[YoTRacer158]

Based on some major performance issues and a couple CEL codes, I have a feeling my MAF sensor took a dump over the weekend. I was wondering if anyone knew where I could find some testing procedures for the maf or even just a schematic so I can figure out for sure before I start throwing parts at it.

It's a Turbo maf out of a 94 I believe. Thanks in advance.

 

[Nick 95 6sp]

Surprise! It's in the FSM, in this section: http://www.97supraturbo.com/1997 Service Manual/Diagnostics-Engine.pdf

 

[YoTRacer158]

Thanks, I figured it would be...not exactly a regular on this forum as I don't have a supra, the MAF is swapped into my supercharged Tacoma. Lately I've been having a lot of high RPM pinging/knocking, could that be a symptom of a MAF on its way out? Not reading air volume correctly and running lean as a result?

I've been noticing the high RPM pinging for about a month or so and my power hasn't felt as good as normal, then the other night it threw a CEL for the knock sensor and there was absolutely no power once I went into boost. I was already thinking it might be a MAF issue, Then 2 more CEL's came up:

P0113 intake air temp sensor 1 circuit high input
P0101 mass or volume air flow circuit range/performance

I'm hoping its Just the MAF and not anything more severe.