I just changed my plugs and wires and now when I hit 50 to 60 mph There is a big jerking and the truck shakes. I double checked the firing order and it's all correct. When it's in over drive I don't notice it much just when over driver is off. What would be the cause of this?

 

You have a miss. Recheck firing order, and plug wire routing.

 

I've checked it over and over. Took all the wires off and redid them many times. I tried with the old ones and I'm still getting the same thing.

 

What spark plugs did you put in there?

 

Autolite 3924 from Auto Zone and the plugs are autolite as well. I tried swapping the old plugs and still have the miss. The old spark plugs are pretty much shot, I just bought the truck almost a year ago and don't know when these where replaced last some of the plugs were corroded

 

I got it solved. Got a code scanner from my cousin. #8 and #5 where problems. I routed them as should be and #5 was still a problem. I don't know if something fell into the #5 hole or was tightened to much but there was no gap at all. After fixing the gap problem no check engine and code scanner is clear from codes.