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7.3 rough idle

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  #16  
Old 06-17-2012, 03:54 PM
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PaysonPSD PaysonPSD is offline
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Originally Posted by gearhead351 View Post
I have solved my issue! I had a tiny fuel leak that was introducing air into the system. The fpr return line was the culprit. The hard line with the nut on it has a tiny rubber seal INSIDE the nut was trashed. Few bucks at ford my truck runs excellent. The smooth idle has returned. My truck always ran good in the throttle but that seal was my rough idle maker.

That seal is inside that nut. Make sure you tighten the nut down firmly; it actually seals the threading up against the fpr the rubber seals the line. I'm very happy.

7.3 return line seal - Google Search
Glad you found the problem and shared it with us.

In the future go to DieselOrings for any of your seal or o-ring needs. Best prices and customer service you will find anywhere.
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  #17  
Old 06-17-2012, 04:24 PM
chrislorl chrislorl is offline
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Well I too have had a great change. I replaced my Throttle Position Sensor. In my truck it is the whole pedal assembly. What a difference it made. But I still have a slight shutter when driving. Could you give me some more details on where this o-ring is that you replaced, maybe a picture.

Thanks and Happy Fathers Day if your a dad too.
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  #18  
Old 06-17-2012, 04:28 PM
gearhead351 gearhead351 is offline
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I too had a shudder when my torque converter Locked up. The fpr is on the fuel filter housing. It's the line coming off the top right.




These are the seals. I only used one. Happy d day! I'm not a dad yet but I am getting married next year!

http://www.dieselsite.com/fuellinesealkit.aspx
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  #19  
Old 06-17-2012, 04:32 PM
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Quote:
Originally Posted by chrislorl View Post
Well I too have had a great change. I replaced my Throttle Position Sensor. In my truck it is the whole pedal assembly. What a difference it made. But I still have a slight shutter when driving. Could you give me some more details on where this o-ring is that you replaced, maybe a picture.

Thanks and Happy Fathers Day if your a dad too.
What he replaced was the Parker fuel line sleeve (Parker 60VLV-5 Viton Sleeve 5/16") on the fuel return fitting at the FPR. See Here
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  #20  
Old 06-17-2012, 04:34 PM
gearhead351 gearhead351 is offline
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Yes thank you! That's what I was trying to find. It's super easy to change the seal
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