replacing coil packs

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Aug 31, 2005 | 02:11 PM

#16

mjamie12

New User

Joined: Aug 2005

Posts: 2

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Quote:

Originally Posted by dpkfordtruck

I have a 97 Ford F-150 with the 5.4L V-8 engine. It has right at 110,000 miles on it. Recently I had the throttle body cleaned because the gas pedal had a hard place in it when you first pressed down on it after it had set for a while. That cost $108. The garage said they got almost a coffee cup full of buildup. It ran fine for a while. Now the Check Engine light has come on and it idles and runs very roughly. I took it to a garage and had it checked and they said the coil packs need to be replaced to the tune of $1,400.

Can anybody out there give me an indication as to whether or not this is what needs to be done?

Thanks.

Hope I'm not too late here. It sounds like you might have a bad coil pack. Do not have the garage do them, though. A single bad coil pack can cause your symptoms. If all of them were bad, your truck wouldn't run. A coil pack for my '97 F250 ran about $100 at Auto Zone. They are held on by two screws, which is why paying someone to do this is silly. What you should do is shoot over to Auto Zone and find out which cylinder is misfiring. (If your check engine light is on, they will scan your vehicle for free). If your firing order is the same as mine, start in the lower left as you view from the front.
Should look like this:

BACK
4 8
3 7
2 6
1 5
FRONT

Replace only the coil pack that is causing the problem. The entire job should only take about ten minutes. If it's not the coil pack, and I'd be surprised if it isn't, then you have a truck with a brand new $100 part in it, which isn't so bad. Also, if you have no idea how to do auto repair, buy the part and match it up to the part in your truck. This is how I first learned basic repair.

Aug 31, 2005 | 03:10 PM

#17

warmdye

Elder User

Joined: Apr 2002

Posts: 541

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From: Paducah KY

Alot of times the computer will not throw a code and you will have to manually change each one out until you find the culpret. I had to do that when one of mine when out with no check engine light.

Nov 23, 2005 | 11:04 AM

#18

braclark

New User

Joined: Nov 2005

Posts: 2

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You can also get the whole coil pack, boot and spring for about $40 at:
http://www.wittydeals.com/product_in...products_id=97

Nov 23, 2005 | 01:33 PM

#19

fordguyforlife

Junior User

Joined: Feb 2005

Posts: 80

Likes: 0

From: Baton Rouge, LA

Quote:

Originally Posted by LxMan1

All 5.4L have COP's 97-up. 4.6L has coil packs 97-98 and COP's 99-up

i'm a little confussed. my dad has a 99' F250LD with the 4.6, and it has coil packs and wires. did ford make the change half way through the model year? or is this just something special for the 250LD?