2019 F150 shudder
Because of the hard shifting and clunking with the original transmission program I got the new program probably 18 months ago and the shudder developed. I asked if there was a new program to remove the shudder and was told no by the dealer but I could go back to the old program.
The shudder happens at about 25 mph because of being in to high a gear, switching to tow mode eliminates the shudder and all is good. If I changed to a taller tire from the stock 275/55/20 would it force a downshift and eliminate the shudder? The new trucks run 275/60/20 and I wonder if that is the reason. My opinion is that Ford won’t correct the real problem because it would change their overall CAFE mpg. |
Are you sure you don't need new spark plugs?
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It didn’t start to shudder until after transmission program. 35000 mi
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Which engine and how many miles on it now?
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3.5 turbo and 40000 mi
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I'd change the spark plugs as per glc's recommendations.
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Yes, the Ecoboost is rough on plugs, 40k is about all they last. Whether it helps or not, it's a good idea to change them.
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