farmerboy3

ok i might sound like a fool here but i need to know some time...

i see every one here is always replacing there coil packs.... what the are they just so i know when mine go i know what they are

how do you know when they go??
where are they located?
how hard are they to replace
and how much is it??

JRV

They are in front of each bank on your engine...the plug wires run to them. You'll know when they go because you'll have a misfire (your truck will shake at idle and on acceleration) and a flashing check engine light. They are a piece of cake (1/2 hour) to replace and only cost about $55 for a NAPA brand. Motorcraft will be considerably more, around double. The NAPA I have works juuuuust fine.

jacobs4x4

What truck do you have. Year/Model/Engine size

farmerboy3

i have a 1997 ford f150 4.6L 2wd

jacobs4x4

That will help you get some answers.

I dont know what are the differences in each truck but my 97 F250 has COP coil on plug which is a coil pack on each plug. Thats how mine is.

proudfordowner

just remember when you replace the wires, its always a good idea to replace one at a time.. saves you the hassle of figuring out witch one goes where..
stephen

torkum

This is a single COP

torkum

This is a 6 cylinder coil pack

farmerboy3

oh i see thanks for all the help

harley9703

first i dont believe you have c.o.p.s (coil on plug) im pretty sure you have 2 coil packs in front of the passanger head that your plug wires run too simular to the 6-cylinder one torqum showed.