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Vibration during shifting

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Old Jul 14, 2014 | 06:57 AM
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Vibration during shifting
I have a new vibration in my 2003 Excursion, occurs during the last shift around 45 mph. The engine is also running very rough and the engine light is now on. Not sure if the 2 issues are related, but they both started about the same week.

A buddy of mine said he had a similar experience w/ his 99 Expedition and it was the fuel injectors. I'd rather it be the injector than a transmission issue. Thanks.
 
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Old Jul 14, 2014 | 12:09 PM
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gas?..............
 
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Old Jul 14, 2014 | 12:38 PM
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sorry, yes, v10 gas.
 
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Old Jul 14, 2014 | 03:04 PM
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Originally Posted by galusham
sorry, yes, v10 gas.
Water in the holes and contaminated boots can cause that sensation.
 
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Old Jul 14, 2014 | 03:09 PM
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Originally Posted by EXv10
Water in the holes and contaminated boots can cause that sensation.
Feels like I'm listening to Loveline with Dr. Drew.
 
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Old Jul 14, 2014 | 03:17 PM
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Originally Posted by galusham
I'd rather it be the injector than a transmission issue.
It is almost certainly an engine issue, not a trans problem. Most of the time it is a one or more ignition coils and/or spark plugs.
 
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Old Jul 14, 2014 | 03:32 PM
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It's usually the wet plug boots.
 
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Old Jul 15, 2014 | 07:14 AM
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Thanks. I most likely still have the original plugs at 120k miles so that's probably it. Still saving up to have them replaced, LOL...
 
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Old Jul 15, 2014 | 08:36 AM
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Originally Posted by galusham
Thanks. I most likely still have the original plugs at 120k miles so that's probably it. Still saving up to have them replaced, LOL...
Do it yourself. Any slight load at low rpms and high speed can cause that type of missing.
 
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