lean condition @ wot
11-14-2011, 06:20 AM
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lean condition @ wot Have a auto meter wideband on a 2004 Zo6. Recently put a can in and ever since my air fuel ratio shows 16.7 @ wot. The car doesn't seem to be running that lean so I
Thinking its a false reading. What could cause this? Bad o2 sensor?
Thinking its a false reading. What could cause this? Bad o2 sensor?
11-14-2011, 10:38 AM
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Installed right at the x-pipe...the problem is that I never had a problem before the cam. Speed Inc. Installed and tuned it. Should I go through the wiring with a fine tooth comb just to make sure they didn't **** with anything?
11-14-2011, 05:46 PM
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Get a manual fuel pressure gauge and see what you are running at idle. Unless you want to wire one in, just make sure the idle readings are the same when comparing the manual to the electric. If your fuel pressure is below ~58psi at idle, you may either need a bigger pump or bigger injectors, or you've got a wiring/FPR issue.
If the Fuel pressure is within 58-60psi, you may need to have the tuner re-work it. A number of parameters can effect this.
If the Fuel pressure is within 58-60psi, you may need to have the tuner re-work it. A number of parameters can effect this.
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11-14-2011, 06:09 PM
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Sounds like a false reading... I would check it over and if nothing glaring shows up, replace the sensor... or, better yet, can you get your hands on another wideband to verify with.
11-14-2011, 07:08 PM
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what does the signal of the wideband look like in closed loop going down the road? It should be a sign wave around 14.7. Use the narrow bands to check the wide band.
