getting ready to do maf swap
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Freshman User
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getting ready to do maf swap
Wow there is alot of info on doing the maf swap.....but it is all running together? i have recently pulled the ecm, and all the harness from 94 maf 302 bronc and want to drop it in to my 94 5.8 bronc (speed density ).....has anyone done this... i have all the sensors ,distributor the whole nine yards from the donor bronc. i am alarmed by a seeming non existant bap on donor (not on the firewall) i would like to reuse the most of the main harness as possible cause it wil be a CF to change the whole thing ! seemed like a great idea to start with but i may be in for s**t-storm warning . worried i may be in over my head !!!!
any ideas appreciated
any ideas appreciated
Senior User
Joined: Jan 2011
Posts: 120
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From: Medicine Hat, AB, Canada
The 5.0 dist won't work.
You may need to get one from a 96 if your module is on the distributor.
I would think it would be easiest to switch over the entire harness because of the maf sensor. The 5.0 has a knock sensor which the 5.8 doesn't have but seen on here you don't have to hook it up. Both trucks have the same tranny?
You may need to get one from a 96 if your module is on the distributor.
I would think it would be easiest to switch over the entire harness because of the maf sensor. The 5.0 has a knock sensor which the 5.8 doesn't have but seen on here you don't have to hook it up. Both trucks have the same tranny?
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
According to Ryan's chart the truck MAF system does not use a BAP: Ford Fuel Injection - Truck Pinouts
He also mentions that Ford figured out by 1994 the BAP (aka BP, Barometric Pressure sensor) was not necessary: Ford Fuel Injection » Barometric Pressure Sensor (BP)
He also mentions that Ford figured out by 1994 the BAP (aka BP, Barometric Pressure sensor) was not necessary: Ford Fuel Injection » Barometric Pressure Sensor (BP)
Postmaster
Joined: Mar 2008
Posts: 2,703
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From: Des Moines, Iowa
Wow there is alot of info on doing the maf swap.....but it is all running together? i have recently pulled the ecm, and all the harness from 94 maf 302 bronc and want to drop it in to my 94 5.8 bronc (speed density ).....has anyone done this... i have all the sensors ,distributor the whole nine yards from the donor bronc. i am alarmed by a seeming non existant bap on donor (not on the firewall) i would like to reuse the most of the main harness as possible cause it wil be a CF to change the whole thing ! seemed like a great idea to start with but i may be in for s**t-storm warning . worried i may be in over my head !!!!
any ideas appreciated
any ideas appreciated
We have yet to have someone make a HOW TO on this subject. Even though there are so many guys interested in doing it. You should take pics along the way on each step and do a complete HOW TO thread on doing the SD to MAF swap with junkyard parts!
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Freshman User
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we will see what we can do . i might need some help to cronicle this ...posting pics ect ...
these are both 94 trucks 5.0 maf (donor)and 5.8 sd
oil pump shaft size difference between 50 and 5.8 got it ,there is a difference in where the tfi module is (inside fender close to where ecm harness plugs in to firewall) and tfi is on distributor on the 5.8 speed density which is another difference i have already noticed...
49$ for 1995 steel gear 5.8l distributor w/o module with core ,lifetime warranty (autozone)
seems that maf ecm needs to know #1 position but new dist will cure this ... there will be heartache involved with this even when planned well....i will do alot of reasearch up front to minimize down time of my trusty eddie bauer
these are both 94 trucks 5.0 maf (donor)and 5.8 sd
oil pump shaft size difference between 50 and 5.8 got it ,there is a difference in where the tfi module is (inside fender close to where ecm harness plugs in to firewall) and tfi is on distributor on the 5.8 speed density which is another difference i have already noticed...
49$ for 1995 steel gear 5.8l distributor w/o module with core ,lifetime warranty (autozone)
seems that maf ecm needs to know #1 position but new dist will cure this ... there will be heartache involved with this even when planned well....i will do alot of reasearch up front to minimize down time of my trusty eddie bauer
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
What transmission does each of these trucks have? The 5.0 MAF EEC will run a 5.8 no problem but it's very likely these trucks have computer controlled transmissions and that will present issues(problems) if both trucks dont have the exact same trasnmission.
For these trucks it's easier to make an overlay harness from the donor than to swap out the whole thing because the engine harness is integrated with the chassis harness so it won't simply disconnect you have to cut a lot of wires. It's also easier because you don't need the whole harness you just need the portions for the injectors and MAF meter.. about 13 wires total. I suggest you strip all the tape and loom off the donor harness and seperate these wires, and then wrap them up seperately in preparation to add them to your truck. Note: these wires have to be complete from the component connectors all the way back to the pins that go into the EEC connector because these pins do not exist in the SD EEC connector. But fear not because the EEC connector comes apart to facilitate adding or moving pins, so its also an option to remove the SD injector wiring(3 wires) while you're in there since you have to pull these pins out of the EEC connector anyway. Follow the link to see how the connector comes apart... http://ww.fordfuelinjection.com/index.php?p=74
For these trucks it's easier to make an overlay harness from the donor than to swap out the whole thing because the engine harness is integrated with the chassis harness so it won't simply disconnect you have to cut a lot of wires. It's also easier because you don't need the whole harness you just need the portions for the injectors and MAF meter.. about 13 wires total. I suggest you strip all the tape and loom off the donor harness and seperate these wires, and then wrap them up seperately in preparation to add them to your truck. Note: these wires have to be complete from the component connectors all the way back to the pins that go into the EEC connector because these pins do not exist in the SD EEC connector. But fear not because the EEC connector comes apart to facilitate adding or moving pins, so its also an option to remove the SD injector wiring(3 wires) while you're in there since you have to pull these pins out of the EEC connector anyway. Follow the link to see how the connector comes apart... http://ww.fordfuelinjection.com/index.php?p=74
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Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
we will see what we can do . i might need some help to cronicle this ...posting pics ect ...
these are both 94 trucks 5.0 maf (donor)and 5.8 sd
oil pump shaft size difference between 50 and 5.8 got it ,there is a difference in where the tfi module is (inside fender close to where ecm harness plugs in to firewall) and tfi is on distributor on the 5.8 speed density which is another difference i have already noticed...
49$ for 1995 steel gear 5.8l distributor w/o module with core ,lifetime warranty (autozone)
seems that maf ecm needs to know #1 position but new dist will cure this ... there will be heartache involved with this even when planned well....i will do alot of reasearch up front to minimize down time of my trusty eddie bauer
these are both 94 trucks 5.0 maf (donor)and 5.8 sd
oil pump shaft size difference between 50 and 5.8 got it ,there is a difference in where the tfi module is (inside fender close to where ecm harness plugs in to firewall) and tfi is on distributor on the 5.8 speed density which is another difference i have already noticed...
49$ for 1995 steel gear 5.8l distributor w/o module with core ,lifetime warranty (autozone)
seems that maf ecm needs to know #1 position but new dist will cure this ... there will be heartache involved with this even when planned well....i will do alot of reasearch up front to minimize down time of my trusty eddie bauer
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Freshman User
Joined: Feb 2011
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keep it comeing guys i feel better about it ....i really didnt want to have to swap all the wireing and was makeing me squeamish...and was wanting to bail ... keep the info flowing ....i will make some pics useing you guys info and this way we can refer others wanting to do this ...i knew i wouldnt want to do this on my own THANKS TO ALL for any help ...
i will take another look at my distributor i could have had a brain fart on that .... if it will work that will be great ....i wont have to pull it
i will take another look at my distributor i could have had a brain fart on that .... if it will work that will be great ....i wont have to pull it
Fleet Owner
Joined: Oct 2005
Posts: 20,786
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From: Kentucky
Ford Fuel Injection » Stator (RPM)
I also confirmed my '92 Speed Density 5.8L has the same stator as described in the reference from Ryan above.
I also confirmed my '92 Speed Density 5.8L has the same stator as described in the reference from Ryan above.
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Freshman User
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Would you splice and solder and heat shrink at this junction ?
(where main and injector harness connect)
useing the injector wires out of the donor main harness so that it will have needed pins for ecm connector ... would be kinda cool to be able to repin connector where main and injector harness connect and intigrate the harnesses but that is getting away from k.i.s.s (keep it simple stupid)
a separate maf harness could be similar? what other things are different bap/map, knock sensor...ect
(where main and injector harness connect)
useing the injector wires out of the donor main harness so that it will have needed pins for ecm connector ... would be kinda cool to be able to repin connector where main and injector harness connect and intigrate the harnesses but that is getting away from k.i.s.s (keep it simple stupid)
a separate maf harness could be similar? what other things are different bap/map, knock sensor...ect
New User
Joined: Mar 2011
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http://fordfuelinjection.com/MAF-Con...nE4OD-PMAS.pdf
I DID SOME DIGGING AND I FOUND THIS. IT HELPED ME OUT ALOT. I ASKED ON HERE AND THEN I FOUND THIS AND IT HAS PICTURES. SO IT MAY HELP YOU OUT. IT IS FOR STANDARDS ONLY THOUGH NOT AUTOMATICS. I DIDNT SEE IF YOU HAD THE AUTO OR NOT . IF YOU DO SORRY. MAYBE SOME OTHER GUYS WILL SEE THIS THAT NEED THE HELP.
I DID SOME DIGGING AND I FOUND THIS. IT HELPED ME OUT ALOT. I ASKED ON HERE AND THEN I FOUND THIS AND IT HAS PICTURES. SO IT MAY HELP YOU OUT. IT IS FOR STANDARDS ONLY THOUGH NOT AUTOMATICS. I DIDNT SEE IF YOU HAD THE AUTO OR NOT . IF YOU DO SORRY. MAYBE SOME OTHER GUYS WILL SEE THIS THAT NEED THE HELP.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
I took quite a few pictures when I was doing my MAF swap using the RJM harness, but they have become lost in cyberspace somewhere. One day I will try to put together something, but it will be awhile before I have time to put together a write up on such an in depth process. It is quite a bit more complicated than I thought it would be.
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that will help some, if i could find the pin out for the ford truck w/ e40d and maf in that format that would be freakin awesome ,i would like to be able to use two o2 sensors like the a9L uses , i guess that tweecr might could readjust the truck ecm up to a9L mustang specs to give it some more punch , i guess i could reverse engineer from the donor connector ....
this would be awesome on a 2wd 5.0 5speed f150 , make it lots of fun
so just remove map sensor altogether ?
this would be awesome on a 2wd 5.0 5speed f150 , make it lots of fun
so just remove map sensor altogether ?