Hi, I have read a lot of different things about this problem. I have a 1997 F150 4x4 4.6 Auto w/ 114,000. I had a problem with a slight shudder about 10,000 miles ago and I changed fluid all 15 quarts draining the TC and at the same time changed all plugs to Bosch Plat and Autolight Premium wires. Shudder went away know started again seemed like when engine got wet so changed out all the wires again made sure run out of way and dielectric grease on all boots. It seemed to be ok for 3,000 miles and now is getting worse. I am having a hard time believing that is TC shudder but I added Dr. Tranny Shudder fix just to try I may have been crazy but I though it made a difference but know it is worse and after it rained tonight with moisture in the air it seemed even worse should I be replacing the coils. Any help is appreciated.

 

I see your problem those stupid bosch plugs and autolite wires, yank that crap off there and put oem equipment on there before you do anything else.
Alan

 

I agree with dirty dog switch it to oem it should take care of your problem or at least its the best place to start

 

i agree..._motes