Sync Loss Errors at 3500 at 3600 rpm

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03-29-2018, 11:44 AM

#21

hustler

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Quote:

Originally Posted by 18psi

borrow known good one and test

I think I'll just go on a lunch ride on the bike instead.

03-29-2018, 11:45 AM

#22

Efini~FC3S

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Quote:

Originally Posted by hustler

how do I check a CKP if it's faulty when it seems to work well at low RPM rather than high?

Replace it with a known good one and see if the problem goes away?

EDIT: Whoops, Vlad beat me to it whilst I was taking my sweet time to respond

03-29-2018, 12:01 PM

#23

DNMakinson

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Seriously, I had similar issues with, I think, the same vintage MS3-Basic. Is it the larger (longer) case version?

I fixed by adjusting the FW filters on the Crank Sensor. I can get you the settings I use when I get home this evening. Changing Sensors did not help. There are no pots to adjust, it uses optical isolation circuit, not VR circuit.

03-29-2018, 12:18 PM

#24

hustler

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Quote:

Originally Posted by DNMakinson

Thanks.

03-29-2018, 04:53 PM

#25

DNMakinson

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03-29-2018, 06:09 PM

#26

hustler

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Well new sensor and tried the filter with similar and more robust filtering, no dice, still have the same crap. Ugh.

03-29-2018, 09:02 PM

#27

DNMakinson

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Wow. That’s all I have. Ian (Codrus) had a friend add some capacitors to his input circuits. I don’t recall the details.

03-30-2018, 03:04 PM

#28

hustler

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Funny, when I switch-off the "check engine light" function, the car works fine. Turn it back on and I lose crank signal. Weird. Car works now.

03-30-2018, 06:13 PM

#29

Braineack

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lol

03-30-2018, 07:50 PM

#30

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Radiator fan works intermittently.

04-02-2018, 02:22 PM

#31

pdexta

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Quote:

Originally Posted by DNMakinson

Stealing your filter settings fixed the issue with my 2000 with Brain Built MS3X. For me this is a new issue that just started showing up a month or so ago. I assume there's a physical issue with the sensor/wiring somewhere that's causing it, but the filter settings seem to have cured it for now. Thanks for sharing!

04-02-2018, 02:35 PM

#32

codrus

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Quote:

Originally Posted by DNMakinson

Wow. That’s all I have. Ian (Codrus) had a friend add some capacitors to his input circuits. I don’t recall the details.

We basically disconnected the MS3 HC11 inputs at the connector to the MSlabs board, built new filters, and then rerouted it to a pair of unused pins on the Mazda connector.

Post 98 in my build thread: https://www.miataturbo.net/build-thr...2/#post1206290

--Ian