Maf

batty1214 · 01-13-2009, 03:45 PM

so on my way to work this morning, my sisters 1998 s10 threw a po172 code. which is a #1 bank too rich. everything that I am finding online is saying to check the MAF... but what am I looking for? I aint dealt with this new stuff, so Im stumped. I know where it is, but thats where it ends

bradrhale · 01-13-2009, 03:52 PM

what size engine is this?? a MAF malfunction will have an effect on both banks. if this model has o2 sensors for each pipe off the exhaust manifold, that is where i would start.

batty1214 · 01-13-2009, 04:37 PM

o2 sensor wil throw a too rich code?

bradrhale · 01-13-2009, 06:46 PM

if it is not reading like it is supposed to than yes. those are going to adjust your fuel mixture slightly to compensate. this is why when you have a faulty 02 sensor, you tend to lose mpg.

mudseeker · 01-14-2009, 08:13 AM

batty1214 · 01-16-2009, 11:53 PM

well,two days light was on, and now its off.... I did nothing..... and the code isnt showing anymore

bradrhale · 01-17-2009, 02:53 PM

truck just burped, thats all.

batty1214 · 01-17-2009, 05:29 PM

I was thinking from the other end, but hey.... better out than In!!!

01-14-2009, 08:13 AM	#5
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,317	Attached Thumbnails __________________ i'd rather be hunting

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01-13-2009, 03:45 PM	#1
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,131	Maf so on my way to work this morning, my sisters 1998 s10 threw a po172 code. which is a #1 bank too rich. everything that I am finding online is saying to check the MAF... but what am I looking for? I aint dealt with this new stuff, so Im stumped. I know where it is, but thats where it ends

01-13-2009, 03:52 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 7,831	what size engine is this?? a MAF malfunction will have an effect on both banks. if this model has o2 sensors for each pipe off the exhaust manifold, that is where i would start.

01-13-2009, 04:37 PM	#3
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,131	o2 sensor wil throw a too rich code?

01-13-2009, 06:46 PM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 7,831	if it is not reading like it is supposed to than yes. those are going to adjust your fuel mixture slightly to compensate. this is why when you have a faulty 02 sensor, you tend to lose mpg.

01-16-2009, 11:53 PM	#6
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,131	well,two days light was on, and now its off.... I did nothing..... and the code isnt showing anymore

01-17-2009, 02:53 PM	#7
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 7,831	truck just burped, thats all.

01-17-2009, 05:29 PM	#8
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,131	I was thinking from the other end, but hey.... better out than In!!!