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99 Corolla Misfiring P0303
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shawn99corolla
Novice
Sep 6, 2014, 4:05 PM
Post #1 of 2
(1643 views)
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99 Corolla Misfiring P0303
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Issue with 99 Corolla CE with 147,000 miles....I have a misfiring P0303 Code - Cylinder #3 Misfire. Here is what has been done in effort to remedy the misfire. A major tune up, new spark plugs, new fuel injectors, new spark plug wiring, The car runs fine once warmed up but in the morning the engine vibrates until warm and also shivers a little while the car is stopped at a stop light. I have dropped it off at the mechanics a couple of times now to no avail. Once the code is reset it will not display the CEL for couple of days but the symptoms still remains. The CEL comes back on within 2-3 days with same code. Really frustrating! Well at least this time CEL in not flashing like before it comes on and stays on. Any ideas what can still be causing the misfire. I really appreciate your help. Thank you in advance.
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 6, 2014, 4:45 PM
Post #2 of 2
(1628 views)
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Re: 99 Corolla Misfiring P0303
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Please don't duplicate questions. Once is enough.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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