Hey everyone, I am fairly new here. I have posted before and have gotten great advice, So I havea few more questions. I pulled out the 4.6 in my 2000 expedition and replaced it with the 5.4 from a 1998 F-150. The swap went great but it ran like crap , stumbles sounds crappy just runs like crap LOL. After further inspection I noticed that there were some wires that were not hooked up 1 was the CHT which I cannot locate on the 5.4 so any help would be greatly appreciated. Are there any other wires that if not connected would make this thing run like crap? I now have a tuner but until all the wires are hooked up I am not gong to install it. Any insight would be great, has anyone else ran into these problems. There are three wires right now that are not connected and i can not find a home. Like I said before i know one of the wires is the CHT but i need to locate it, on the 4.6 it was on the top of the block under the manifold. Please help!!!!!

 

I have a '98 f-150 I used a 2001 5.4 but retained all the 4.6 computer and accesories.
The truck will start and run but it idles at aprox 2500-3000 rpm
almost like it is choking at startup and never comes off choke.
Can some one advise me if I can get this conditioned tuned out or if I have vacume lines that will corret for this.
I eliminated the exhast prewarm tube that goes from the header to the intake and just pluged the lines. could this cause the problem?
What kind of tunner can re-program my computer?

 

JMC, truck is a 2001 4.6 which year 5.4 would you recommend the best for the swap? I know a bunch bout the 5.4 S/C as I also own a performance built 2000 L! As with the L and this 4.6 I do know that the engines are pretty close to the same! With the tune what would I need to delete? If I can just plug the sensor in why not do that? The 4.6 intake manifold will work on the 5.4 with the intake spacers that summit and a few parts houses are selling!

JMC just for your notes the 2001 4.6 Windsor motor has a six bolt flywheel too!

 

qslowpoke- You plugged the EGR system. Yes that will cause the issues you are describing. Also check your vac lines. When I did mine I actually had the same high idle issue- I had the IAC flipped around. You may double check that as well.

 

Hi, I just finished swapping my 1997 4.6 to a 1999 5.4. I also put long tubes on. Everything runs great with no codes, but was wondering if anyone had suggestions for what type of tune I should do? I can do an 'email tune' where I send stats back to a tuner and they keep sending me a tune, or should I get a dyno tune locally?

I didn't have a donor vehicle so I ordered a re-manufactured long block and stuck that in. I had to order a salvage intake manifold and a timing chain cover, and a low stall torque converter, but other than that everything else fit well. One exception might be the EGR tube which I had to bend until it fit. Since the intake manifold didn't come with the air intake I just used the 4.6 air intake along with the entire throttle body. I also had to modify the fuel rail lines because they were too short to go around the 5.4 intake manifold, and then add a piece of Alum. angle iron because the fuel rail bolt holes didn't match up to the 5.4 intake manifold bolt holes. Following JMC's instructions helped a lot. Thanks for taking the time to write them.

 

c2betr - did you just use the same wiring harness and pcm? and gr=earboox, id you change it out?
cheers Brad ( I'm looking to do the same)

Also, i am in Australia, we have 5.4s come out in our cars hear also, would one of those fit straight in also, my thoughts are yea but i don't know about the wiring differences...

 

Yes. I used the same wiring harness and PCM that was on the 4.6. I also used the same transmission. The only things I replaced were the long block, timing change cover, intake manifold, torque converter, and exhaust manifolds. I didn't have to change the exhaust manifolds but I got so frustrated with them trying to get them out I cut the studs that connected them to the exhaust pipe-- and I wanted long tubes.

My 5.4 long block was from a 1999 f150. I'm not expert on which motor is in which vehicle. I would think an engine from car would work as long as the number of valves are the same, but I'm sure there are others on this form that can give you a lot better idea than I can.

 

Im trying to use a 94 mark viii trans in my 98 f150, how can i make it work

 

JMC,


I browsed through the majority of these posts to see if anyone has asked for or had any knowledge of this...found none and will now ask.


I have a 2005 F150 Scab with a 4.6 and would like to know about the possibility of doing a 5.4 2V direct swap.

are there any sensors on the block or intake that would be present on one and not on the other?

I am also aware of the exhaust issues, no problem there as I would at the least go with the factory 5.4 and get a custom job done at a local shop.

Also have an Edge at the moment and I would probably go with the Gryphon upgrade on that to get the most out of the package.

Thanks!
Darrell

 

Sorry to keep this thread going, but it's great and has lots of good info.

I have an 03 4.6l f150 with the seeping head gasket and recently found a donor 2000 expedition with the 5.4. I was curious if anyone knew if I could swap the gauge cluster & PCM from the expedition so I wouldn't have to get my PCM returned. I dunno if the pinouts on the PCM are the same, and what about my PATS keys?

Was also gonna pull the torque converter.

Any thoughts or suggestions?

TIA!

 

You could swap just the motor over and not have any problem and just use the 4.6 wiring harness and tranny. Read the notes it will help you with what you need.

 

I know I could swap the motor, but the question was more around using the 5.4L Expedition PCM on the f-150 harness from the 4.6L and if the pinouts where the same. The next part was around using the gauge cluster so the PATS stuff matches.

The expedition was sold before I got to it, so it's kinda pointless now.

 

All the research I have done is in the notes. If it is written that it can be done then it can. If it isn't written then I am not sure. I never did any research on the pinouts of the various PCM to cluster connectors so it is not covered.

 

I have a 1997 with a 4.6 that has a spun rod bearing than I want to swap out for a 5.4. I will be buying a 5.4 crate motor and was wondering which of the following 5.4 motors would be the best choice::

97-98 F-Series, Expedition, Navigator, Triton V8, SOHC, 330/5.4L,
RWD, Block #F75E-6015-AF, Head #F75E- 6090-C20A, Timing
Cover # F65E, F75E.

97-99 F-Series, Expedition, Navigator, Triton V8, SOHC, 330/5.4L,
RWD, Block #F75E-6015-AF, Head #F75E-6090-C20A, Timing
Cover # F65E, F75E. ENGINE CODES:7G-618,9G-618,8G-628-
AA,8G-614-AA,

99-01 F-Series, Expedition, Navigator, Not For Super Duty, Triton
V8, RWD, SOHC, Block #F75E-AG, Head # XL3E-C2DD-P.I.,

All of these motors are the same price and come with a great warranty so its just the matter of which one would be best for my truck.

 

Hello,

Vehicle from factory was a 5.4 with a 4r70 transmission I believe it is. I did all mods to adapt a 1999 ford lighting 5.4 turbocharger off a lighting. The transmission was replaced with a 4r100. I had to use the trans hardness of the 4r100 as the per existing one did not work for that setup. It plugged right into the engine bay hardness and transmission.

The problem I'm having now is the my speedometer isn't reading. Input and output sensor on trans are new from ford dealer. The speed sensor that goes on differential is new as well. I checked VSS pid with my scanner and did see VSS activity although erratic. I estimate I'm going 20mph but the VSS pid will read 45. If Ingo slightly higher rpm VSS pid reads up too 101 miles per hour then then it cuts of rpm. I assume PCM thinks I'm going over 100 and the governor kicks in. I replaced the cluster with one of another ford truck ( none lighting) still none functional dash. Transmission shift erratically as well.

Question.. Being that the truck already came with a 5.4 (none lighting) and swapped a lighting engine would the PCM be needed to be replaced? The truck idles fine it's just the p0500 VSS issue. I had the truck before installing the 4r100 trans dyno tuned. The technician there stated that I need tot install a transmission controller module..that so? I don't believe so as the ford lighting came in the 5.4 and 4r100 .

Thank you