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Sigma49508
New User
Mar 19, 2011, 2:44 PM
Post #1 of 7
(1573 views)
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I have a code that comes up, the engine light comes on, stays on for awhile then goes out, I get P0300 which is multiple Mis-fires, where should I start in my troubleshooting / Repair process?.
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 19, 2011, 3:03 PM
Post #2 of 7
(1571 views)
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How about starting with year, make, model and engine size?
What have you tried already and what has been changed in the ignition system and when?
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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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Sigma49508
New User
Mar 19, 2011, 4:56 PM
Post #3 of 7
(1565 views)
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Sorry I forgot that! 2005 Ford Taurus, 3.0L U.
I had the plugs and wires changed in 2010 and just general maintenance, oil changes, tire rotations, etc.
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 19, 2011, 5:00 PM
Post #4 of 7
(1561 views)
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You're going to have to investigate some to find out what's going on. Plugs and wires are usually the first suspects but there are loads of things that can cause that. If you have a scan tool, you should be able to retrieve the actual misfire counts for every cylinder to help you pinpoint where it's coming from.
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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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Sigma49508
New User
Mar 20, 2011, 8:27 AM
Post #5 of 7
(1553 views)
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I will start with the plugs and wires, my scanner came up with P0300 so there are several things that could cause this, thanks for the help.
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 20, 2011, 9:04 AM
Post #6 of 7
(1549 views)
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There are dozens of things that can result in misfire.
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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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Sigma49508
New User
Mar 20, 2011, 11:27 AM
Post #7 of 7
(1543 views)
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Guessm it is time to take the old girl to have a engine diagnostic done, that will show waht is wrong. Again thanks for your advice.
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Please Help - Knock sound & engine fail
