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Fuel Tank Access Plate
3 Arm Wiper Setup
Fix Motor Mount
Roll Cage Braces
Throttle Body 65mm
Wheel Alignment
Heat Riser Replacement
Vent Window Repair
Center Console Mount
Straighten Bumper
Ford 6R80 6 spd
More Tech...
3 Arm Wiper Setup
Fix Motor Mount
Roll Cage Braces
Throttle Body 65mm
Wheel Alignment
Heat Riser Replacement
Vent Window Repair
Center Console Mount
Straighten Bumper
Ford 6R80 6 spd
More Tech...
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Need info about EFI computer
- Thread starter Johnnyb
- Start date
A9l ecu
Johnnyb,
The Part Number says 1989. That is the Mass Air Computer for a five speed. It should be good from '88 to '93.
v/r,
Mike
Johnnyb,
The Part Number says 1989. That is the Mass Air Computer for a five speed. It should be good from '88 to '93.
v/r,
Mike
WHAT IS A A9L & A9P COMPUTER?
The A9L Fox Body Mustang computer is found in 1989-1993 5 liter-manual transmission equipped Fox Body Mustangs and the A9P was found in automatic equipped 87-93 5.0L Fox Bodys. This is suppose to be best performing, most aggressive (mass air) processor used by Ford. If you are doing a mass air conversion you will need to replace your mustang's computer with an A9L or A9P depending on your transmission.
WHAT MAKES THESE A9L & A9P
COMPUTERS SO SOUGHT AFTER AND HARD TO FIND?
Finding these computers can be a task in itself. Ford has discontinued the production of the A9L and the A9P. Now these computers are being refurbished for the Fox owner looking to swap to mass air. If you are lucky enough to find one, be prepared to spend a pretty penny.
CONCLUSION
Using the A9L or A9P computer for a mass air conversion is the quickest and easiest way to get your Fox back on the road. However, locating one of the rare computers will be part of the journey. We hope this little bit of information helps when trying to figure out why you might need a A9L or A9P computer.
Tim
The A9L Fox Body Mustang computer is found in 1989-1993 5 liter-manual transmission equipped Fox Body Mustangs and the A9P was found in automatic equipped 87-93 5.0L Fox Bodys. This is suppose to be best performing, most aggressive (mass air) processor used by Ford. If you are doing a mass air conversion you will need to replace your mustang's computer with an A9L or A9P depending on your transmission.
WHAT MAKES THESE A9L & A9P
COMPUTERS SO SOUGHT AFTER AND HARD TO FIND?
Finding these computers can be a task in itself. Ford has discontinued the production of the A9L and the A9P. Now these computers are being refurbished for the Fox owner looking to swap to mass air. If you are lucky enough to find one, be prepared to spend a pretty penny.
CONCLUSION
Using the A9L or A9P computer for a mass air conversion is the quickest and easiest way to get your Fox back on the road. However, locating one of the rare computers will be part of the journey. We hope this little bit of information helps when trying to figure out why you might need a A9L or A9P computer.
Tim
Explorer ECUs
Boss Hugg,
The Explorer ECUs are a decade newer and the capacitors may be a different build and that may make them last longer. Don't know the manufacturing process on the electronics. EFI Guy may know the compatibility of a newer Explorer ECU ('97 to '02) and the older Mustang EFI configuration. That is beyond me.
v/r,
Mike
Boss Hugg,
The Explorer ECUs are a decade newer and the capacitors may be a different build and that may make them last longer. Don't know the manufacturing process on the electronics. EFI Guy may know the compatibility of a newer Explorer ECU ('97 to '02) and the older Mustang EFI configuration. That is beyond me.
v/r,
Mike
It sure would be nice to use a newer computer especially if it was available from Ford.
I'm not too far into the 93 setup, I'll read some posts about going with the explorer top end. If anybody has any input I sure would appreciate it!
Thanks,
JB
Sent from my Pixel 4 XL using Tapatalk
I'm not too far into the 93 setup, I'll read some posts about going with the explorer top end. If anybody has any input I sure would appreciate it!
Thanks,
JB
Sent from my Pixel 4 XL using Tapatalk
The ECM's are not compatible. ODBI 60 pin vs. OBDII 104 pin as I recall.
Now the hard parts as in engine EFI, some can and some can't be swapped in and out without understanding the pins and what needs to go where. I'm running a 97 Explorer TB and MAS on my 95 Stang EFI 95 Stang had most of the parts used on the Explorer.
The explorer does not have the ability to run the older distributor as it's coil on plug. No TFI....
The A9L can be rebuilt as in the board cleaned up and new capacitors. Lots of services out there. EFIGuy can look it over and repair as needed.
Tim
Now the hard parts as in engine EFI, some can and some can't be swapped in and out without understanding the pins and what needs to go where. I'm running a 97 Explorer TB and MAS on my 95 Stang EFI 95 Stang had most of the parts used on the Explorer.
The explorer does not have the ability to run the older distributor as it's coil on plug. No TFI....
The A9L can be rebuilt as in the board cleaned up and new capacitors. Lots of services out there. EFIGuy can look it over and repair as needed.
Tim
Broncobowsher
Total hack
- Joined
- Jun 4, 2002
- Messages
- 37,076
They have rebuild kits to replace the 30 year old capacitors. Not a hard fix.
Thanks Tim! My motor started as a 95 'Stang!
I'd also like ODBII, if that were an option.
So if I used a '97 explorer throttle body and '97 explorer distributor, with compatible sensors, then I should be able to use a '97 explorer computer?
If that were the case should I stick with the 95 Mustang upper and lower intake, or can I convert to the 93 Mustang upper and lower that I just bought?
THX
JB
Sent from my Pixel 4 XL using Tapatalk
Thanks Boss! I'm now thinking of converting to Explorer EFI, as you have seen from the post above this one.
-JB
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Thanks Broncobowsher! If I continue down the 93 route I'll send my computer out for rebuild.
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- Jun 8, 2010
- Messages
- 2,213
I can tell you they're not compatible. The Explorer uses EDIS (Electronic Distributorless Ignition System) while the Mustang EFI used a distributor.
All I am trying to say is a guy is better off to go with the explorer system. I will add also that I've seen people fighting the old OBD1 diagnostic system trying to find what sensor or part is malfunctioning causing their engine to run poorly. I don't hear about these failures on Explorer EFI. Yes, they are 10 years newer-ish. Take advantage of that. I'd suggest an even newer EFI tech, but after the end of SBF production the EFI systems changed drastically, and I think the only way to use them is to go to the modular engines that started after the SBF. And those don't fit in the Bronco very easily (or cost effectively.)
Explorers didn't come with a distributor........you have to go full on explorer ignition and sensors to run the explorer ECM. Your 95 will look for a TFI and the Explorer don't have one. Do you have the 95 ECM? Why are you wanting to change to 93? Just pick up a TM04 and rune the 95 harness.
Upper and lower intakes can be swapped around on/off any 302/5.0. The ECM don't know the hard parts on an engine. I run a full Explorer upper on my 95 EFI on a 351W.
It's all about the EFI sensors and components.
Tim
For sure the newer stuff is better but that said the older stuff runs well and with less sensors. Mine is stripped down to just the basics. I cut my teeth on 90-95 mustangs so the systems are what I know best.
My rig runs well with EFUGuy's tune. I took a 96 E350 van Speed Density harness and modified it to a 95 Stang Mass Air harness and she runs very well.......95 gives you the advantage of remote TFI.......and most of the Explorer EFI parts are the same......
Tim
- Joined
- Jun 8, 2010
- Messages
- 2,213
I watched my dad fight building a mustang harness and fuse/relay panel for years before he finally got to crank the engine he'd paid a LOT of money for 7 years prior. I was given an Explorer engine and went the JY to get a harness. If you mount the PCM at the top center of the firewall using an 06ish Escape PCM box, the only harness work that really needs to be done is on the part that supplies power. Even the transmission harness drops out before that. It's a sweet package deal.
As far as intakes, I think the explorer intake flows better than the mustang stuff and the harness already fits it.
It does.......The explorer upper and lowers are GT40 versions. The 95 intake fits under a stock hood better. The body style change in 94-95 had less hood clearance thus intake had to be shorter.
Tim
Thanks for all the replies guys! I have a 2-in body lift so I don't think I have a clearance issue.
I will begin looking for The explorer set up, harnesses and computers as well as the newer electronics.
If I can't find the parts I'll go with the 93 stuff that I already have.
I've seen a couple of posts recently on the parts offered here as well as the Facebook group I will rescan those.
JB
Sent from my Pixel 4 XL using Tapatalk
I will begin looking for The explorer set up, harnesses and computers as well as the newer electronics.
If I can't find the parts I'll go with the 93 stuff that I already have.
I've seen a couple of posts recently on the parts offered here as well as the Facebook group I will rescan those.
JB
Sent from my Pixel 4 XL using Tapatalk
- Joined
- Jun 8, 2010
- Messages
- 2,213
Also consider what you're going to do for a transmission. The Explorer PCM is the POWERTRAIN control module. It controls the entire powertrain, not just the engine (i.e., ECU/ECM, Engine Controle Unit/Module). If you ever intend to go to an overdrive, this is the time to do it. You can put the OD OFF button anywhere and click it off until you have the proper axle gearing to use it.
Great advice! I'm sticking with NP435 for now, someday I might install a five-speed. I am definitely a manual transmission person.
JB
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