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2001 Dodge Neon idles rough in gear

My 2001 Dodge Neon idles rough in drive and reverse but idles fine in park and neutral. I have changed the spark plugs, air filter, spark plug wires, and the coil pack. I just recently had my transmission serviced (flushed and refilled), my throttle body cleaned, my oil changed, my fuel filter and pump replaced, and my fuel injectors cleaned. I have check for error codes but none were found. I have put A LOT of money into solving this problem but none of the above have worked. There is no signs or sounds of a vacuum hose leak. What else could be causing it to idle rough only in drive and reverse?

Oh yeah my idling RPM’s are around 600. Way to low!

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Posted on Jan 02, 2017

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SOURCE: 92 mustang backfiring

try changing your idle controll valve it worked for me

Posted on Feb 09, 2009

  • 295 Answers


I think you have ruled out the engine with all the parts you have replace. The transmission torque convertor is in lock up mode all the time. The engine is having to hard of a time to stay at the normal idle. The over drive clutches and soleniod are most likely damaged in the transmission.
I think you should take the vehicle to a trasnmission shop , The can check the torque convetror soleniods and pressure control soleniod.

The oil light coming on bothers me. I know you have the rebuilt engine in the vehicle but I think the oil pump in the engine is starting to go out or could be weak. The lower bearings connected to the crank shaft might be starting to leak. Have the oil pressure checked .

Posted on Mar 19, 2009

  • 61 Answers

SOURCE: how to replace a PCV valve on my 1997 dodge neon?

Once you have the new PCV valve locate the old one on your engine. It will sit on the middle of one of your valve covers (most likely passenger side) and will have a line that connects to the top of the valve. Simply pull the old one out and put the new one in snapping that line on the new one. Should only take about a minute to do. Hope this helps, let me know if it does.

Posted on May 05, 2009

  • 115 Answers

SOURCE: I have 2002 dodge stratus, replaced timing

sounds like plugged catalytic converter for the exhaust... have it ckd out

Posted on Aug 08, 2009

  • 94 Answers

SOURCE: 1999 Chevrolet Cavalier, surging, stalling

Check the Alternator, Mine was doing something similar to it, was almost dieing constantly, at stops in drive, lights would flicker alot on bumps and up hills when rpm's would increase. Also yea mine also got worse after it warmed up, I replaced the alt. with a reman. but unless it was professionally rebuilt by a local electrical shop (which are kind of rare now a days) I would just get a new one from a local parts house, Also you pay for what you get. Do not have the shop get the part for you because they have anywhere from a 10%-25% mark up on local parts houses which is close or above what you would pay

Posted on Jun 07, 2010

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