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Old 11-01-2013, 09:59 PM   #1
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Exclamation Drivability issues

This is for my father's car. He says that it runs poorly, missing badly, but only after it warms up. As far as I know, it has not had any tune-ups, at least not since he has had it. He has had the spark plug wires changed, but nothing else. Could the plugs be the culprit?

Thanks much in advance. He's really worried about this.

BTW, it's a 2004 Taurus with the 3.0L engine.
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Old 11-01-2013, 10:27 PM   #2
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I would head over to AutoZone and have the codes pulled (its free). A full tuneup is needed. How many miles are on it? It's a possibility the cat(s) may be clogged too.

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Old 11-03-2013, 11:53 AM   #3
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My brothers missed I don't remember if it did it all the time or warm.It was the coil pack easy to replace if that's the issue.His had the code for it .
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Old 11-03-2013, 08:57 PM   #4
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I appreciate the responses. The problem is, he says it hasn't shown any codes. Should he take it to get the codes read, anyway?

Thanks again, folks!
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Old 11-04-2013, 05:38 AM   #5
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Yes. The ECU will still store codes if minor codes have been triggered. Major codes will be stored, as well as throwing on the CEL...

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Old 11-04-2013, 01:09 PM   #6
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I appreciate it. Thanks much!!! I will get with him and get it to either an Autozone or Advance Auto store.

As for the plugs, as far as I know for the years that he has had the car, those plugs have never been changed. Don't know the exact mileage, but it's well over 100,000. It was my sister's car. Her husband doesn't believe in tune-ups.
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Old 11-04-2013, 01:33 PM   #7
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If it has over 100,000 on the factory plugs, there's your issue. I would suggest that you use Motorcraft or Autolite plugs exclusively.
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Old 11-04-2013, 09:03 PM   #8
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Read your owners manual, if it calls for double platinum plugs, you MUST use double platinums, don't go cheap with copper plugs or regular platinums...

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Old 11-04-2013, 10:17 PM   #9
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It might use iridium plugs too.
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Old 11-05-2013, 09:30 AM   #10
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I really appreciate all the responses. I have debated the tune-up topic with my brother-in-law, but it got me nowhere. He insists that if the factory says that the plugs don't need changing until 100,000 miles, then it must be so. My answer to that is that most (if not all) spark plugs won't last 100,000 miles. And, try to remove them after that long!
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