Question about 2002 Dodge Neon

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My car idles rough when stopped in drive

When i am in drice and stopped the car idles rough and then stops when I take my foot off of the brake and take off. It has a k&n air filter style on it and i think it might have something to do with the air flow sensor. I have cleaned the air flow sensor the air filter and the throttle body and I still have the problem. What do you think is wrong?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: ROUGH IDLE / ENGINE SURGE

Check for vacum leaks on hose going from the intake to the brake booster. Also check the dodge.com website. Click on the for users button. Enter in last eight digits of vin and see if pcm (computer) needs a update, or if there is any other open recalls on the van.

Posted on Jul 21, 2008

emissionwiz
  • 75051 Answers

SOURCE: 2003 dodge ram p/u 1500

I would think the idle speed control valve is defective.

Posted on Sep 17, 2008

hi99ins
  • 123 Answers

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.

Posted on Jan 07, 2009

  • 9 Answers

SOURCE: 1997 dodge dakota v6 engine wont start replaced

turn the key to the on position a see if you can here a buzzing sound around the fuel tank,if you don't hear a sound then. (be very careful while doing this) with the key off take a fuel line coming from the tank loose,make sure its pointed away from you and turn the key to the on position,see if any gas comes out,if not then your fuel pump is probably bad.

Posted on Mar 05, 2009

  • 412 Answers

SOURCE: 1998 ram 1500 5.9 gas rough idle,hissing sound from air filter

SHOWING MISFIRES ON SCAN TOOL?IF NOT,ENGINE CONTROLLER HAS NOT LEARNED MISFIRE MONITOR..WILL HAVE TO BE DRIVEN A BIT FOR RELEARN..IF YOU CAN SEE MISFIRES..MISFIRING ON MORE THAN 1 OR ALL CYLINDERS?CHECK UNDERSIDE OF IGNITION COIL FOR CRACKS..IF NOT CRACKED,YOU MAY HAVE A FAULTY CRANK SENSOR..ANY CORRODED PLUG WIRES AT DISTRIBUTOR CAP?ALSO CHECK IF ANY OIL PRESENT IN INTAKE MANIFOLD..GASKET ON BOTTOM OF INTAKE MAY BE BROKEN CAUSING AN INTERNAL VACUUM LEAK

Posted on Jun 22, 2009

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1 Answer

'96 Mystique 2.0 trouble with idle. replaced idle mixing valve. I don't get any codes, I have to shift to neutral at a stop sign or light to keep from stalling. It gets real rough almost a lope.


troubles at lights may very well mean a vacuum leak from a faulty brake booster
test by stopping and then applying the park brake and taking your foot of the brake pedal
you can do this test in the garage
start the engine , apply the park brake , place in drive
if it idles alright , put you foot on the brake
if it plays up , replace the brake booster

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2010 subaru forester engine cuts out


consider this
when at the stop lights , you will have your foot on the brake as it will still be in drive or in gear and you don't want the car to move
a simple test is to apply the hand brake to stop the car and don't touch the foot brake
if it idles ok but cuts out when you apply the foot brake , replace the brake booster as it has a vacuum leak that is causing the problem
you can do this test in the garage by starting in neutral and allowing the engine to idle , then apply the foot brake
iof it dies it is the booster

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I have a 2006 GMC Envoy, idles rough at a stop when in gear, but levels out smooth when in neutral. Drives smooth on the highway.


check for a vacuum leak in the brake booster. Check this by just allowing the engine to idle with the hand brake on and if ok then put your foot on the brake and if the idle changes then there is an air leak in the booster.

Jul 27, 2014 | Cars & Trucks

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How to recycle cmputer after reseting CEL


1.let car sit overnight. 2. Start engine, put A/C on high, let it idle for 20-25 minutes, 2, then drive car uninterrupted for 60mph for 10 minutes, 3. slow down to 25 mph for 4 minutes, come to a complete stop with foot on brake let it idle for 2 minutes, 4. drive again at 30 mph for 8 minutes, come to a complete stop let it idle with foot on brake for 3 minutes. 4. Drive at 40 mph (turn off overdrive) for 6 minutes. 5. Drive at 20mph for 3 minutes at a time, each time coming to a complete stop with foot on brake for 2 minutes. Do this 4 times. Let the car cool overnight and repeat entire process. Then check status of systems with a code scanner.

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My 2004 ford expedition idles rough like its going to cut off The idling jumps up and down in park or drive only when stopped Service engine light cuts off and on periodically what could be happening


run a teat. Remove the vacuum line from the brake booster and plug off. Start engine and see if it idles normally. . Put your foot on the brake pedal and apply the brakes . If the idle is still normal replace the brake booster as there is an air leak in the diaphram.. The service light is probably recording misfiring and air fuel mixture problems.. run fault codes any way just to check it out .

Dec 23, 2013 | Cars & Trucks

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Idle good when cold, hotter it gets the worst it idles especially when sitting at stop lights


simple test for a vacuum brake booster
star and run the engine at idle without applying the foot brake
if it gets worse when the foot brake is applied , it is a vacuum leak in the booster ( replace the booster )
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1 Answer

I have a 1994 Honda Accord 4 door v6. I have rough idle when in drive and smooth idle when in neutral. Also rough take offs from a stop or slow speeds. If I pump the gas pedal a few time the rough take...


  • does the engine miss? bumps is a rythmic pattern?
  • an engine miss will appear to diminish at higher rpm due to centrifical force.
  • other possible problem broken or flat motor mount.
  • is the idle rough in reverse?
  • if not
  • open hood
  • start engine
  • Left foot on brake (hard)
  • start engine
  • watch engine as you select drive
  • still holding brake with left foot / throttle gas with right foot
  • does engine dramatically move?
  • if so replace motor mount on offending side
  • if not possible engine miss or transmission problems

Jul 10, 2010 | 1994 Honda Accord

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