Question about 2005 Dodge Neon

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2005 dodge neon problems

I have a 2005 dodge neon and it is idleing really high and does a back firing. have changed O2sensor spark plugs and wires, map sensor and throttle sensor and still is idling really high and back firing what is going on?

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  • Expert
  • 176 Answers

Check for disconnect hose or a vacuum leak

Posted on Apr 22, 2014

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6ya6ya
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Posted on Jan 02, 2017

Lloyd Six
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SOURCE: Idled high, replace IAC and PCV, now idles low and stalls

On modern day cars the parts that get fitted need to be adapted to the ECM using a decent diagnostic machine. I bet that this was not done and the car is now suffering as a result.
Something to try is resetting the ECU, simply disconnect battery for 10 minutes, reconnect, then start car from cold *without touching gas pedal* and leave idling until the rad fan comes on (this resets all the base idle settings) then take it for a drive - hopefully will solve the problem

Posted on Nov 18, 2009

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SOURCE: 1998 dodge ram pickup 318 eng.

If the engine seems to run fine over 1450 RPM maybe there is a vacuum hose leaking or EGR valve is slightly stuck open. Any help from the OBD II trouble codes? Or is there simply no MIL and no stored information in the OBD II computer read at the local parts store through the connector by the drivers knee?

Posted on Dec 04, 2009

  • 3 Answers

SOURCE: Car idles

If it revs up and down you need retrain the car to idle. I know it sounds crazy but you need to ask dealer or local shop the steps to do it.

Posted on Dec 31, 2009

timsauto123
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HAVE YOU REPLACED THE TPS?












TIM

Posted on Dec 22, 2010

nicole99wu
  • 1049 Answers

SOURCE: My 2003 Dodge Neon will idle low on and off and

hi 8,
A car idling problem can cause intermittent stalling and make it difficult for your engine to operate properly. A low idle may cause the IAC valve, or idle air control valve, to overcompensate for an improperly adjusted throttle. Of course, your IAC valve might be the problem itself. Before you can know what you need to fix, you should troubleshoot the problem. Fixing your idle problem can normally be done within an hour. 1. Open the hood of your car and locate the idle air control valve on the backside of the engine on the throttle body assembly.
2. Unplug the electrical connector running to the valve.
3. Unscrew the screws that hold the idle air control valve to the throttle body assembly and pull the valve off the throttle body.
4. Turn the valve over and look at the sensor wires. If there is any dirt or debris in the sensor, then spray the sensor wires liberally with electronic parts cleaner.
5. Set the dial on your voltmeter to "OHMs".
6. Touch the red lead of your voltmeter to one of the terminals on the end of the sensor and the black lead to the other terminal on the other end of the sensor.
7. Check the reading on the voltmeter. The reading should be "0" but a variance of ".05" is acceptable. The numbers represent the continuity in the sensor. The lower the number, the better.
8. Reinstall the valve.
9. Start the engine.
10.Turn the nut on the throttle cable at the throttle body clockwise to tighten the cable and increase the idle to 800 RPM. If the idle fluctuates, you may need to replace the IAC valve. However, your idle should hold steady if the valve's continuity in step 7 was within specifications.
hope helpful,
greetings

Posted on Nov 10, 2011

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