Go Back   F150online Forums > Powertrain & Mechanical > V8 Engines
Sign in using an external account
Register Forgot Password?
Register Photos Vin Decoder FAQ Members Search Today's Posts Mark Forums Read VendorsGarage




Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-27-2008, 07:43 PM
Senior Member
Garage is empty, add now
 
Join Date: Dec 2004
Vehicle: 2002 Ford F150
Posts: 189
Service Engine Soon Light: P303 and P316 codes given

2002 SCrew 5.4 V8 - 100,025 miles.

Last week my Service Engine Soon light turned on. I had a friend pull the codes with his reader and I had a P303 and P316. Doing my research I saw that they were the misfire detected codes for cylinder #3.

Search this board and on the internet I found that possible fixes to this problem is to change plugs and the COP which I did (replaced all plugs and the COP for #3).

Still have the service light on when I started it back up after I was done. Will have my friend check the codes again tomorrow (Sunday) and see if the are the same ones.

I guess my next step would be the fuel injector? Anyone else dealt with this issue and has some insight to what could be going on?

Also just so I make sure I did things right, can someone remind me the cylinder layout of the 5.4 V8? Was I correct in thinking that the odds are on the passenger side and evens on the driver side? With numbers one and two towards the front of the engine (so #3 would have been the second one back on the passenger side)?

Thanks.
Reply With Quote
  #2  
Old 12-27-2008, 07:52 PM
Senior Member
Garage is empty, add now
 
Join Date: Mar 2008
Location: Central New York
Vehicle: 1998 Ford F150 4X4 5.4
Posts: 835
4 8
3 7
2 6 -------Drivers side
1 5

Front of truck
Reply With Quote
  #3  
Old 12-27-2008, 08:04 PM
Senior Member
Garage is empty, add now
 
Join Date: Mar 2008
Location: Central New York
Vehicle: 1998 Ford F150 4X4 5.4
Posts: 835
Quote:
Originally Posted by Ash575 View Post
2002 SCrew 5.4 V8 - 100,025 miles.

Last week my Service Engine Soon light turned on. I had a friend pull the codes with his reader and I had a P303 and P316. Doing my research I saw that they were the misfire detected codes for cylinder #3.

Search this board and on the internet I found that possible fixes to this problem is to change plugs and the COP which I did (replaced all plugs and the COP for #3).

Still have the service light on when I started it back up after I was done.
You have to have the code cleared to turn the CEL offWill have my friend check the codes again tomorrow (Sunday) and see if the are the same ones.

I guess my next step would be the fuel injector? Anyone else dealt with this issue and has some insight to what could be going on?

Also just so I make sure I did things right, can someone remind me the cylinder layout of the 5.4 V8? Was I correct in thinking that the odds are on the passenger side and evens on the driver side? With numbers one and two towards the front of the engine (so #3 would have been the second one back on the passenger side)? You changed the #2 cylinder

Thanks.
Best advice, Get yourself running by replacing the #3 cylinder COP (coil over plug), have the code cleared and see what happens from there. Next, I would change out all of your COP's. Your best bet is to buy them from Ebay. You will buy all 8 of them, between $70.00 to $75.00 dollars plus the shipping. There are a 2 sites on Ebay to get them for this price. There has been a bit of controversy lately about which site to buy from, so I will stay neutral and recommend you do some research and make your own decision.
You can research Ebay feedback and this site and make a decision from there.

Good luck and let us know how it works out for you.

TJKinCNY
Reply With Quote
  #4  
Old 12-28-2008, 03:47 PM
Senior Member
Garage is empty, add now
 
Join Date: Dec 2004
Vehicle: 2002 Ford F150
Posts: 189
Quote:
Originally Posted by tjk_in_cny View Post
4 8
3 7
2 6 -------Drivers side
1 5

Front of truck
TJK, Thanks for the numbering.

Hmmm.. Well from that layout it looks I replaced the wrong COP. Looks like I replaced #2.

Had my friend check the codes again today and was getting the same codes. Probably wont have time until next weekend to work on it.

I saw from doing a little bit of research on the term "misfire" a few of the threads with those links to the ebay sites. Ill see if I can get #3 working again and then probably this spring buy the set and replace them all.

Thanks for the replies.
Reply With Quote
  #5  
Old 12-28-2008, 05:57 PM
Senior Member
Garage is empty, add now
 
Join Date: Dec 2004
Vehicle: 2002 Ford F150
Posts: 189
BANG BANG!! Put the orginal #2 COP back in and moved the new COP to the correct #3 and she is running like a champ again. She has more pep than before with those new plugs too.
Reply With Quote
Old 12-28-2008, 05:57 PM


 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -4. The time now is 08:38 PM.


 
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details

Search Engine Friendly URLs by vBSEO 3.5.2