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1997 Tacoma failed Smog test, maybe MAF sensor, maybe replace Catalytic Converter?

Discussion in '1st Gen. Tacomas (1995-2004)' started by taelien, Mar 14, 2017.

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Mar 14, 2017 at 9:27 AM

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taelien [OP] New Member

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Mar 14, 2017

Member:

#213266

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Male

Vehicle:

2WD 2.4L MFI DOHC 4cyl Toyota Tacoma 1997

Hi!

First Post!

I have a 2WD 2.4L MFI DOHC 4cyl Toyota Tacoma 1997.

So I failed my smog test 'NO(PPM) - Max 552/Measured 604' at 15MPH, I know older Tacomas have a problem with dirty MAF sensors. Checked today and it looks pretty clean. Usually cleaning resolved CEL issues.

Wondering if the problem could be the Catalytic Converter.
Maybe it could be the O2 Sensor as well?

Before I do anything though, I want to just drive the truck for a while on the highway and try the emissions test one more time.

Anyone have any experience with this?

Would truly appreciate some thoughts.

Thanks.

taelien, Mar 14, 2017

#1

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