Toyota Powered VL Calais

[Holden202T]

looking good on the ignition side of things and the wideband!

question, the gear change, should it be that slow ? (approx. 1 second at WOT)

[VL400]

It came out of a luxury barge, so they are soft shifting.

I have only changed the accumulator springs and an internal pressure adjuster. The valve body has not had any work yet. The WOT shift in the log is using full pressure too (the control is a little different to a 4L60E).

[Holden202T]

ahh right, my next question was going to be weather you can play with tune settings .... guess not

[monaro308]

That makes sense,i also took it as milliseconds instead of mins and secs. doh
Can each coil be monitored ie say a lazy coil with a slight variation of dwell like the good ol' days of a vane scope showing a worn out lobe on the dissy?

[VL400]

It can only report what is sent to each coil (they are all monitored, so can get dwell and burn time for 8 coils), while they will be slightly different for each spark event (either the ign module or ECU has corrected for engine accel/decel changes or target dwell) it wont give any info on fault finding a failing coil as there is no feedback from the coil.

But there are no mechanical things to wear out in the ignition module, just smoke and mirrors

[Holden202T]

particularly the smoke hehe

[VL400]

Have been playing around with the force motor stuff lately. The A341E box uses a cable for overall line pressure along with PCM control of an accumulator solenoid. From what I can work out the idea is you soften the shift by turning on the solenoid a bit before and extend through the shift then switch off again. Varying the current with load, so WOT you do nothing and light loads more.

The Delco PCM controls line pressure directly but one of the extra functions is a shift pressure modifier. So by setting the line pressure to 96 (ie force motor to 0 amps or off) for every thing other than when stationary I can use the shift modifier for accumulator control by commanding a fast negative pressure ramp only during a shift. When stationary I am using it to soften the shift when going from P/N in to drive or reverse.

Here is the first road test using a modified message 11 frame to get some gearbox items. The blue spike is a bit mask item to indicate the shift request (which is when the solenoids are commanded, which changes with load), green is the force motor current, red is RPM.

Pressure Ramp Profiles 2.png (17.76 KiB) Viewed 5232 times

Bit of tweaking of ramp rates and times and should be good to go mmmmm smooth shifting

[Holden202T]

nice R&D! should mean you should be able to get it doing pretty good all round hopefully!

[VL400]

Yeah was expecting this to require some custom code to handle an accumulator instead of line pressure. Has certainly made it nicer to drive, and can now get the valve body modified so WOT shifting is better.

[VL400]

Getting more tuning KMs in and starting to run very nicely now. Can highly recommend the Spartan wideband, the sequencing is great for a quick sanity check and seems very accurate around stoich - its hard to check other AFRs. The MTX-L and Spartan do read very differently to each other, and its not an analog offset issue. This is a screen cap at stoich and lean cruise with the MTX-L (green) and Spartan (light blue) next to each other with the narrowband (dark blue) on the other bank...

Wideband 2.png (35.47 KiB) Viewed 5088 times

Seems ok, but got to WOT with a 12.8: 1 commanded AFR and there is a big difference...

Wideband 1.png (30.74 KiB) Viewed 5088 times

The richer it goes the larger the difference, its not just WOT either (suspected exhaust back pressure) as it also happens at idle commanding various AFRs using mode 4. This was while setting up injector opening times (Spartan tracks much closer to target now)...

Wideband 3.png (29.16 KiB) Viewed 5088 times

Have since moved the O2 sensors around so the spartan and narrowband are next to each other on the passenger bank, MTX-L on the drivers side. I had a problem with the cheap narrowband sensor last year, was not a huge fan of idling when the car was still in the shed and moving around the yard. I think it was too cold so ended up clogged with carbon and became slow. Didnt clear up with some driving so with nothing to lose, got a butane torch out and got it glowing red for a few minutes. Works mint again with a heap of cross counts Here is a recent log and ADX if anyone is interested, very uneventful though!

11P_1baA.adx

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11P_1B69.XDL

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Put some new plugs in a few weeks back and pulled one today to check for any knock, looks ok but am no plug reading expert.

600_6493.jpg (263.52 KiB) Viewed 5088 times

Shift points are getting there and TCC lockup too. Will be changing to PWM TCC soon, the toyota box supports it but there is only one solenoid unlike the 4L60E with an on/off plus PWM.

Currently running on 11P V105 beta so will post the bin up once that is released (minor changes).