1999 Plymouth Neon Check Engine Light

1999 PLYMOUTH NEON
136,000 MILES • 4 CYL • FWD • AUTOMATIC
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JENNANNETEDDER
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The check engine light has been on and off for a couple months now. I have taken it to two mechanics now. Both of them found a code 340, checked the cam and all was good there. The second mechanic found two more codes--123 and 320. He checked what he could and said, again, that the mechanical parts were working.
Is this a computer problem or electrical....or worse yet, both? I appreciate your help.
Mar 26, 2009 at 6:24 PM
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