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Location:
sunny coast, qld
Registered:
October 2002
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1jz tacho problem
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Tue, 28 June 2005 13:36
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Hi guys,
I have just been trying to wire up my tacho. If you don't know it is a 1jz-gte engine running off a wolf 3d ecu and I have the jzx90 chaser dash in my car.
Since the car has been running the tacho would jump a little when I cranked the engine over and as soon as it started running it would go back to 0 and not move. I am not sure why but I assume it is dodgy wiring from dodgy mechanic.
So I thought I could fix this by running the tacho output from the wolf directly to the tacho.
The tacho output was on a plug which also has ignition ground, ignition 1,2,3 &4. I cut the wire off for the tacho output and wired it directly to the tacho wire that I found from the jzx90 wiring diagram. I connected the ignition ground to ground.
Cranked it over and exactly the same thing happened? Didn't change a thing. Any idea on how to fix this?
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Location:
sydney
Registered:
March 2003
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Re: 1jz tacho problem
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Tue, 28 June 2005 21:26
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if u r runnin the tacho from an output on the ems then u will prob need a tacho booster
i have fitted these before to microtechs and ems ecus
if it was runnin ok before hand of the 1j ignitor then maybe the ems has a slightly different signal to it
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1jz tacho problem
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Tue, 28 June 2005 22:35
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It didn't work before off the igniter.
If it jumps to 500rpm and then goes straight back to 0, is that a usual case for a tacho booster?
It just seems strange to me that it can be getting its signal from a totally different source and it does exactly the same thing.
thanks
Chris
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Location:
Newcastle, Australia
Registered:
March 2005
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Re: 1jz tacho problem
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Wed, 29 June 2005 04:29
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Give the guys at Sixworks a call, they make tacho boosters, and might tell you if you need one from your descriptions of the problem.
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