slussermanner
New member
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, PCV valve replaced, and my fuel injectors cleaned. I have check for error codes but none were found. I did a cylinder pressure test on each cylinder to check for a cracked head or gasket, all pressures where in the normal range and the same for all four cylinders. There is no signs or sounds of a vacuum hose leak. I have put A LOT of money into solving this problem but none of the above have worked. What else could be causing it to idle rough only in drive and reverse? Oh yeah my idling RPMs are around 600. Way to low!