I haven't driven the F-150 for a couple months and for the past 2 weeks I have been driving it to work (wife usually drives it to park and ride to catch the bus). Yesterday after my 10 mile commute the truck started to get shake pretty hard when accelerating from a stop. At the next light the RPMs would suddenly drop, so I put it in Neutral and the RPMs went up, put it back into D and accelerated and it was really sluggish from a stop and again when accelerating about 30mph. Today it was only sluggish when accelerating from 20-30mph. I am guessing tranny because whenever I take it out of gear the problem goes away.

When I got home yesterday I checked the fluid and it was full and not discolored.

Any ideas?

 

Has the check engine light come on? If so, go over to Autozone and get the codes read.

 

No lights or anything.
I am only leary because I will be towing our trailer to Yellowstone this summer.

 

You have a COP that has just failed.

Make it turn on the CEL (hammer on the fault condition) then scan to find out which cylinder just died.

You won't be towing anything anywhere until fixed.

Steve

 

Can you explain this to me? I just lost a cylinder?

 

Not a tranny problem.
Local shop said it is due to running lean, the spark plugs were white.
Concluded that the PCV vavle is clogged, the fuel filter is bad and a couple of coil packs are corroded.

So we will see if everything is fixed.
They are also changing out all the fluids, except the oil (I like to do that myself). So I will be getting Tranny, radiator, T-case and both axles with fresh fluid in them.

 

COP = coil pack.

It's more likely a PCV-related lean condition is a cracked elbow behind the engine, not a clogged valve.

 

The PCV vavle was bad is all they told me.
Two coil packs had to be replaced, one was corroded and the other burnt.
Got all new plugs, fuel filter, the works basically.

Runs like a new truck.
Should get an increase in MPG as well.

 

Good deal.