Air fuel gauge

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zeke
First Gear
Posts: 128
Joined: Sun Jan 22, 2012 8:16 am
Location: Yakima WA

Air fuel gauge

Post by zeke »

I have a narrow band gauge in my car when I went to work today my car was stumbling and it stalled at a stop sign. When I restarted it I had to hold the throttle to the floor before it would restart and noticed that the gauge was showing it was rich and would was not moving off of the rich light is this a sign that my o2 sensor has failed?
91 ss Ej22t dohc td04 sti Slanty haltech elite 1500
bcmaxx
First Gear
Posts: 218
Joined: Wed Oct 24, 2012 6:30 pm

Re: Air fuel gauge

Post by bcmaxx »

zeke wrote:I have a narrow band gauge in my car when I went to work today my car was stumbling and it stalled at a stop sign. When I restarted it I had to hold the throttle to the floor before it would restart and noticed that the gauge was showing it was rich and would was not moving off of the rich light is this a sign that my o2 sensor has failed?
could be a few things! Id suspect maf or oxygen sensor, and possibly coolant temp sensor
TurnNburn
Second Gear
Posts: 353
Joined: Fri Jul 09, 2010 1:41 am
Location: Bend, Oregon

Re: Air fuel gauge

Post by TurnNburn »

^^^^What he said

try unplugging the O2 sensor. the ECU will default the signal into a rich mode, somewhere around 15:1 . If it changes substantially then you are probably on the right track.
1990 NA 2.2 Open Light rally car
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