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What is the MAF and APS stands for? - 2003 Toyota MR2 Spyder

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Mass air flow sensor

APS I never heard of that one

ABS yes anti lock braking system

Posted on Sep 01, 2010


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What does emission test codes P0171 and P0174 stand for?

Most common cause is a dirty MAF (Mass Air Flow) Sensor..It can be cleaned with a Radio Shack product called DeOxit...Remove MAF, Delicate so be careful, spray with No-Touch DeOxit , replace...

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Hello and welcome to FixYa!

This can lead to many things, most of all is because of a bad sensor. There can be a bad sensor somewhere and I strongly suggest that you have the engine scanned. During the diagnostic it will list the trouble codes and by then you'll know what part is in need of replacement.
Although in my own opinion, it can be a possible MAF (mass air flow) sensor issue. If the MAF is faulty there will be vacuum irregularities.
Hope this helps and thank you for using FixYa! Have a good one!

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2000 model xg30,when started idles at 600-650rpm,once driven and whilst driving,idles at900rpm in drive and 1300rpm in park/neutral.Maf sensor is ok,do you think it could be an air leak or a carbon deposit...

It's either the APS or the TPS (Accelerator Position Sensor or the Throttle Position Sensor)... Inspect/test them. One or both could have bad spots in the potentiometer. Oh... by the way, there is NO 2000 XG... only 2001 thru 2005.

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Need to know what MAF means.

MAF stands for mass air flow sensor, this is used to tell the computer how much air is entering the engine, check the air filter,and clean the sensor with CRC mass air flow cleaner, with engine off. hope this helps,let me know Ray

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if you want to get rid of your MAF sensor, you will need to upgrade your engine management. there are a few piggy-back systems like MAP-ECU . you could also go with a stand-alone system like the AEM EMS

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