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Old 09-26-2016, 02:43 AM   #1
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Default Brain MS3 no Fuel pump

Hey,

MS3 from Brain on a 05 miata, the fuel pump does not start, where should I look ?

I checked continuity on harness and it is ok, I check the FP circuit and it looks fine (continuity checked too), I noticed that D8 and R16 are missing.

Thanks
Elior

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Old 09-27-2016, 06:40 AM   #2
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Is this on a MSM?
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Old 09-27-2016, 06:46 AM   #3
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Check if R40 is installed.
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Old 09-27-2016, 08:16 AM   #4
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Not an MSM - it is a 2004 NB sport,

As I understand it R16 from the fuel pump circuit is needed and missing - I installed it - will test tomorrow.

In the pic you can see the missing R16 and that R40 is there.
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Old 09-27-2016, 08:22 AM   #5
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Yes, that's required. Sigh...


sorry about that one.
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Old 09-29-2016, 03:01 AM   #6
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It works fine now.

The reading from the AEM WB was ok just a little of on TS/MS, since the first time I tried to calibrate it, it does not read anything anymore ... the AEM output wire does read normal (changing) numbers...

Please advise.

Thanks
Elior.
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Old 09-29-2016, 06:59 AM   #7
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hmmm. Nothing about the calibration should make it stop inputting. Is it possible the connection got severed when you fixed the unit? Or changed the wbo2 to a different input in software by mistake? What happens if you try re-calibrating for AEM UEGO again?
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Old 09-29-2016, 07:01 AM   #8
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I tried a few pre-cal WB that are there, with no success, it was running good just a bit off, I tried to change the cal nums and the moment I pressed "write" it stooped responding and is showing full rich.

I will check the WB input settings again.


I think I got it, I disabled EGO control and I disabled the "EGO Sensor type", that would disable the WB input reading ?
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Old 09-29-2016, 07:08 AM   #9
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yeah, even with EGO disabled, you need to make sure the sensor type is correct.
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