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1979-2004 V6 Mustang Tech Discussions

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Unread 04-23-2011   #1 (permalink)
Low2000Mustang is offline Rookie


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Question 2000 V6 Misfire in cylinder 1

Hey Guys,

I have a 2000 3.8 that is throwing a P0301 code. I have replaced the spark plugs and wires but it is still throwing the P0301 code. From my understanding, I have a few options. 1) replace the coil pack. 2) replace/clean the #1 fuel injector and 3) replace the computer chip (which I have no idea what its name is.) From anyones experience, do I keep going until it goes away or what is the most likely cause of this misfire. Any suggestions would be greatly appreciated. Thanks so much.
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Unread 04-23-2011   #2 (permalink)
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Default

You have two more options. Check the cam position sensor, and synchronizer. Synchronizer gears wear out, and a little play will throw a 301 code because #1 is the first cylinder in the firing sequence......
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Unread 04-24-2011   #3 (permalink)
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Default V6 coil pack wiring diagram

Great advice about the cam sensor.

Might consider testing instead of "parts changing"?

Use a "noid" style tester to confirm that the injector is firing. Use the same tester to confim that a firing pulse is good at the coil pack.

DB/LG is cylinder 5,1
RD/LB is cylinder 3,4
PK/WH is cylinder 2,6

If no firing pluse, it's a waste of $$ to replace the coil pack.

Check out the attached diagram.
Attached Files
File Type: pdf diagram-21-4.pdf (12.0 KB, 205 views)
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2000 mustang v6 automatic, 3.8 mustang, misfire



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