2003 Dodge Neon Logo
Anonymous
Anonymous Posted on Jun 08, 2012
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2004 neon idles rough while in drive. runs fine with A/C on but when I turn it off idle drops way down. What's the problem?

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  • Contributor 14 Answers
  • Posted on Jun 08, 2012
Anonymous
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Joined: Jun 07, 2012
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Is ther a check engine light

  • Anonymous Jan 03, 2013

    No check engine light, or codes thrown.

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5 Related Answers

Facewest

  • 24 Answers
  • Posted on Dec 26, 2008

SOURCE: 2003 DODGE NEON IDLES OK

I have a 2003 Neon SXT. It does not have a distributor cap. Sparkplug wires are to be change at about 45,000 miles as they build up current resistance with use.

As Guru stated change your air filter. It may be so dirty that not enough air is getting in for complete combustion. Hope you can solve your problem.

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Anonymous

  • 583 Answers
  • Posted on Jul 26, 2009

SOURCE: Rough low idle in gear when stopped at a light.

probable vacuum leak query brake booster

Anonymous

  • 123 Answers
  • Posted on Jan 07, 2009

SOURCE: 88 dodge dakota has rough idle and stalls at slow down.

Change/thoroughly clean the idle control solenoid. It may be sticking and causing rough idling.
Cleaning it is unlikely to be more than a short-term solution.

Anonymous

  • 104 Answers
  • Posted on Oct 12, 2008

SOURCE: 2004 stratus 2.7L Erratic idle, sometimes dies, sometimes revs at stops

hey-I have has this before different car but same - idle control valve is failing - computer at shop will pick this up on diagnostic

Jonah Oneal

  • 14092 Answers
  • Posted on Sep 21, 2010

SOURCE: 2004 ram 3500 5.9 cummins has rough idle . I put

YOU COULD HAVE BAD FUEL OR AIR GETTING INTO FUEL SUPPLY SYSTEM.

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Without trouble codes you are fishing in the dark. If the engine has a cylinder that is dead at idle from a fuel injector or ignition problem, it should have a code for a miss on that cylinder. A mechanical problem like a burned valve could cause the problem without setting a code. Have you checked compression on all 4 cylinders ? ?
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There re few possibilities that can cause no idle issues.To troubleshoot the issue help links are provided below.Click the link below:---
Idle Problem? http://whatisbyme.blogspot.in/2012/05/2001toyota-corolla-idle-problem.html
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Steering Wheel Vibrates at Idle? http://whatisbyme.blogspot.in/2012/05/1993-toyota-corolla-steering-wheel.html

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Jul 17, 2012 • Cars & Trucks
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I have an 1994 Acura integra ls n swapped a b18c on it n I have an idling problem, my idle goes up and down..what can be the cause of this
Get the Idle air control valve checked inspected.Also its suggested to get more troubleshooting done.For more troubleshooting,click the help,links below:---Idle Problem? http://whatisbyme.blogspot.in/2012/05/2001toyota-corolla-idle-problem.html
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Jul 17, 2012 • Cars & Trucks
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Idle drops way down in drive gear in park it's fine or running the A/C
what car is this, could be normal or not depending, like my 73 nova dogs down when put in gear but its suppose to with a 3 speed turbo. if its a newer car its not. and would sudject checking transmission fluid/filter or even replace both. if your fuild is low or old the transmission wont slip as easy and will make you car work harder to idel while sitting still.
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2002 Neon - car idle rough with the A/C on. Have changed spark plugs, air filter, etc. and still runs rough. Took it to a shop and there are no fault codes. The problem only happens when the car sits in...
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Sep 26, 2009 • 2002 Dodge Neon
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Shut down
try this.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
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