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Differences between early99 and late99-03 trucks

270K views 437 replies 122 participants last post by  Brandonpdx  
#1 · (Edited)
Early 99 has a wicked wheel in it from the factory.

The early99 has 130cc(AB code) injectors and the late99-03 has 140cc(AD code) injectors.

The early99 has 2" intake runners. The late99-03 has 3" intake runners.

The early99 has a 15* swash plate HPOP. The late99-03 has a 17* swash plate HPOP.

The early99 has one glow plug relay. The late99-03 has one glow plug relay and one air intake heater relay side by side. Both relays are on the passenger side valve cover toward the front of the truck.

The early99 has a totally different air filter that is not inter changeable with the late99-03. But you can put the late99 air cleaner assembly in the early99 truck. The only two aftermarket air filters that work on the early99 are the AFE stage 2 and the AIS.

The early99 track rod has smaller mounting bolts than the late99-03. Stock rod replacement bushings, Prothane bushing part # is 61217BL.

The early99 has shallower rotors than the late99-03.

The early99 has shorter hub-bearings than the late99-03.

The early99 front axle U bolts are square where they go over the spring pack. The late99 U bolts are round.

The early99 has a different pitman arm than the late99-03.

The early99 does not have the AIH like the late99-03.

The early99 does not have the automatic transmission fluid cooler in the radiator.

The early99 has no indicator light showing that "cruise" is on. Late99-03 has a cruise light that will come on when you set the cruise control. Some of the early99 truck have this light in the dash already. A newer PCM(Yes it will plug in and will run better too) must be used to make the cruise light illuminate. It is a green light on the right side edge, half way up.
 
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#13 ·
It will depend on the factory intake filter housing you have. If it pulls air from the fender then I do not believe it will fit.

If it pulls air from the front through a square plastic tube along side of the battery then it should fit.
 
#11 ·
The location of the badges can give it away. If it is on the fender then it is an early99 BUT it is not always the case. My early99 had them on the door. My build date is 11-20-98 and I know mine is an early99.
 
#14 ·
First off, are you the origional owner?


Have you looked to see what the PCM code is on your computer?

I have been told by the tuner boys that the early99 PCM does not have the componants in it to control the cruise light. That is why those with the early99 truck that up grade the PCM see the cruise light for the first time.

Very interesting......:confused:
 
#19 ·
The early99 trans fluid does not go through the radiator unless the radiator has been changed. The fluid only goes through the trans cooler in front and below the radiator. It is very small.
 
#22 ·
I have an early 99 build date 5/98. The fresh air is pulled through the front of the truck through a tube not the fender. What are my intake options. thanks.
You have the updated intake. Any cold air intake will work.


Keep Strokin'
 
#23 ·
12-99 is very close to the cut off date. Are you sure it is an early99? Have you checked all of the items in the first post?
 
#24 ·
pulls air through the fender, no cruise light, and only a glow plug relay hmm another hybrid? makes me wonder what hpop, turbo, and injectors i have:hehe:
 
#26 ·
Now that is interesting. Are you the original owner? if not, did the original owner do any performance mods? A lot of diesel shops tell folks to put in a new radiator, my trans guy did. The radiator was $185 including a new thermostat and thermostat cover, all installed. So it is not a big investment.
 
#27 ·
not the original owner and the previous owner did have a banks kit (exhaust, chip, gauges) installed by banks. he gave us paper work that looks to have every oil change, car wash, brake pad and everything else he bought and there is nothing in there for a radiator and he didnt mention it which i think he would have since he pointed out everything else he changed.
 
#28 ·
I will make a call to John Wood tomorrow morning. What is the actual date of MFG? It is on the driverside valve cover.
 
#29 ·
i dont know right now and the truck wont be back till tommorow. i will let you know tommorow around 2:30 probably. i do know the truck was custom ordered and picked up in 98 so is it possible he ordered it with the cooler?
 
#30 ·
It was not an option from what I have been told by the ford gurus. John will know.
 
#31 ·
the only other thing i can think of is banks did it but i dont think thats likely. he did only use the truck to tow his 11k tow box so maybe he told banks that and they did the swap. any ideas there?
 
#33 ·
I will go update that right now, I forgot to do it. The controller is only on the 99.5 and up. Not on the early99. I was wrong when I posted the list......:doh:
 
#35 ·
motor says october 6 98 and the truck says 10/98 not 12/98 like i thought. it was purchased in 12/98. i know the guy we bought it from said he didnt change the intercooler and the boost tubes say ford on them but they are 3" tubes not 2" like early 99s had.