2001 Ford Explorer Sport Misfire

2001 FORD EXPLORER
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LANGECIVTA
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  • 2 POSTS
hi i have a 2001 ford explorer sport i have two problems i think first my truck is giving me two trouble codes p0300 random misfire,and p0304 cylinder 4 misfire, so i replaced spark plugs and wires still having problems it idles like it is still misfiring and also when i first start my truck it idles real rough and dies.
Feb 4, 2006 at 2:40 AM
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LOVESCARS
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  • 359 POSTS
have egr checked
Feb 4, 2006 at 11:02 AM
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LANGECIVTA
  • MEMBER
  • 2 POSTS
what should i look for on the egr valve i took it off and it doesnt really look that dirty the truck only has 60k miles on it. is there anything else that could cause this?
Feb 5, 2006 at 2:46 AM
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LOVESCARS
  • ✓Experienced Mechanic
  • 359 POSTS
have the coils checked or the check the ignition wires.
i have a ranger that ran rough like that as if misfiring and ran rich turned out to be the egr valve.
i overlooked the fact you had the trouble codes
Feb 6, 2006 at 11:20 AM
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Suggested Repair

Check the EGR valve for proper operation, not just visible dirt, and inspect the ignition coils and ignition wires. Persistent P0300 and P0304 misfires with rough idle and stalling after plug and wire replacement can be caused by a faulty EGR valve or ignition components.

Conversation Summary

The owner of a 2001 Ford Explorer Sport reported P0300 random misfire and P0304 cylinder 4 misfire codes. Spark plugs and wires were replaced, but the engine still misfired, idled roughly, and died after starting. The expert advised checking the EGR valve, then also checking the ignition coils and wires, and noted a similar rough-running case on a Ranger was caused by a faulty EGR valve.

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