QuestionQUESTION: Hi
Some time ago I got some problems with backfire into intake mainfold. I didn't find location for potential air/vacuum leak.
But today my problem is different :(
I bought new O2 Sensor (not Mopar)and replaced.
Reconnected all as it should be and Dodge throw me codes P0131 and P0132.
and what is my main problem rough Idle even stall - only on N/P positiion.
After apply D/R it is all fine.
Park/Neutral VSS=0
Engine coolant 95C
TPS 12.9%
IAT 64C
Long Term Fuel Trim -32
MAP 58-72
RPM ~500-600
VSS=0 D/R
Engine coolant 95C
TPS 12.9% stable
IAT 64C
ABG Long Term Fuel Trim "0"
MAP fixed 38
RPM fixed ~840
I've made road test and it runs as usual.
I've checked IACV cleaned - nothing changed - but after disconnecting engine stalls
I've disconnected O2 sensor - nothing changed rought idle.
Please help.
ANSWER: Hi Chris,
Let me check out the codes in the shop manual and get right back.
Roland
---------- FOLLOW-UP ----------
QUESTION: I forgot to add that engine is DOHC 2.4
ANSWER: Hi Chris,
The signal wire is black/light green and runs from pin 4 of the sensor plug to pin 31 of the control module #2 plug (gray). The return wire is brown/dark green and runs from pin 3 at the sensor to pin 32 of the #2 plug.
Please read the PS below and respond.
Thanks,
Roland
---------- FOLLOW-UP ----------
QUESTION: Wheat exactly I should measure?
Voltage , Ohm, Engine running?
check continuity
pin 4 of the sensor plug to pin 31
pin 3 at the sensor to pin 32
AnswerRemove both the plugs, then check continuity between the pins. and also check that there is infinite resistance between the two wires, and measure that there is infinite resistance to ground of both wires. Then plug in the powertrain plug and measure the voltage on the pin 4 of the sensor plug to make sure it is not showing 5V or more. Shake the harness gently during each of the measurements to show that there is no intermittency.
I'd appreciate a rating/nomination if you would take a moment.
Thanks,
Roland
