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Downstream O2 sensors work?
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jfls45
User
Dec 3, 2011, 8:36 PM
Post #1 of 33
(13706 views)
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Downstream O2 sensors work?
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2002 Dodge Dakota, 3.9L V6, 109K Miles
Downstream O2 Sensor questions
I ran a OBD Scan program from my netbook today and observed the following:
Can someone who knows how O2 sensors work explain which downstream sensor is working correctly, see the attached photo.
This photo shows the O2 sensors after the vehicle has been warmed up to normal operating temp. The downstream are the two on the bottom.
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 3, 2011, 8:56 PM
Post #2 of 33
(13694 views)
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Re: Downstream O2 sensors work?
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Are you getting a P0430 code because Bank 2 catalyst isn't cleaning the exhaust. What rpm was the engine at?
Bank 1 appears that it is doing something and the cat on that side is working. Bank 2 sensor is working because it is fluctuating. You can tell if Bank 1 is responsive by stabbing the gas pedal a few times to richen up the exhaust and see if the O2 responds.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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jfls45
User
Dec 3, 2011, 9:07 PM
Post #3 of 33
(13677 views)
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Re: Downstream O2 sensors work?
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I am getting no codes at all.
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jfls45
User
Dec 3, 2011, 9:12 PM
Post #4 of 33
(13670 views)
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Re: Downstream O2 sensors work?
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So are you leaning toward the downstream sensor bank 2 sensor 2 (bottom right graph) indicating the mini-catalyc converter is bad? Would this cause stutter or poor performance when running in overdrive and a load on the motor?
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 3, 2011, 9:24 PM
Post #5 of 33
(13662 views)
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Re: Downstream O2 sensors work?
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Bank 2 catalyst isn't cleaning because the rear sensor pattern is mimicking the front O2 sensor. The Bank 1 side appears to be working.
Were you driving the vehicle at the time the stuttering was occurring when this snap shot was taken?
You want to resolve your drive-ability problem first before condemning the cat. A cat this isn't cleaning won't necessarily cause a drive-ability problem unless it is plugging up the exhaust.
Does your program have the option of viewing misfire data?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 3, 2011, 9:24 PM)
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jfls45
User
Dec 3, 2011, 9:47 PM
Post #6 of 33
(13653 views)
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Re: Downstream O2 sensors work?
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it checks to see if the misfire check circuit ran which it does, but i get no codes indicating a misfire.
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 3, 2011, 9:57 PM
Post #7 of 33
(13646 views)
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Re: Downstream O2 sensors work?
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There might not be enough misfires occurring to cause the light to come on. The misfire monitor is active, but you might not be able to view current misfire pids with your program.
If the engine feels like it is skipping under load. That is usually caused by ignition secondary issues such as spark plug wires breaking down. How are the plugs, wires, cap, and rotor?
Misfires due to an ignition problem will reek havok with the catalyst because the unburnt fuel from the misfiring will cause the catalyst to overheat if there are enough of them.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 3, 2011, 10:02 PM)
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jfls45
User
Dec 3, 2011, 10:00 PM
Post #8 of 33
(13642 views)
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Re: Downstream O2 sensors work?
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plugs wires cap and rotor and coil all brand new motor has 109K on it. did compression check all about 180PSI
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Discretesignals
Ultimate Carjunky
/ Moderator
Dec 3, 2011, 10:13 PM
Post #9 of 33
(13639 views)
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Re: Downstream O2 sensors work?
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What are your long and short term fuel trims for both banks at the time of the stutter and loss of power? Can you snap shot a data list and post it up on here when the problem is occurring?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 3, 2011, 10:14 PM)
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Sidom
Veteran
/ Moderator
Dec 4, 2011, 12:00 AM
Post #10 of 33
(13630 views)
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Re: Downstream O2 sensors work?
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DS is right....There just isn't enough info here to even guess at it...
Under all the right conditions it would look like one cat is bad.....But if you haven't run it long enough to fire off both cats then it could just be a case of one of them being to cold...
You should also check to see if all the moniters have run and passed. If you have any incomplete ones then other ones won't run until they run & pass...
If you have an incomplete O2 moniter then you may have a cat code looming to set as soon as the O2 moniter runs & passes....
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 6:38 AM
Post #11 of 33
(13614 views)
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Re: Downstream O2 sensors work?
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Are we sure this truck even has 4 sensors. Everything I'm seeing says it only has one downstream sensor unless it's California. The poster is in PA.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Dec 4, 2011, 6:44 AM)
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jfls45
User
Dec 4, 2011, 6:54 AM
Post #12 of 33
(13607 views)
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Re: Downstream O2 sensors work?
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I'm curious to why you say everything says there isn't 4 sensors, did you look at the photo in original post. you can clearly see 4 sensors.
it's a 02 Dakota 3.9L V6, has the two mini-cats, an upstream and downstream on each mini-cat, these two pipes come together and go into the main cat. then to the muffler... the photo I provided clearly shows 4 sensors if you look at the title window above each sensor. now we got that cleared up, yes i ran the vehicle for long time, its is my daily driver, i run it back and forth to work everyday, 16 miles to work one way, so it is getting heated up. but not thrown one code.
I appreciate all of your help and will hook laptop back up soon and log about 20 minutes worth of driving to post up here to look at.
thanks
(This post was edited by jfls45 on Dec 4, 2011, 6:56 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 7:05 AM
Post #13 of 33
(13601 views)
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Re: Downstream O2 sensors work?
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No, what i see is a window that shows 4 graphs that are labeled as 4 different sensors which doesn't mean much of anything. Unless this is a California emissions certified vehicle, it only has one downstream sensor.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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jfls45
User
Dec 4, 2011, 8:16 AM
Post #14 of 33
(13595 views)
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Re: Downstream O2 sensors work?
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Four (4) Sensors.
This is Bank 1 Sensor 2: 
This is Bank 2 Sensor 1 and 2:
And yes there is a transmission in it now... these pictures were taken when the tranny was being rebuilt.
(This post was edited by jfls45 on Dec 4, 2011, 8:25 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 8:45 AM
Post #15 of 33
(13585 views)
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Re: Downstream O2 sensors work?
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You have California emissions.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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jfls45
User
Dec 4, 2011, 8:52 AM
Post #16 of 33
(13578 views)
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Re: Downstream O2 sensors work?
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ok, so I live in PA, the Carfax report says it was originally sold as a corporate vehicle right here in PA. Do you know why it has Calif emissions? and could I redo the exhaust without the mini-cats and have just two sensors? What would I have to do besides the wiring harness, change the computer too or could it be done with dealer programming tool?
What are your suggestions?
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 8:57 AM
Post #17 of 33
(13574 views)
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Re: Downstream O2 sensors work?
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No, you can't change it. It is what it is. It was built with a package to be California compliant and that's the way it will always be.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 9:02 AM
Post #18 of 33
(13571 views)
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Re: Downstream O2 sensors work?
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I don't frequent new car dealers but MA and CA have had same specs for many years and says so on window stickers. Can't say for sure but I suspect many auto makers just comply to highest standard for many destinations.
MA + CA have done this for ages,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 9:11 AM
Post #19 of 33
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Re: Downstream O2 sensors work?
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There are only 2 emissions standards. They are "Federal Compliant" and "California and Federal compliant". There are no cars specifically built for Massachusetts or any other state besides California.
I'm not sure what the whole goal of this thread is. The downstream sensors are Cat monitors only and serve no other purpose. They have no input or control over computer decisions for mixture or anything else. If you are not getting a Cat efficiency code, then none of this really matters at all in terms of engine performance.
You can have a blocked or restricted cat than can effect performance but the readings on B2S2 don't reflect that.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 9:25 AM
Post #20 of 33
(13559 views)
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Re: Downstream O2 sensors work?
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It's not a different requirement just that it must meet CA standards to be sold here new anyway. I don't think it applies to used vehicles like CA where alterations are or were once required.
Nothing near me but I'll try to find a window sticker on a new car and take a pic.............
Just looked at a '97 of my own. Says underhood meets EPA standards for California and I know that was sold new to upstate, NY??!!
Dunno - that's how things are marked here not a MA sticker but must meet CA standards?
I'll see if I can Google out that confusion............
Tom
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Sidom
Veteran
/ Moderator
Dec 4, 2011, 10:58 AM
Post #21 of 33
(13547 views)
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Re: Downstream O2 sensors work?
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Well 16 miles should do it but if your gonna run it to get a datastream, I would make sure at least half of it is at freeway speeds.
Before you take off, check and make sure all the moniters have run or passed.....If the O2 moniter is incomplete, the cat moniter won't run....
We appreciate the pictures to see what you got but......damn dude you didn't have to pull out the tranny for us....
I actually have an 02 Dakota but it's got the small V/8 so we can't get a good baseline from that........
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jfls45
User
Dec 4, 2011, 12:43 PM
Post #22 of 33
(13534 views)
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Re: Downstream O2 sensors work?
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I tried to copy and paste data stream from excel file but it jumbled all together. is there a way to attach an excel file to this?
(This post was edited by jfls45 on Dec 4, 2011, 12:46 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 4, 2011, 12:49 PM
Post #23 of 33
(13524 views)
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Re: Downstream O2 sensors work?
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It doesn't apply the line returns when you do that but you can go back in and edit them in. I was trying to do that for you when you deleted the content.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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jfls45
User
Dec 4, 2011, 1:22 PM
Post #24 of 33
(13519 views)
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Re: Downstream O2 sensors work?
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19:31.7 Malfunction Indicator Lamp (MIL) Status 0
19:32.0 Misfire Monitoring Support 1
19:32.2 Fuel System Monitoring Support 1
19:32.3 Comprehensive Component Monitoring Support 1
19:32.5 Misfire Monitoring Completed 1
19:32.6 Fuel System Monitoring Completed 1
19:32.8 Comprehensive Component Monitoring Completed 1
19:32.9 Catalyst Monitoring Support 1
19:33.1 Oxygen Sensor Monitoring Support 1
19:33.2 Oxygen Sensor Heater Monitoring Support 1
19:33.3 Oxygen Sensor Monitoring Completed 1
19:33.5 Oxygen Sensor Heater Monitoring Completed 1
19:33.6 Calculated Engine Load 4.313725 %
19:33.7 Engine Coolant Temperature 161.6 F
19:34.3 Intake Manifold Absolute Pressure 5.221359 psi
19:34.4 Engine RPM 689 rpm
19:34.5 Vehicle Speed Sensor 0 mph
19:34.6 Ignition Timing Advance for #1 Cylinder 14
19:34.7 Intake Air Temperature 131 F
19:34.9 Throttle Position 11.37255 %
19:35.0 Oxygen Sensor Present (Bank 1 Sensor 1) 1
19:35.1 Oxygen Sensor Present (Bank 1 Sensor 2) 1
19:35.2 Oxygen Sensor Present (Bank 2 Sensor 1) 1
19:35.3 Oxygen Sensor Present (Bank 2 Sensor 2) 1
19:35.4 Oxygen Sensor Voltage (Bank 1 Sensor 1) 0.76 V
19:35.5 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 1) -3.125 %
19:35.6 Oxygen Sensor Voltage (Bank 1 Sensor 2) 0.16 V
19:35.7 Oxygen Sensor Voltage (Bank 2 Sensor 1) 0.8 V
19:35.8 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 1) -3.90625 %
19:35.9 Oxygen Sensor Voltage (Bank 2 Sensor 2) 0.82 V
(This post was edited by jfls45 on Dec 4, 2011, 1:35 PM)
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jfls45
User
Dec 4, 2011, 1:25 PM
Post #25 of 33
(13512 views)
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Re: Downstream O2 sensors work?
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this data is idling with the pvc hose unplugged, creating a vacuum leak.
32:03.1 Malfunction Indicator Lamp (MIL) Status 0
32:03.2 Number of Emission-Related DTCs 0
32:03.3 Misfire Monitoring Support 1
32:03.4 Fuel System Monitoring Support 1
32:03.5 Comprehensive Component Monitoring Support 1
32:03.6 Misfire Monitoring Completed 1
32:03.7 Fuel System Monitoring Completed 1
32:03.8 Comprehensive Component Monitoring Completed 1
32:03.9 Catalyst Monitoring Support 1
32:04.0 Heated Catalyst Monitoring Support 0
32:04.1 Evaporative System Monitoring Support 1
32:04.2 Secondary Air System Monitoring Support 0
32:04.3 A/C System Refrigerant Monitoring Support 0
32:04.4 Oxygen Sensor Monitoring Support 1
32:04.5 Oxygen Sensor Heater Monitoring Support 1
32:04.6 EGR System Monitoring Support 0
32:04.7 Catalyst Monitoring Completed 1
32:04.8 Heated Catalyst Monitoring Completed 1
32:04.9 Evaporative System Monitoring Completed 1
32:05.1 Secondary Air System Monitoring Completed 1
32:05.1 A/C System Refrigerant Monitoring Completed 1
32:05.2 Oxygen Sensor Monitoring Completed 1
32:05.3 Oxygen Sensor Heater Monitoring Completed 1
32:05.4 EGR System Monitoring Completed 1
32:05.5 Calculated Engine Load 5.882352941 %
32:05.6 Engine Coolant Temperature 199.4 F
32:06.1 Intake Manifold Absolute Pressure 4.496169878 psi
32:06.3 Engine RPM 991.5 rpm
32:06.3 Vehicle Speed Sensor 0 mph
32:06.4 Ignition Timing Advance for #1 Cylinder 10.5
32:06.5 Intake Air Temperature 158 F
32:06.6 Throttle Position 11.37254902 %
32:06.7 Oxygen Sensor Present (Bank 1 Sensor 1) 1
32:06.8 Oxygen Sensor Present (Bank 1 Sensor 2) 1
32:06.9 Oxygen Sensor Present (Bank 2 Sensor 1) 1
32:07.0 Oxygen Sensor Present (Bank 2 Sensor 2) 1
32:07.1 Oxygen Sensor Voltage (Bank 1 Sensor 1) 0.28 V
32:07.2 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 1) 2.34375 %
32:07.3 Oxygen Sensor Voltage (Bank 1 Sensor 2) 0.76 V
32:07.4 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 2) 0 %
32:07.5 Oxygen Sensor Voltage (Bank 2 Sensor 1) 0.84 V
32:07.6 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 1) -2.34375 %
32:07.7 Oxygen Sensor Voltage (Bank 2 Sensor 2) 0.82 V
32:07.8 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 2) 0 %
32:07.9 Malfunction Indicator Lamp (MIL) Status 0
32:08.0 Number of Emission-Related DTCs 0
32:08.1 Misfire Monitoring Support 1
32:08.2 Fuel System Monitoring Support 1
32:08.3 Comprehensive Component Monitoring Support 1
32:08.4 Misfire Monitoring Completed 1
32:08.5 Fuel System Monitoring Completed 1
32:08.6 Comprehensive Component Monitoring Completed 1
32:08.7 Catalyst Monitoring Support 1
32:08.9 Heated Catalyst Monitoring Support 0
32:09.0 Evaporative System Monitoring Support 1
32:09.1 Secondary Air System Monitoring Support 0
32:09.2 A/C System Refrigerant Monitoring Support 0
32:09.3 Oxygen Sensor Monitoring Support 1
32:09.4 Oxygen Sensor Heater Monitoring Support 1
32:09.5 EGR System Monitoring Support 0
32:09.6 Catalyst Monitoring Completed 1
32:09.7 Heated Catalyst Monitoring Completed 1
32:09.8 Evaporative System Monitoring Completed 1
32:09.9 Secondary Air System Monitoring Completed 1
32:10.0 A/C System Refrigerant Monitoring Completed 1
32:10.2 Oxygen Sensor Monitoring Completed 1
32:10.2 Oxygen Sensor Heater Monitoring Completed 1
32:10.3 EGR System Monitoring Completed 1
32:10.4 Calculated Engine Load 5.882352941 %
32:10.5 Engine Coolant Temperature 199.4 F
32:11.0 Intake Manifold Absolute Pressure 4.35113214 psi
32:11.1 Engine RPM 984.75 rpm
32:11.2 Vehicle Speed Sensor 0 mph
32:11.3 Ignition Timing Advance for #1 Cylinder 8
32:11.4 Intake Air Temperature 159.8 F
32:11.6 Throttle Position 11.37254902 %
32:11.6 Oxygen Sensor Present (Bank 1 Sensor 1) 1
32:11.7 Oxygen Sensor Present (Bank 1 Sensor 2) 1
32:11.9 Oxygen Sensor Present (Bank 2 Sensor 1) 1
32:11.9 Oxygen Sensor Present (Bank 2 Sensor 2) 1
32:12.0 Oxygen Sensor Voltage (Bank 1 Sensor 1) 0.6 V
32:12.1 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 1) -0.78125 %
32:12.2 Oxygen Sensor Voltage (Bank 1 Sensor 2) 0.76 V
32:12.3 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 2) 0 %
32:12.4 Oxygen Sensor Voltage (Bank 2 Sensor 1) 0.08 V
32:12.6 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 1) 4.6875 %
32:12.6 Oxygen Sensor Voltage (Bank 2 Sensor 2) 0.12 V
32:12.7 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 2) 0 %
32:12.8 Malfunction Indicator Lamp (MIL) Status 0
32:12.9 Number of Emission-Related DTCs 0
32:13.0 Misfire Monitoring Support 1
32:13.2 Fuel System Monitoring Support 1
32:13.3 Comprehensive Component Monitoring Support 1
32:13.4 Misfire Monitoring Completed 1
32:13.5 Fuel System Monitoring Completed 1
32:13.6 Comprehensive Component Monitoring Completed 1
32:13.7 Catalyst Monitoring Support 1
32:13.8 Heated Catalyst Monitoring Support 0
32:13.9 Evaporative System Monitoring Support 1
32:14.0 Secondary Air System Monitoring Support 0
32:14.1 A/C System Refrigerant Monitoring Support 0
32:14.2 Oxygen Sensor Monitoring Support 1
32:14.3 Oxygen Sensor Heater Monitoring Support 1
32:14.4 EGR System Monitoring Support 0
32:14.5 Catalyst Monitoring Completed 1
32:14.6 Heated Catalyst Monitoring Completed 1
32:14.7 Evaporative System Monitoring Completed 1
32:14.8 Secondary Air System Monitoring Completed 1
32:14.9 A/C System Refrigerant Monitoring Completed 1
32:15.1 Oxygen Sensor Monitoring Completed 1
32:15.2 Oxygen Sensor Heater Monitoring Completed 1
32:15.3 EGR System Monitoring Completed 1
32:15.3 Calculated Engine Load 5.882352941 %
32:15.4 Engine Coolant Temperature 199.4 F
32:16.0 Intake Manifold Absolute Pressure 4.35113214 psi
32:16.1 Engine RPM 986.75 rpm
32:16.2 Vehicle Speed Sensor 0 mph
32:16.3 Ignition Timing Advance for #1 Cylinder 8.5
32:16.4 Intake Air Temperature 159.8 F
32:16.5 Throttle Position 11.37254902 %
32:16.5 Oxygen Sensor Present (Bank 1 Sensor 1) 1
32:16.7 Oxygen Sensor Present (Bank 1 Sensor 2) 1
32:16.8 Oxygen Sensor Present (Bank 2 Sensor 1) 1
32:16.8 Oxygen Sensor Present (Bank 2 Sensor 2) 1
32:17.0 Oxygen Sensor Voltage (Bank 1 Sensor 1) 0.06 V
32:17.1 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 1) 4.6875 %
32:17.2 Oxygen Sensor Voltage (Bank 1 Sensor 2) 0.76 V
32:17.3 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 2) 0 %
32:17.3 Oxygen Sensor Voltage (Bank 2 Sensor 1) 0.8 V
32:17.4 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 1) -3.125 %
32:17.5 Oxygen Sensor Voltage (Bank 2 Sensor 2) 0.74 V
32:17.6 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 2) 0 %
32:17.7 Malfunction Indicator Lamp (MIL) Status 0
32:17.8 Number of Emission-Related DTCs 0
32:18.0 Misfire Monitoring Support 1
32:18.0 Fuel System Monitoring Support 1
32:18.2 Comprehensive Component Monitoring Support 1
32:18.3 Misfire Monitoring Completed 1
32:18.4 Fuel System Monitoring Completed 1
32:18.5 Comprehensive Component Monitoring Completed 1
32:18.6 Catalyst Monitoring Support 1
32:18.7 Heated Catalyst Monitoring Support 0
32:18.8 Evaporative System Monitoring Support 1
32:18.9 Secondary Air System Monitoring Support 0
32:19.0 A/C System Refrigerant Monitoring Support 0
32:19.1 Oxygen Sensor Monitoring Support 1
32:19.2 Oxygen Sensor Heater Monitoring Support 1
32:19.4 EGR System Monitoring Support 0
32:19.5 Catalyst Monitoring Completed 1
32:19.6 Heated Catalyst Monitoring Completed 1
32:19.7 Evaporative System Monitoring Completed 1
32:19.8 Secondary Air System Monitoring Completed 1
32:19.9 A/C System Refrigerant Monitoring Completed 1
32:20.0 Oxygen Sensor Monitoring Completed 1
32:20.1 Oxygen Sensor Heater Monitoring Completed 1
32:20.2 EGR System Monitoring Completed 1
32:20.3 Calculated Engine Load 5.882352941 %
32:20.4 Engine Coolant Temperature 199.4 F
32:20.9 Intake Manifold Absolute Pressure 4.35113214 psi
32:21.0 Engine RPM 978.5 rpm
32:21.1 Vehicle Speed Sensor 0 mph
32:21.2 Ignition Timing Advance for #1 Cylinder 7
32:21.3 Intake Air Temperature 159.8 F
32:21.4 Throttle Position 11.37254902 %
32:21.5 Oxygen Sensor Present (Bank 1 Sensor 1) 1
32:21.6 Oxygen Sensor Present (Bank 1 Sensor 2) 1
32:21.8 Oxygen Sensor Present (Bank 2 Sensor 1) 1
32:21.9 Oxygen Sensor Present (Bank 2 Sensor 2) 1
32:22.0 Oxygen Sensor Voltage (Bank 1 Sensor 1) 0.8 V
32:22.1 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 1) -3.125 %
32:22.2 Oxygen Sensor Voltage (Bank 1 Sensor 2) 0.76 V
32:22.3 O2 Sensor Short Term Fuel Trim (Bank 1 Sensor 2) 0 %
32:22.4 Oxygen Sensor Voltage (Bank 2 Sensor 1) 0.84 V
32:22.5 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 1) -2.34375 %
32:22.6 Oxygen Sensor Voltage (Bank 2 Sensor 2) 0.78 V
32:22.7 O2 Sensor Short Term Fuel Trim (Bank 2 Sensor 2) 0 %
(This post was edited by jfls45 on Dec 4, 2011, 1:40 PM)
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1989 toyota pickup 3.0 crank no start
Please Help - Knock sound & engine fail
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