Strange signal loss and sync loss 2 after MS3 1.3.2 upgrade

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PUMPISH
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Strange signal loss and sync loss 2 after MS3 1.3.2 upgrade

Post by PUMPISH »

I have very strange issue and it comes when the engine is warm after I was driving.
If I start the engine the RPM drops and the engine want to die but after about 10 seconds it runs as normal again, veru smooth.
But if I turn the key off and start again I get the same issue .
When the engine is cold it starts just perfekt and no signal loss

any ides?
Last edited by PUMPISH on Sun Aug 24, 2014 1:00 pm, edited 2 times in total.
grom_e30
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Re: Strange signal loss issue at the start

Post by grom_e30 »

can you post a msq and a composite log?
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
PUMPISH
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Re: Strange signal loss issue at the start

Post by PUMPISH »

here comes msq and tomorow and can fix composit log, but I checked composit log today and could not se any misses, I all try tomorow again.

Most of all this essue comes after I was driving hard and the engine is real hot.
Actually I have had the same essue in a couple of years already and just not had the energy to bother me because the essue disappear after 10 seconds after the engine has started.
But now the man a little tired of it
PUMPISH
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Re: Strange signal loss issue at the start

Post by PUMPISH »

NEW UPDATE

today the car has the same issue all the time when i start the engine.
Cold and warm engine the same issue, each time I start.

I made a few composit log but and sync loss log and it show nothing.
BUT when I remove the cam sensor connector then it starts perfect without cam sync
So it is something with a cam sync, it takes about 10 seconds to work well, dont understand why

Log shows synd loss reason 17 (second trigger not found when expected ) many times
PUMPISH
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Re: Strange signal loss issue at the start

Post by PUMPISH »

now I installed new cam sensor but stil the same issue
grom_e30
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Re: Strange signal loss issue at the start

Post by grom_e30 »

composite log?
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
PUMPISH
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Re: Strange signal loss issue at the start

Post by PUMPISH »

I coult not upload it because it got bigger then 1 mb :(
I the signal on composit log looks look and shows no sync loss.
I can try to log again shorter one
grom_e30
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Re: Strange signal loss issue at the start

Post by grom_e30 »

you can zip them to save space.
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
PUMPISH
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Re: Strange signal loss issue at the start

Post by PUMPISH »

new update, new issue!

I updated firmware to MS3 1.3.2 and now the cam sync issue is gone! Engine starts perfect every time!

But I have a new issue instead.

When I boost at the 3th gear and coming at higher rpm everything just dies!
Engine just dies and tunerstudio dies too.

When I check log everyting drops when I get sync loss 2 , misssing tooth at the wrong time.

It happens only when i boost at 3th gear with no spinning
PUMPISH
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Re: Strange signal loss and sync loss 2 after MS3 1.3.2 upg

Post by PUMPISH »

I have browsed through my old logs and discovered something.
I had not lost sync until I switched to the newer firmware for the first time. After that I got lost sync reason 2 in each log.
Before I switched to the newer code so the car has worked flawlessly for 2-3 years daily
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