Getting tacho to work with E40 ecm

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Jul 22, 2009 | 07:30 AM

Ls2 cruiser

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Getting tacho to work with E40 ecm

Howdy, This is my first post on this website, but I thought members may be able to help. I have a supercharged Ls2 in a 2000 model Landcruiser ute with a built 4L65E auto. I am using the E40 ECM and T42 trans computer. I am having lots of trouble selecting the correct HP tuners setting for the tacho output so that I can recalibrate the original landcruiser tacho. Crank and serial seem to give hardly any signal. There are apparently 3 settings. Can someone tell me which one we should use. Cheers Russ

Jul 23, 2009 | 11:03 AM

Schwanke Engines

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Crank, 15, 15, 300ohm resistor pulled up to 12volts on the signal.

Jul 23, 2009 | 07:05 PM

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That sounds like the way to fix the E38 ecm. Are you sure it works for the E40? Cheers Russ

Jul 24, 2009 | 03:58 AM

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Crank output seems correct for the tacho for the E38 ecm, but does not seem ok for the E40 ecm. My loom maker autoelectrician in Sydney and I have both come across this. Are you positive. Cheers Russ

Jul 25, 2009 | 10:19 AM

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Quote:

Originally Posted by Ls2 cruiser

Crank output seems correct for the tacho for the E38 ecm, but does not seem ok for the E40 ecm. My loom maker autoelectrician in Sydney and I have both come across this. Are you positive. Cheers Russ

That is what I did for the E38, so I guess for the 24x crank, use 6 and 6, not the 15

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