I go to walmart to buy spark plugs and an oil filter. Appearntly there were 3 different 5.4's in 99. They all have a letter after the engine size. One has a z behind it and i cant remember what the other two have behind them. How do i know what one i have? I did notice that two of them took the same filter and plugs but the other one is different. I am asuming that the different one is probably the lightning.

 

i believe your right, if i remember the lightning has a different oil filter. but its been so long since i had my lightning

 

i would just go with what the manual says... or check out i believe its the 8th digit in ur vin.. that might be the one.

 

Thanks for the replys. I will check the vin today. I would check the manual except i do not have one.

 

Got to f150online home page. On the right hand side there is a "Resourse" colum. Click on the one about decoding your VIN #. Not sure if it will give you what you are looking for. At least, it gives you a place to start. Good luck!

Dave

 

Just tried the VIN decoding. Did not help. Just gave me info on what my truck was and where it was made. But thanks for the suggestion.

 

What brand of spark plug do you want to buy? More than likely someone here can just tell you the part number for the plug itself rather than hoping WalMart got it right in their systems.

 

The factory plug is a Motorcraft AWSF 22E. which is an Autolite APP103 double platinum. The oil filter is the motorcraft FL820-S.

 

I would like to go with split fire plugs unless someone has a better sugestion. Does anyone have the part number for these? I did recheck walmart last night and saw that all three models took the same plugs but they only gave a listing for regular autolite plugs.

 

your trucks come with platinum plugs. Why is everyone so concerned with changing them unless they are having problems. I for one started having problems with mine at about 80,000 miles so I changes the plugs and wires and used factory 8mm wires with a bosch platinum plug but unless you are having problems or do for a 100,000 mile tune up don't worry about it.

 

Thanks

 

Just stick to motorcraft or autolite plugs. The Bosch plugs are hit and miss from what I have seen here on the boards.

 

i put bosch platinum +4's in mine and after 30,000 they were all burnt.i used ngk's which worked ok and now i have autolites which have worked fine for about 30,000 so far.

 

Fords been putting in Double Platinum plugs for some time now.

Unless I remember incorrectly the service manual says plugs are replaced as a service item at 100,000 miles.

I don't know that I'd trust them to last that long but I do know Troyer Performance says "stock factory ignition components should be replaced at 36K-40K miles or 3 years in these vehicles, whichever comes first."

Troyer is refering to the coils, wires and plugs. Of course on your truck you don't have standard coils or wires so you only have to worry about the plugs.

On a previous vehicle that I almost wished would die, I had to replace standard plugs every fall or I'd have cold weather starting problems. When I put in Bosch Double Platinums I went 5 years before I had any cold weather problems. I'm sure I put at least 80,000 miles on in those 5 years.

I'd never use anything less now.

Doug

 

Buying spark plugs from wal-mart for a $25000.00 truck is like going to a steak house and ordering a hotdog.

NAPA would have gotten you the right part on your first trip.