302 Engine Swap Blues
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Junior Member
Joined: Nov 2007
Posts: 1
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302 Engine Swap Blues
This is my first post here and let me say you all have a great looking forum.
My dad has a 1995 F150 with the 302 in it that decided to throw a rod through the side of it.
For the replacement engine we ended up with one from a 1991 F150, but now we seem to have a few problems.
When i first got everything installed and was trying to get it started thats when i learned about the firing orders being different.
As it stands so far the only thing that came from the doner truck has been the engine.
On the '95 model i routed the firing order as original being 13726548 only to find it would not run at all, got a few backfires but that was it
. I next rewired the firing order to 15426378 that belonged to the older engine from the '91.
After doing this the truck fired up but never run right. I thought at first that it could be bad gas as it had set over a year with a quarter tank of fuel in one tank and a half of tank in the other. I ran the quarter tank completely dry and now i can not get it to start at all.
Now it doesn't appear to be getting any fire at all, so i don't really think fuel is the issue at the moment.
May main question here tonight is that. Since i have changed the firing order just by rewiring the plug wires, do i need to change the fuel injection harness around in someway , or do i need to use the computer from the other truck? In the small amount of time i have had it running , could I have messed up something electrical causing it to not fire at all now? which would be best.
After changing the firing order i still could not figure out how it would actually run as thats all i changed, it did seem to miss but i blamed that on old fuel, but i could have been the wrong injectors spraying fuel at the wrong time.
Im not a ford guy but i can fix it with a little or lots of help from the ford pros on this board.
As i said its my dads truck and it would mean a lot to get it going for him as well as he has been driving a f150 of one year or another for over 40 years that he has driven.
I am truly sorry for all of the questions here tonight, just need to get this truck back on the road.
1995 Ford F150 5.0 using TFI-IV ignition system with remote mounted ICM.
My dad has a 1995 F150 with the 302 in it that decided to throw a rod through the side of it.
For the replacement engine we ended up with one from a 1991 F150, but now we seem to have a few problems.
When i first got everything installed and was trying to get it started thats when i learned about the firing orders being different.
As it stands so far the only thing that came from the doner truck has been the engine.
On the '95 model i routed the firing order as original being 13726548 only to find it would not run at all, got a few backfires but that was it
. I next rewired the firing order to 15426378 that belonged to the older engine from the '91.After doing this the truck fired up but never run right. I thought at first that it could be bad gas as it had set over a year with a quarter tank of fuel in one tank and a half of tank in the other. I ran the quarter tank completely dry and now i can not get it to start at all.
Now it doesn't appear to be getting any fire at all, so i don't really think fuel is the issue at the moment.
May main question here tonight is that. Since i have changed the firing order just by rewiring the plug wires, do i need to change the fuel injection harness around in someway , or do i need to use the computer from the other truck? In the small amount of time i have had it running , could I have messed up something electrical causing it to not fire at all now? which would be best.
After changing the firing order i still could not figure out how it would actually run as thats all i changed, it did seem to miss but i blamed that on old fuel, but i could have been the wrong injectors spraying fuel at the wrong time.
Im not a ford guy but i can fix it with a little or lots of help from the ford pros on this board.
As i said its my dads truck and it would mean a lot to get it going for him as well as he has been driving a f150 of one year or another for over 40 years that he has driven.
I am truly sorry for all of the questions here tonight, just need to get this truck back on the road.
1995 Ford F150 5.0 using TFI-IV ignition system with remote mounted ICM.
Senior Member
Joined: Sep 2007
Posts: 481
Likes: 13
From: Columbus GA 31909
The EEC(computer) or cam need to be changed or injectors be rewired,, those are the options. If you truck is an Automatic then I doubt the EEC will work with the 95 tranny. And rewiring may take as long as putting another cam...