2010 Ford F-250 Rough Idle Shudder

2010 FORD F-250
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JOHNJAMES
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  • 2 POSTS
Ford F 250 superduty V 10 triton airconditioning auto.
I m at 120000 miles had the spark plugs changed at 110000 miles mech said the wires were fine. Cal worthington in Alaska, anchorage. My truck starts up fine sounds good for a minute then starts the low up and down idle alomost dieing thing. Tach says 800 or so. On the highway if I give it a little gas at 55 mph it shutters. What do I need done? Thanks for your time.
Apr 15, 2006 at 3:41 PM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
Change the plugs and check the COP connections. Good Luck
Apr 16, 2006 at 3:24 AM
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JOHNJAMES
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Thanks....Plugs were changed 10000 miles ago. As far as checking the cop connection , am I just making sure that they are connected? Which they are. Or is there more to it?
Apr 16, 2006 at 10:55 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
They have a tendency to corrode. I have a V-10 in my RV and I found two bad COP's. Ford tells me that the don't like heat.

I also had a minor low-speed misfire and pinging. It was th EGR valve. Let me know
Apr 16, 2006 at 11:36 AM
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Suggested Repair

Inspect the coil-on-plug connectors and boots for corrosion and replace any bad coils. If low-speed misfire or pinging continues, check the EGR valve. The spark plugs were replaced about 10,000 miles ago.

Conversation Summary

A 2010 Ford F-250 Super Duty with the Triton V10 starts normally, then develops a rough, nearly stalling idle around 800 rpm and shutters on the highway under light throttle at about 55 mph. Plugs were replaced at 110,000 miles and the wires were said to be fine. The expert advised checking the coil-on-plug connections because they can corrode and fail from heat, and noted that a similar low-speed misfire and pinging was caused by the EGR valve.

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