What can it be

2000 PLYMOUTH NEON
180,000 MILES • 4 CYL • FWD • MANUAL
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LECOW6
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2000 Plymouth Neon, 4 cylinder, 180,000 miles. I have replaced Cam Sensor, Crank Sensor, Injectors, Spark wires, Coil, SparkPlugs, Front Axles and still after driving for 20 minutes the car starts to buck and jump as if missing. It throws an engine light of P1391. I am replacing the speed sensor tomorrow. No mechanic can tell me what is the problem. Engines idles and setting still at any RPM is smooth but under drive and after 20 minutes from cold start the problem begins. What can this be???
Jan 20, 2011 at 3:31 AM
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FIXITMR
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what about an ignition module? you can get them tested at auto store.
Jan 20, 2011 at 5:12 AM
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LECOW6
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where is the ignition module located
Jan 20, 2011 at 1:45 PM
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FIXITMR
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i guess the 1.6 uses the DIS ignition system. no module. the code indicates intermittent signal loss to PCM from cam/crk sensors. when bucking if you put in clutch and rev does it run fine?
Jan 21, 2011 at 3:05 AM