Hello. I have a 2007 Ford Expedition with 72,000 miles. Over the past couple of months, we have been experiencing some sort of Shudder issue. Every once in a while, when we accelerate, the truck will shudder like the transmission is slipping or the engine is missing. It only happens once in a while. I took it to a transmission shop and of course they couldn't replicate the issue after two test drives. They put it up on the rack and said everything looked fine and that there weren't any leaks and the transmission fluid was full. They were stumped and didn't know what to do since they couldn't replicate the problem. Has anyone had this problem? If so, what was the issue? Thanks for your help!
Search on spark plugs causing the issue. You'll also want to change your spark plugs soon, better to do than wait to 100K miles when they're really stuck and might break. I did mine recently and it drives better, I got the updated factory plugs off eBay for a great price.
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