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2008 Dodge Avenger Running Very Poorly

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 2008 Dodge Avenger Running Very Poorly

This topic contains 2 replies, has 2 voices, and was last updated by Nightflyr * Richard Kirshy 4 months, 2 weeks ago.

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  • #961287
    Woody Woodward
    Woody Woodward
    Participant

    I have an 08 Avenger with the 2.4L. It has about 135K miles. It starts up and idles just fine. However, attempting to drive down the highway is almost impossible. The car lacks power during acceleration. Once I’m up to 50+ mph, it will start to buck/jerk really bad and lose all power. The RPMs will start dropping, even though the gas pedal is on the floor, and eventually it will catch and start accelerating again. It will repeat this process over and over. It’s like it doesn’t recognize that I’m pressing the gas pedal.

    I’ve replaced the coil packs, spark plugs and air filter. I also fixed the leaky valve cover.

    Here are the codes it currently has:
    P0172 – System too rich
    P0171 – Fuel System Lean
    P2004 – Intake manifold runner control stuck open
    P2017 – Intake manifold runner position sensor/switch circuit high
    P0135 – 02 heater circuit (sensor 1)
    P0141 – 02 heater circuit (sensor 2)
    P0032 – H02S heater control circuit high (sensor 1)
    P0038 – H02S heater control circuit high (sensor 2)
    P0128 – thermostat rationality test
    P0700 – transmission control system (MIL Request)

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  • #961580
    Woody Woodward
    Woody Woodward
    Participant

    I removed the throttle body and cleaned it with throttle body cleaner and it made a HUGE difference. The car runs really good now.

    Now I’m showing two codes. Looks like I may need to replace the O2 sensors. Kind of strange how both sensors would be malfunctioning. Anyone have instructions on how to test the O2 sensors?

    P0031 – H02S heater control circuit low (sensor 1)
    P0038 – H02S heater control circuit high (sensor 2)

    #961608
    Nightflyr *
    Richard Kirshy
    Participant
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