This page exists to contain all of the information I have on doing a Ford EFI
swap and was started as a separate page for doing this swap on my
1964
Ranchero. Most of the information that was originally on that page has been
moved here. This page is based on research via Google and lots of web sites,
in particular the fine folks over at
http://www.fordfuelinjection.com/.
The basic idea is to take the entire fuel injection setup - intake manifold
and all - from a 1989-1992 Mustang 5.0 and drop it onto an earlier Ford 302 (or
similarly compatible) engine. The 1989-1992 engines offer all of the desirable
pieces for this swap, though various parts can come from earlier and later
vehicles, these years are what contain the "complete" system you want to use.
It's a mass airflow style system and is readily adaptable for various swap
situations.
If you need to use this on a 351-style engine, a Ford Explorer 5.8L lower
intake is needed in place of the 5.0L lower intake used on the Mustang.
All parts are from a 1989-1993 Mustang unless listed otherwise. This stuff is constantly
up for auction on eBay and readily available in wrecking yards, so there is zero
pressure to "buy today". Take your time and gather all of the parts you need
before you start performing the swap on your vehicle.
| Part |
Sugg. Cost |
Source |
Details/Notes |
| Air Filter |
|
eBay or new |
Mount a K&N style filter onto the front of the MAF sensor, or create
a custom cold air intake system if desired. Factory air box will not
work in retrofit applications. |
| Fuel Pump Inertia Switch |
|
eBay or junkyard |
Turns off fuel pump in case of crash. A "must have" safety feature! |
| Low Pressure Fuel Pump |
$60-$90 |
New |
Carter
P4070,
P4600HP, or similar. |
| High Pressure Fuel Pump |
$120 |
New |
Carter
P74028 or similar. |
| Air Intake Tubes |
|
eBay or junkyard |
These are the flexible rubber tubes that go from the from air box to
the MAF sensor and from the MAF sensor to
the throttle body. Get clamps with hose. Can be replaced with an
aftermarket cold air intake kit if desired. |
| MAF Mounting Bracket |
|
eBay or junkyard |
I got tired of hunting for this and just outbid everyone to win this
auction. I really could have gotten these for much less if I had
more patience. |
| MAF - Mass Air Flow Sensor |
|
eBay or junkyard |
Get mounting bracket along with the sensor. |
| Fuel Filter |
|
New |
|
| Lower intake |
$75-$150 |
eBay
or junkyard |
Needs ACT mounting boss already drilled and tapped. Suggested cost
is for a package with upper + lower intakes, injectors, fuel rail, and
throttle body. |
| Upper intake |
|
eBay
or junkyard |
1986-1993 Car and 1996-2001 Explorer suggested for clearance issues |
| Intake Cover Plate |
|
eBay or junkyard |
Name plate that goes on upper intake manifold. Purely cosmetic. |
| Fuel Injectors |
|
eBay
or junkyard |
Orange 19 lb/hr suggested. (Tan = 14 lb/hr, Blue = 24 lb hr) |
| Fuel Rail |
|
eBay
or junkyard |
Drivers side regulator preferred. Regulator side must match throttle
body side. Use return style from before 5/3/1999. |
| Fuel Pressure Regulator |
|
eBay
or junkyard |
|
| Springlock Fuel Line Fittings |
|
eBay
or junkyard |
Get Nylon fuel lines and cut the ends off. Remove the remnants of
the nylon lines and
you have a Ford springlock fitting that will accept a standard rubber
fuel hose. |
| Coolant Hard Lines |
|
eBay
or junkyard |
Mounts to intake, provides throttle body warm-up lines and sanitary
coolant hose routing. Get them with the intake if possible. |
| ECT - Engine Coolant Temp Sensor |
|
eBay
or junkyard |
|
| ACT - Air Charge Temp Sensor |
|
eBay
or junkyard |
|
| Throttle body |
$20-$50 |
eBay
or junkyard |
1985-1993 Mustang will work. |
| TPS - Throttle Position Sensor |
|
eBay
or junkyard |
|
| IAB - Idle Air Bypass |
|
eBay
or junkyard |
|
| Computer and Mounting Bracket |
$75-$125 |
eBay or junkyard |
Codes A9L, A3M, A3M1, D3D1, S0Z, A9S, A9M, A9P, C3W, and C3W1. X3Z
is not preferred, but acceptable if cheap. I got an A9P computer. |
| "Body" Wiring Harness |
|
eBay or junkyard |
Build from scratch or buy used to start with. |
| O2 Sensor Wiring Harness |
|
eBay or junkyard |
Build from scratch or buy used to start with. |
| Ignition coil |
$10-$25 |
eBay or junkyard |
Aftermarket replacements available, but not required. Factory EFI
units work just fine and are dirt cheap. |
| BP - Barometric Pressure Sensor |
|
eBay or junkyard |
Similar to MP Sensor used on earlier SD systems, but left open to
the atmosphere. |
| Engine Wiring Harness |
|
eBay or junkyard |
Build from scratch or buy used to start with. |
| HEGO - Heated Exhaust Gas Oxygen Sensor |
$35-$50 each |
New |
Buy new units. Two needed - one per side. |
| Distributor |
$20-$100 |
eBay or junkyard |
Need to figure out how to interface with an MSD box. Must have TFI
module on distributor. |
| TFI Ignition Module |
|
eBay or junkyard |
May not be needed with MSD ignition setup? |
| VSS - Vehicle Speed Sensor |
|
eBay or junkyard |
Must provide speed signal. Retrofit applications must also drive a
mechanical speedometer cable. |
| VSS and Transmission Wiring Harness |
|
eBay or junkyard |
Build from scratch or buy used to start with. |
| Throttle Cable |
|
eBay or junkyard |
EFI uses a different length and hookup style than a carb |
| Throttle Pedal |
|
eBay or junkyard |
My original linkage and pedal use a solid rod, so it all might need
replacement. Grab as much as you can at once in case you need it later. |
| EGR Valve |
|
eBay
or junkyard |
|
| EGR Vacuum Regulator |
|
eBay
or junkyard |
|
| EGR Position Sensor |
|
eBay
or junkyard |
|
| Thermactor Air System |
n/a |
eBay or junkyard |
Smog-only. Not needed for pre-smog-era vehicles. |
| Assorted Vacuum Solenoids and Hoses |
|
eBay or junkyard |
Grab everything you can while you're there. You likely won't use all
of it, but leaving the thermactor air system solenoids hooked up but not
connected to any vacuum lines is a cheap way to fool the computer into
thinking the emissions goo is there and working. The vacuum lines are
nice plastic pieces with rubber ends meant to last for years, so get
them while you're there. |
| KS - Knock Sensor |
n/a |
eBay, store, or junkyard |
Can't find this mentioned on any of the diagrams or parts lists. It
appears to not be used on Mustang EFI systems, even though
http://fordfuelinjection.com/?p=10 and
http://fordfuelinjection.com/index.php?p=34 show that some Ford EFI
systems use them |
