check it with the auto scanner it said it was the coil pack
put a new coil pack,plugs, wires on it did not solf the problem.

the 98 ford f150 4.2 truck sounds like it's running on 4 spark plugs


hear it @ http://www.youtube.com/watch?v=PYlQZI4wx7g

thank for any help you can give me.

 

Can't really tell from the vid - lotts of shaking tho, make sure your wires are right . Theres been times in the past with older vehicals when I was sure they were in the right fireing order, still got them wrong somehow. Double check it..

You've got an ignition problem so go through the steps - Look up "misfire" in this forum for help.

Push your motor hard to wake your computer up , it will report new codes, if it's failing to do so since your latest work.

Take it out on the road and put the coals to her..

Good Luck

 

OBDII is a useful thing but it does'nt tell all!
you might have an injector problem as this reads the same way. You need a better scanner to shown if the injectors are opening and for how long.
The old method was to pull a plug lead till it made no difference and that was the problem cylinder.

 

I know they use a "noid light" (there cheap)to check injectors - I don't use one , so I don't know exactly what they tell you. I use a meter.

 

What is the EXACT code?

There are NO codes that tell you specifically that a part is bad. It's a matter of using the code(s) as part of a REAL diagnosis, not a guess.

Steve