Newbie here...let me see if I can explain this here. I have a 97 F150 Supercab 4.6L with about 75K miles. I 've had the transmission fluid changed within the last 3 years, replaced some sensors and the fuel filter...

My problem is that I first noticed my truck having a bad vibration when I pulled my boat but only when it got up to about 60mph. I now seem to feel it about at that same mph range.

Now I don't know if I am paranoid but I also feel sometimes that when I step on my gas, I feel like a vibration (kinda feels like I was running over those "wakeup" nudges on the side of the interstate) but then it disppears. It comes and goes.

Also sometimes when I am at a redlight, it feels like my truck bogs down but then idles back to normal..scares me that it will dead.

I could be very paranoid that I am looking for any reason for it to break down...I dunno..need any help/advice..please.

Thanks
Studog

 

Check your plugs/coils

 

I've replaced my plugs within the last year...how do I check my coils? How much would that be to have checked/replaced if needed?