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Only one thought, how about putting the second timing map enable switch on the mode shifter. 2nd map enables only in 4hL or 4lolocked?


Yep. That's easily doable. The F/IC just requires that the line be grounded, so I can tap a relay into the 4WD circuit and patch that into the F/IC wire in place of the LED switch I have now.

That's a good idea. Hadn't considered that.

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I bet your load is derived from tps position. What would happen if you also enabled some extra resistance in the tps signal circuit in the above two modes, or perhaps in 4LL only?


Load on the F/IC is from a built in MAP which is taped into a vacuum port on my manifold, and the timing and fuel changes in the F/IC are based on that.

I'm not sure what you're getting at with the TPS, though. ??

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Guess I spoke too soon. <img src="/forums/images/graemlins/frown.gif" alt="" /> I thought I had a bad #3 injector, but after changing that out it looks like the #3 injector driver in the F/IC is faulty. No problems in the injector harness or the F/IC harness that I can see so unless it's in the main harness to the ECM ... sigh. Oh, well, can't have things go TOO well. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

Edward

'97 Montero Sport LS 5-Speed 3.5L conversion
SAS Dana 44s & ARBs, 35" Yoko Geolandar M/Ts
NP231 B4R doubler/Terra Low231/RP 5.38 229:1
'99 Montero Sport Limited 4WD SAS 3-link project
'03 Montero Sport Limited AWD
'97 Montero Sport LS 5-Speed 4WD