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Lean codes bank 1 and 2. 2003 Sienna
3 years 11 months ago #40304
by Flykol6
Replied by Flykol6 on topic Lean codes bank 1 and 2. 2003 Sienna
Waycraze. The propane was entered between the maf and the throttle body. For some reason Stft are positive today. When the propane. Finally hit the o2. The stft went down. The graph looks funny. To me.
I think I posted something from yesturday. if you wonder were that previous post is from. I have not mastered this web forem yet
I think I posted something from yesturday. if you wonder were that previous post is from. I have not mastered this web forem yet
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3 years 11 months ago #40306
by Flykol6
Replied by Flykol6 on topic Lean codes bank 1 and 2. 2003 Sienna
Waycraze
I sent a message to the scanner app developer. He said sensor 1 and 5 are the O2.
I figured out how to order the data. this chart is the O2 volts Banks 1 and 2 with the Propane added.
I got fancy in MS paint and added comments
Is it Odd the voltage variation high low swings was higher after the propane was added?
Oxygen sensor 1 Wide Range Voltage
Oxygen sensor 5 Wide Range Voltage
I sent a message to the scanner app developer. He said sensor 1 and 5 are the O2.
I figured out how to order the data. this chart is the O2 volts Banks 1 and 2 with the Propane added.
I got fancy in MS paint and added comments
Is it Odd the voltage variation high low swings was higher after the propane was added?
Oxygen sensor 1 Wide Range Voltage
Oxygen sensor 5 Wide Range Voltage
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3 years 11 months ago - 3 years 11 months ago #40314
by Paul P.
Never stop Learning.
Replied by Paul P. on topic Lean codes bank 1 and 2. 2003 Sienna
Your getting there, add the STFT's and the LTFT, and MAP and BARO.
At a quick glance, this data set is not indicative of a vacuum leak, but MAF readings seem on the low side actually.
According to this Bank 1 is dropping out when it should be going RICH like Bank 2. This would suggest a bank-specific fueling issue.
If possible try and be consistent in collecting data, eg if it's just FT's required at idle then up to high rpm, a simple brake torque will do. When you want to check a fuel pump delivery on a WOT run, low gear, in a safe area, full throttle.
Thanks
Paul
At a quick glance, this data set is not indicative of a vacuum leak, but MAF readings seem on the low side actually.
According to this Bank 1 is dropping out when it should be going RICH like Bank 2. This would suggest a bank-specific fueling issue.
If possible try and be consistent in collecting data, eg if it's just FT's required at idle then up to high rpm, a simple brake torque will do. When you want to check a fuel pump delivery on a WOT run, low gear, in a safe area, full throttle.
Thanks
Paul
Never stop Learning.
Last edit: 3 years 11 months ago by Paul P.. Reason: added photo
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3 years 11 months ago #40321
by Flykol6
Replied by Flykol6 on topic Lean codes bank 1 and 2. 2003 Sienna
Update: Read about using soapy water in a spray bottle. Found a leak. Can you believe it ? It’s a vacuum actuator under the throttle cable cam. Not sure what it does. Increase idle or something. Stuck a stick in the hose to plug it off. The long term trim chart changed Alot. Now it Is saw tooth looking
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3 years 11 months ago #40324
by Flykol6
Replied by Flykol6 on topic Lean codes bank 1 and 2. 2003 Sienna
Everything feels about the same. It always starts and idles well. A little hesitation on acceleration. Now and then. When the Cel goes off I think it runs worse. Might be just in my brain. Today’s Long trims look Lower .
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3 years 11 months ago #40331
by Flykol6
Replied by Flykol6 on topic Lean codes bank 1 and 2. 2003 Sienna
With Leak sealed up. We went to store. 9 miles going 50 mph.
Today everything was going good. Then 5 minutes in the drive. CEl for P0174. The LTFt bank 2 went to 50%. Crazy
the data available is based on what I list in the dashboard screen I create.
I shows PIDs for what I choose in dashboard. There may be Pid's I may be able capture more PIDs by adding items to the dashboard.
Bara and some of the things you ask to see are not in this data file
I have the O2 Volts . LT ST RPM MAP throttle pos
John, I will run the data at Idle and at 3000 after I post this .
Thanks for the Help !
Today everything was going good. Then 5 minutes in the drive. CEl for P0174. The LTFt bank 2 went to 50%. Crazy
the data available is based on what I list in the dashboard screen I create.
I shows PIDs for what I choose in dashboard. There may be Pid's I may be able capture more PIDs by adding items to the dashboard.
Bara and some of the things you ask to see are not in this data file
I have the O2 Volts . LT ST RPM MAP throttle pos
John, I will run the data at Idle and at 3000 after I post this .
Thanks for the Help !
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