BMW M52 fires up, but dies after a few seconds :(

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Snake____1
MS/Extra Newbie
Posts: 17
Joined: Thu Sep 10, 2015 2:14 pm
Location: West\South Norway

BMW M52 fires up, but dies after a few seconds :(

Post by Snake____1 »

Hello,

Having some trouble with my daily driver after upgrading from MS2 to MS3. I've attached my datalog, at 2847 rpm it suddenly decides to die out without timing error.
AFR value is locked at 10.1 because warmup cycle on the Innovative is initiated, after that the afr reads 12-13.

Does anybody have any tips?
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M52Bxx.msq
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2018-02-11_13.06.33.msl
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jsmcortina
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Location: Birmingham, UK
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Re: BMW M52 fires up, but dies after a few seconds :(

Post by jsmcortina »

Post up and compare a log of a startup from MS2. How do the pulsewidths compare?

You injector deadtime settings look odd. You have the basic deadtime (100%) at 9.2V which is rather unusual.
So the deadtime being used at your running voltage of 11V is about 0.4ms.

Do you have an alternator? It doesn't seem to be working.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

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