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Thread: Why am I running rich?
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06-30-2008, 10:29 AM #1
Why am I running rich?
Below is a list of my mods when i hook up a handheld for my "SES" light it says i am running rich.........WHY?
2000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.
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06-30-2008, 10:35 AM #2
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Red Tint Jewelcoat- 2008 Trailblazer SS
@ handheld.
Get a wideband on it if you are that worried about it.
Anytime you allow air to come in and get out faster and at higher volumes, the stock tune will start to go rich.
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06-30-2008, 04:34 PM #3
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06-30-2008, 04:57 PM #4
would your MAF throw anything off.. alot of ppl say that it is worthless and dont need it.. its good for milage.. i looked at the mods... u might throw off ur air/fuel ratio... idk
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06-30-2008, 04:58 PM #5
also have u ever had o2 sensor problems.. every bird does its a matter of time
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06-30-2008, 06:24 PM #6
already had my o2 censors replaced
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06-30-2008, 07:00 PM #7
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Red Tint Jewelcoat- 2008 Trailblazer SS
More air coming out of the motor faster will register more air at the O2's...and the computer will make up for it with more fuel.
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07-21-2008, 08:30 AM #8
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07-21-2008, 08:53 AM #9
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Red Tint Jewelcoat- 2008 Trailblazer SS
MAP sensor and MAF sensor will both read more air coming in...and assume it needs a bit more fuel.
This is why MOST of the bolt-ons cause our cars to go rich.
The factory is already a bit fat.
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07-21-2008, 09:18 AM #10
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07-21-2008, 09:21 AM #11
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Red Tint Jewelcoat- 2008 Trailblazer SS
Rich won't hurt anything. Other than a little bit of power.
You need to get a wideband on it to see how bad it really is.
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07-21-2008, 12:08 PM #12
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07-21-2008, 12:28 PM #13
Sending your PCM in to get tuned???? Hmmmmmmm, there something about tuning a car without the car is what worries me.
2010 Camaro
2006 GTO, LS2, 1 of 475
2009 Chevy Silverado
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07-21-2008, 12:30 PM #14
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07-21-2008, 12:32 PM #15
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07-21-2008, 12:34 PM #16
Just scan and tell us what the DTC is, as I mentioned last week.
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07-21-2008, 12:57 PM #17
^^^will do i am going to go to kragen right after work and then i will post up the codes.
Last edited by clg82; 07-21-2008 at 01:15 PM.
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07-21-2008, 02:50 PM #18
I don't know what kragen is, but if you picked up the code with the handheld before, why not use it again?
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07-21-2008, 04:30 PM #19
Ok here is officially the codes: P0155- o2 heater circuit, bank2 sensor 1 and the second code is P0401- exhaust gas recirculation flow insufficient detected what exactly do these mean?
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07-21-2008, 04:45 PM #20
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Red Tint Jewelcoat- 2008 Trailblazer SS
It appears the O2 is creating the rich condition.
What O2's did you replace? Which ones did you put in?
The passenger side O2 appears to be having a problem.
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