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2001-2005 Explorer Sport Trac All questions related to the 2001-2005 Explorer Sport Trac model.

2003 Sport Trac sputtering/rough idle.

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Old 05-05-2009, 11:24 AM   #1
Bish
Georgia
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2003 Sport Trac sputtering/rough idle.

First post, and I have a question. I have a 2003 Sport trac that has been rough idling and/or sputtering when stopped or first started in the AM. The check engine light came on the other night. Advantage Auto read the codes (O2 sensor) and recommended using a gasoline treatment. Not surprised that didn't work. Any suggestions?
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Old 05-05-2009, 12:43 PM   #2
Sams01XplrSprt
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welcome bish




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Old 05-05-2009, 01:23 PM   #3
fixxxer
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There are many components in the O Sensor system, could you post the actual codes that were read?




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Old 05-05-2009, 10:03 PM   #4
BrooklynBay
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Welcome to this forum! I've moved your thread to the 2001-2005 Sport Trac section.
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Old 05-06-2009, 01:23 AM   #5
mikekristine218
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Try changing the O2 Sensors. It could also be the Cold Start Sensor if it only occurs when cold.

Hope that helps, all I can think of at this time.
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Old 05-07-2009, 03:17 AM   #6
02Xploda
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Tune up?
IAC--clean it out--free
Throttle body-- clean it out also--free
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Old 05-07-2009, 12:42 PM   #7
471Magnum
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Really need to post the codes. Could be anything from bad EGR valve, or O2 sensor, or a vacuum leak. Or it could very well be dirty injectors.

Codes will point you in the right general direction.
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Old 05-07-2009, 04:34 PM   #8
Clusterpup
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I bought a code reader from Advance Auto a couple of weeks ago for $50, it was on sale, regular price is $70. It just reads the codes and can erase them. It comes with a CD that lists all the codes for MANY vehicles including ours.
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Old 05-08-2009, 08:28 AM   #9
JohnnyO
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Clean the Idle Air Control valve.
Check the vacuum elbow on the passenger side of the engine for a crack.
Both are common problems that will cause a rough idle.




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Old 05-12-2009, 01:31 PM   #10
Bish
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thanks for the advice. I replaced the infamous cracked elbow hose(which was torn not cracked), replaced the fuel filter, erased the code and all is well. the idle is perfect and the light has stayed off.
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Old 05-12-2009, 05:25 PM   #11
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good to hear. my trac had the same hose busted when i bought it. replacing it made it idle better but i still have a vac leak i have to resolve and its affecting the blend door for my ac. i need all the ac i can get living in south florida, its already hot there. i will be checking that out soon as i get back in town.
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Old 05-13-2009, 11:27 AM   #12
sickwilly
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My idle is kind of rough too. I have the fuel filter at home with the tool and if it ever stops raining, I will get it replaced.

I have found the elbo and looking at the top of it, I see some marks but no clear tear or hole. Where were you all finding the tears? I am guessing I should pull that sucker off to be able to see all sides of it?
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Old 05-13-2009, 03:00 PM   #13
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You should be able to hear the leak. Maybe you can stick your finger under the hose and see if you can feel air or maybe your finger will cover the hole and the hissing sound of a leak will stop. Also, that hose comes off pretty easy though if its old it may come apart.
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Old 05-18-2009, 07:42 AM   #14
Bish
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elbow hose leak

I could hear the leak when I lifted the hood. I just pressed on the hose while it was running and it was easy to see the tears on top of the hose.
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Old 10-18-2009, 08:21 PM   #15
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Infamous hose leak before:





and after:

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Old 01-17-2010, 08:41 PM   #16
noelb2615
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thank you very much, very informative
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Old 02-04-2010, 04:15 PM   #17
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Wow, thanks a lot, I've had the exact same issue with my 2002 and just went and looked and my hose looks exactly like that picture!


Where do you get the replacement elbow hose from?

And does anyone know a part number or exact name?

Thanks a ton!
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Old 02-04-2010, 05:44 PM   #18
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Check WWW.DormanProducts.Com for the part.
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Old 07-21-2011, 10:45 AM   #19
rwspringer01
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check engine, sputtering

Quote:
Originally Posted by Bish View Post
First post, and I have a question. I have a 2003 Sport trac that has been rough idling and/or sputtering when stopped or first started in the AM. The check engine light came on the other night. Advantage Auto read the codes (O2 sensor) and recommended using a gasoline treatment. Not surprised that didn't work. Any suggestions?
I have same vehicle, same results. I found the solution here on this site. A common problem is the pvc valve hose. if you search this site there is a post that has pics, and how to fix. I had a shop check my engine light when I had my oil changed, he gave me an estimate of $579.00 said I had 2-o2 sensors bad. threw the same codes at autozone. after finding the solution on this site the total cost was $2.79 I replaced the rubber elbow on top of the engine on passanger side. autozone seemed to be aware of the problem and gave me a small L shaped that worked great. good luck, hope this helps
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Old 03-24-2013, 02:36 PM   #20
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Wink Thank you so much!

Quote:
Originally Posted by Wade Davis View Post
Infamous hose leak before:





and after:

This was exactly my issue with my 2003 Sport Trac. Your photos proved to be spot on, and I hope they help many more users save big money!
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