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Old 01-30-2014, 10:07 AM   #1
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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, 10:11 AM   #2
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Looks like they are related to oxygen sensor and maf.
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Old 01-30-2014, 10:21 AM   #3
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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, 10:27 AM   #4
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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.
When was the last time you calibrated it?
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Old 01-30-2014, 10:40 AM   #5
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IIRC about 6 months ago with my last oil/filter change.
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Old 01-30-2014, 10:46 AM   #6
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Get a Zeitronix and don't care about that **** anymore...
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Old 01-30-2014, 10:50 AM   #7
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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, 10:53 AM   #8
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OBD codes still function with megaquirt?? *mind blown*
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Old 01-30-2014, 10:59 AM   #9
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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, 11:14 AM   #10
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Quote:
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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, 11:14 AM   #11
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Originally Posted by ScottyP3821 View Post
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, 11:19 AM   #12
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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, 11:21 AM   #13
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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, 11:26 AM   #14
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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, 11:28 AM   #15
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Enhanced MS3 baller edition
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Old 01-30-2014, 11:35 AM   #16
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More likely Extreme MS3 or something.
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Old 01-30-2014, 11:36 AM   #17
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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, 11:41 AM   #18
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shutupandtakemymoney.jpg?
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Old 01-30-2014, 12:59 PM   #19
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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, 01:14 PM   #20
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If I start selling these?
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