. pieces of poo. i've tried two and both didn't work. plus they dont give refunds on faulty products.