Took my truck to the shop today, they ran a diagnostics check with no codes showing up. My truck starts jerking around 40 - 50 mph only lasts a few seconds then all is back to normal. The mechanic drove it and it did start jerking for him,he ran another test again no codes. Anyone else go through this? My truck is a 05 King Ranch with 102000 miles.

 

what all have you done to this point? plugs, filters, etc?

 

routine oil and filter changes, was planning on changing plugs this weekend to see if that will help.

 

Could be a bad cop or even a bad fpdm. Do you live in an area with lots of road salt during the winter?

 

Plugs would typically set a engine miss code.Sounds like a fuel problem

 

Was this a ford dealer? Also to set a check engine light for missfire has to a miss on same cylinder three times in a row.

 

tune-up time for sure...

 

I live in Austin Tx, no salt on the roads, and yes it was the dealer shop.

 

Your 2K miles over the recommended plug change...that may be your problem.

 

check the fuel pump driver moduel u dnt need salty roads to rust it out.