Pat me on the back, and call me a monkey's uncle. Cause the converter has fixed 95% of running issues. I also noticed no change in exhaust note with magnaflow converter.
Long term fuel trims are front bank 0%
rear bank 0%
I still have a slight rear bank Short term negative trims. Like -5% to -10%. So she's still dumping fuel.But bank 2/1 O2 snsor heater is failing, and 2/2 is running slightly over 1 volt sometimes.
In responce to Boostworks
2% tolerance resistors soldered in. Spliced into jumper harness.
Regular 4 wire o2's.
No adjustment to o2 map. And I think I have it set to percent mode so it passes signal through unmolested. Still new to AEm so I think that percenteged mode is corect right now untill I actually want to tune the closed loop portion of o2 map.
Still my running issue and problem was there before AEM install Just after turbo and Cylinder head install. I reused all engine sensors and beside misssing converter the only other thing I did was replumb Evap and all vacum lines over to hydraulic hose and AN fitting's for all conections.
See the truck has to be able to sit thier and Idle correctly. I'm not going to drive it untill I can get it to to do that. But know that seems to be fixed.
A little reading material.
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2000 Jeep Truck Cherokee 4WD L6-4.0L VIN S
Vehicle Level Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Oxygen Sensor Description and Operation Description and Operation
OXYGEN SENSOR - PCM INPUT
The Oxygen Sensors (O2S) are attached to, and protrude into the vehicle exhaust system. Depending on the emission package, the vehicle may contain either 2 or 4 sensors. On non-California emissions packages, 2 sensors are used: upstream (referred to as 1/1) and downstream (referred to as 1/2). On California emissions packages, 4 sensors are used: 2 upstream (referred to as 1/1 and 2/1) and 2 downstream (referred to as 1/2 and 2/2).
An O2 sensor is a galvanic battery that provides the PCM with a voltage signal
(0 - 1 volt) inversely proportional to the amount of oxygen in the exhaust. In other words, if the oxygen content is low, the voltage output is high; if the oxygen content is high the output voltage is low. The PCM uses this information to adjust injector pulse-width to achieve the 14.7-to-1 air/fuel ratio necessary for proper engine operation and to control emissions.
An O2 sensor must have a source of oxygen from outside of the exhaust stream for comparison. Current O2 sensors receive their fresh oxygen (outside air) supply through the wire harness. This is why it is important to never solder an O2 sensor connector, or pack the connector with grease.
Four wires (circuits) are used on each O2 sensor: a
12 volt feed circuit for the sensor heating element, a ground circuit for the heater element, a low-noise sensor return circuit to the PCM, and an input circuit from the sensor back to the PCM to detect sensor operation.
Oxygen Sensor Heaters/Heater Relays
On a certain non-California emission package, the heaters on both sensors are fed battery voltage from the ASD relay which is controlled by the PCM. Refer to ASD relay for more information. On another non-California emission package, the heaters on both sensors are fed battery voltage from the two O2S heater relays. The O2S relays are also controlled by the PCM. On the California emission package, the heaters on all 4 sensors are fed battery voltage from the two O2S Heater Relays.
The O2 sensor uses a Positive Thermal Co-efficient
(PTC) heater element. As temperature increases, resistance increases. At ambient temperatures around
70 °F , the resistance of the heating element is approximately
6 ohms . As the sensor's temperature increases, resistance in the heater element increases. This allows the heater to maintain the optimum operating temperature of approximately
930 - 1100 °F (500 - 600 °C) . Although the sensors operate the same, there are physical differences, due to the environment that they operate in, that keep them from being interchangeable.
Maintaining correct sensor temperature at all times allows the system to enter into closed loop operation sooner. Also, it allows the system to remain in closed loop operation during periods of extended idle.
In Closed Loop operation, the PCM monitors certain O2 sensor input(s) along with other inputs, and adjusts the injector pulse width accordingly. During Open Loop operation, the PCM ignores the O2 sensor input. The PCM adjusts injector pulse width based on preprogrammed (fixed) values and inputs from other sensors.
Upstream Sensor (Non-California Emissions)
The upstream O2S sensor (1/1 sensor) is located in the exhaust downpipe before the catalytic convertor. It provides an input voltage to the PCM. The input tells the PCM the oxygen content of the exhaust gas. The PCM uses this information to fine tune fuel delivery to maintain the correct oxygen content at the downstream oxygen sensor. The PCM will change the air/fuel ratio until the upstream sensor inputs a voltage that the PCM has determined will make the downstream sensor output (oxygen content) correct.
The upstream oxygen sensor also provides an input to determine catalyst efficiency.
Downstream Sensor (Non-California Emissions)
The downstream heated oxygen sensor (1/2 sensor) is located near the outlet end of the catalytic convertor.The downstream sensor is also used to determine the correct air fuel ratio. As the oxygen content changes at the downstream the PCM calculates how much air fuel ratio change is required. The PCM then looks at the upstream oxygen sensor voltage and changes fuel delivery until the upstream sensor voltage changes enough to correct the downstream sensor voltage (oxygen content).
The downstream oxygen sensor also provides an input to determine catalyst efficiency.
Upstream Sensors (California Emissions)
Two upstream sensors are used (1/1 and 2/1). The 1/1 sensor is the first sensor to receive exhaust gases from the #1 cylinder. Both of the upstream O2S sensors are located in the exhaust manifold just before the mini-catalytic convertors. They provide an input voltage to the PCM. The input tells the PCM the oxygen content of the exhaust gas. The PCM uses this information to fine tune fuel delivery to maintain the correct oxygen content at the downstream oxygen sensors. The PCM will change the air/fuel ratio until the upstream sensors input a voltage that the PCM has determined will make the downstream sensors output (oxygen content) correct.
The upstream oxygen sensors also provide an input to determine mini-catalyst efficiency.
Downstream Sensors (California Emissions)
Two downstream sensors are used (1/2 and 2/2). The downstream sensors are located in the exhaust down-pipes just after the mini-catalytic convertors. The downstream is also used to determine the correct air fuel ratio. As the oxygen content changes at the downstream the PCM calculates how much air fuel ratio change is required. The PCM then looks at the upstream oxygen sensor voltage and changes fuel delivery until the upstream sensor voltage changes enough to correct the downstream sensor voltage (oxygen content).
The downstream oxygen sensors also provide an input to determine mini-catalyst efficiency.
Double read this and tell me I'm wrong.:banghead::banghead:
The downstream is also used to determine the correct air fuel ratio. As the oxygen content changes at the downstream the PCM calculates how much air fuel ratio change is required. The PCM then looks at the upstream oxygen sensor voltage and changes fuel delivery until the upstream sensor voltage changes enough to correct the downstream sensor voltage (oxygen content).
MAP sensor there is ur problem lol
