Am i running too lean?
Aug 28, 2009, 10:47 PM
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Am i running too lean?
My car is running a tbe with o2 housing and an AEM intake untuned with a zeitronix wideband just installed.
The AFR reading is around 20 to 21 when cruising in gear or at idle.
Is this normal for an untuned car with an intake or is there something else wrong?
The AFR reading is around 20 to 21 when cruising in gear or at idle.
Is this normal for an untuned car with an intake or is there something else wrong?
Aug 29, 2009, 06:33 AM
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From what i understand thats running a little lean. Mine reads 14.6 at idle and cruze if i get on it the AFR drops down to 11-12 when the car is in gear and slowing down then i will read high numbers all the way off the gauge.
What does your car read when your under wide open throttle thats whats important.
What does your car read when your under wide open throttle thats whats important.
Aug 29, 2009, 08:12 AM
#3
Abnormal, and I would think that there is something wrong with your WB. It might need to be calibrated again because the car will just not run at the lean a level. It will buck and pop, then throw codes for things like: system lean, misfire, O2 stuck lean, etc.
Aug 29, 2009, 08:55 AM
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Make sure you dont have any exhaust leaks up stream of the wide band. That is WAY to lean, as its already been said, to lean to run. I had a problem with my car, I had a big exhaust leak up stream from the sensor and it was throwing off my readings big time. I fixed the leak and everything was back in spec.
Are you sure you are cruising, or are you under decel when you are seeing 20 and 21? cruise and idle should be 15.3 to 14.1, optimum being 14.7........ just drive at a constant speed with constant throttle and take a look.....
Zeitronix WB do not have a calibration like the innovate, and I have had very good luck with them in the past, its what I run on my car. Its possible the sensor is bad, has it been dropped or anything, does the electrical connector have any damage on it? As I understand it, the calibration resister is on the connector, and if that is damaged it could have poor readings.
Are you sure you are cruising, or are you under decel when you are seeing 20 and 21? cruise and idle should be 15.3 to 14.1, optimum being 14.7........ just drive at a constant speed with constant throttle and take a look.....
Zeitronix WB do not have a calibration like the innovate, and I have had very good luck with them in the past, its what I run on my car. Its possible the sensor is bad, has it been dropped or anything, does the electrical connector have any damage on it? As I understand it, the calibration resister is on the connector, and if that is damaged it could have poor readings.
Aug 29, 2009, 12:19 PM
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Make sure you dont have any exhaust leaks up stream of the wide band. That is WAY to lean, as its already been said, to lean to run. I had a problem with my car, I had a big exhaust leak up stream from the sensor and it was throwing off my readings big time. I fixed the leak and everything was back in spec.
Are you sure you are cruising, or are you under decel when you are seeing 20 and 21? cruise and idle should be 15.3 to 14.1, optimum being 14.7........ just drive at a constant speed with constant throttle and take a look.....
Zeitronix WB do not have a calibration like the innovate, and I have had very good luck with them in the past, its what I run on my car. Its possible the sensor is bad, has it been dropped or anything, does the electrical connector have any damage on it? As I understand it, the calibration resister is on the connector, and if that is damaged it could have poor readings.
Are you sure you are cruising, or are you under decel when you are seeing 20 and 21? cruise and idle should be 15.3 to 14.1, optimum being 14.7........ just drive at a constant speed with constant throttle and take a look.....
Zeitronix WB do not have a calibration like the innovate, and I have had very good luck with them in the past, its what I run on my car. Its possible the sensor is bad, has it been dropped or anything, does the electrical connector have any damage on it? As I understand it, the calibration resister is on the connector, and if that is damaged it could have poor readings.
I guess when i meant cruising, i most likely meant decel and its around 20 to 21. At idle, usually its 20 to 21 also, but it will sometimes be around 18 to 19.
I'll do more tests to check all the readings.
The sensor is brand new, but i'll check the connector since it's used. I checked if had a exhaust leak yesterday and i changed out the gaskets so that shouldn't be the cause.
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Aug 29, 2009, 06:06 PM
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I guess when i meant cruising, i most likely meant decel and its around 20 to 21. At idle, usually its 20 to 21 also, but it will sometimes be around 18 to 19.
I'll do more tests to check all the readings.
The sensor is brand new, but i'll check the connector since it's used. I checked if had a exhaust leak yesterday and i changed out the gaskets so that shouldn't be the cause.
I'll do more tests to check all the readings.
The sensor is brand new, but i'll check the connector since it's used. I checked if had a exhaust leak yesterday and i changed out the gaskets so that shouldn't be the cause.
Aug 30, 2009, 01:00 PM
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Idle stays around 19 to 21.
Could a boost leak be caused because of my intake?
Aug 30, 2009, 04:03 PM
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The idle could be caused from a boost leak, but generally you will not run lean at WOT due to a boost leak...
A boost leak will cause a lean idle and a rich WOT
because at Idle more air is being sucked into the system through the leak that is not accounted for, and at WOT air is being forced out that is already accounted for.... idle you are in vacuum, extra air is being sucked into the system, WOT you are in boost, so air is being pushed out of the system.
Sep 9, 2009, 09:58 PM
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well i just realized my bov popped off
the idle is now at a consistent 15
the reading at wot is only about 11 though, i heard it should be around the 9ish area untuned
the idle is now at a consistent 15
the reading at wot is only about 11 though, i heard it should be around the 9ish area untuned
