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Codes P0131 and P0171

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Old 01-30-2014, 09:07 AM
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Default Codes P0131 and P0171
Hey guys,

I was going to the post office today to send out some packages, and about 2-3 minutes after starting, the engine would hesitate at part throttle and sort of misfire during idle.

A minute after, the CEL came on.

Runs fine if I give it a full throttle run.

I checked with my ScanGauge, and got a DTC P0131 and a pending P0171 after I cleared the P0131. The P0131 comes back if I switch the ignition off and start again.

I didn't have my laptop to connect to the MS3.

Halp?
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Old 01-30-2014, 09:11 AM
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Looks like they are related to oxygen sensor and maf.
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Old 01-30-2014, 09:21 AM
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Thanks, I'll go for a ride with my laptop and see what TunerStudio has to say. Perhaps its time to change my wideband sensor.
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Old 01-30-2014, 09:27 AM
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Originally Posted by Reverant
Thanks, I'll go for a ride with my laptop and see what TunerStudio has to say. Perhaps its time to change my wideband sensor.
When was the last time you calibrated it?
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Old 01-30-2014, 09:40 AM
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IIRC about 6 months ago with my last oil/filter change.
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Old 01-30-2014, 09:46 AM
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Get a Zeitronix and don't care about that **** anymore...
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Old 01-30-2014, 09:50 AM
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Originally Posted by Reverant
IIRC about 6 months ago with my last oil/filter change.
Probably needs to be re calibrated and get an oil change too.
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Old 01-30-2014, 09:53 AM
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OBD codes still function with megaquirt?? *mind blown*
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Old 01-30-2014, 09:59 AM
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Originally Posted by Preluding
OBD codes still function with megaquirt?? *mind blown*
If its running just Fuel/Spark with MS I'd imagine so. If your Fuel is off or ignition table the Stock ECU is probably gonna pick up some codes. I never ran a MS this way but thats how I picture it.
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Old 01-30-2014, 10:14 AM
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Originally Posted by Preluding
OBD codes still function with megaquirt?? *mind blown*
This was also very interesting to me
Rev has a "special" megasquirt.
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Old 01-30-2014, 10:14 AM
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Originally Posted by ScottyP3821
If its running just Fuel/Spark with MS I'd imagine so. If your Fuel is off or ignition table the Stock ECU is probably gonna pick up some codes. I never ran a MS this way but thats how I picture it.
Piggyback = OBD codes
Standalone = No more OBD codes

Sorry for the thread jack...
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Old 01-30-2014, 10:19 AM
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You realize this is Rev we're talking about right?

Not some n00b. He forgot more about MS than most of us ever knew
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Old 01-30-2014, 10:21 AM
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Yeah, this MS3 supports 60+ codes, CCM monitors and realtime OBD-II data. There's no stock ECU in the car.

K, tks bye.
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Old 01-30-2014, 10:26 AM
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Originally Posted by Reverant
Yeah, this MS3 supports 60+ codes, CCM monitors and realtime OBD-II data. There's no stock ECU in the car.

K, tks bye.
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Old 01-30-2014, 10:28 AM
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Enhanced MS3 baller edition
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Old 01-30-2014, 10:35 AM
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More likely Extreme MS3 or something.
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Old 01-30-2014, 10:36 AM
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Yes we all know, that we want this bloody damn thing now! In all it's glory! Did I mention NOW...
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Old 01-30-2014, 10:41 AM
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shutupandtakemymoney.jpg?
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Old 01-30-2014, 11:59 AM
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Originally Posted by Reverant
shutupandtakemymoney.jpg?
If you ever start selling these. I would pay good money. I might finally buy an OBDII miata.
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Old 01-30-2014, 12:14 PM
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If I start selling these?
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