'95 Vs. '94 Engine Differences

[DPDISXR4Ti]

I stumbled across a '95 Explorer at the junkyard the other day. As you probably know, unlike the Ranger, the Explorer continued on with EEC-IV in 1995. Knowing that, I sorta expected the '95 Explorer would have still gotten the AL intake and 93TM heads. While I'm not sure about the heads, it definitely had the plastic intake. Given that, I'm also now suspecting it has the 95TM heads - yes, no, maybe???

More questions now pop into my head...
Is the engine management wiring the same between the '94 and '95? I have the '94 schematic. Anyone have the '95?
I assume the '95 is still EFI and SEFI didn't happen until EEC-V in '96, correct? (49-state vehicles)

 

[410Fortune]

95’is different then 94 in many ways wiring is one of them no more big white plug

Rangers didn’t get obd2 until half way through 96 some 96 are still obd1 even though they have the obd2 port under the dash

95 has the plastic intake and the big square 42 pin wiring plug at the back of the intake, it is more like a 96 then a 94
Yes a plastic intake 4.0 has 95tm heads

I do not have the 95 wiring book I have 93 and 96 of course lol

95 is still eec-iv or obd1 yes should have test connector under the hood

 

[DPDISXR4Ti]

95’is different then 94 in many ways wiring is one of them no more big white plug

Rangers didn’t get obd2 until half way through 96 some 96 are still obd1 even though they have the obd2 port under the dash

95 has the plastic intake and the big square 42 pin wiring plug at the back of the intake, it is more like a 96 then a 94
Yes a plastic intake 4.0 has 95tm heads

I do not have the 95 wiring book I have 93 and 96 of course lol

95 is still eec-iv or obd1 yes should have test connector under the hood

I've actually got harnesses here from a '93 Ranger and a '95 Explorer, and yes, I can confirm that the harnesses are very different. But are the pin locations the same?

Are you saying that the '95 and early '96 Rangers got EEC-V but still OBD1?

Did any of the 49-state EEC-IV vehicles get SEFI? <Edit... Now looking at a '94 Explorer schematic as I type this, the answer is "yes". In fact, it would appear that all '94 Explorers got SEFI, and so I'm sure that's the case with the '95's as well.>

 

[410Fortune]

Cam synchronizer is used by the pcm to time the engine

Pin locations completely different 93-95, I mean some of the pcm wires may stay in the same spots… this is true 95-04.
The older pcm had a different connector then the 110 pin 95+ connector.
The rest of the engine and underwood wiring is completely different. 91-94’aremgen 1 trucks, 95-04 are gen ii

Otherwise 93/94’compared to 95, well 95 is more like 96 then a 94. Plastic intake and obd2
95 is still an odd duck it has many one year parts
The ohv was updated (heads, intakes, wiring) in 95 and again in 98 (clean fire heads, return-less fuel and digital sensors) then ended its run in 2000

Yes rangers remained obd1 half way through 96, Meaning I can have several 96 rangers here (and I do) and some of them will be on obd1 and others will be obd2, sometime in 96
They switched

 

[DPDISXR4Ti]

Pin locations completely different 93-95, I mean some of the pcm wires may stay in the same spots… this is true 95-04.
The older pcm had a different connector then the 110 pin 95+ connector.

Otherwise 93/94’compared to 95, well 95 is more like 96 then a 94. Plastic intake and obd2
95 is still an odd duck it has many one year parts

Hah, we were typing at the same time!

Are you momentarily forgetting that the '95 Explorer is still EEC-IV? The '95 harness and OWE2 PCM I have here confirm that.

 

[410Fortune]

Yes! 95 looks a lot like a 96 doesn’t it? Even though the electrics are still eeciv, as I said, 95 is a lot closer to a 96 then a 94
Ifs vs ttb has had much to do with that change, the shape of the oil pan and exhaust components differ from the earlier ttb trucks
All fords 96-01 have the 42 pin c110/12/c115 big square connector that connects drivetrain to truck, the 91-94 did not have this
The wiring circuits in that connector try to stay in the same locations but ford did some strange things, even mid year.


I don’t mess with a lot of 95s because there just were not as many of them and they didn’t have the v8
I’ve only owned maybe two 95s
I have fixed many of them
They are tough! The 95’with its ohv and 4r55e auto they seem to reach 250-300k miles on a regular
There is one 95 Eddie in particular that reached 472k miles and was still passing Colorado emissions. We had replaced the transmission once. The valvetrain was noisy… but she still runs

 

[Josh P]

95 was a one off, ******* year. Ford started to migrate to obd2 but retained the obd1 ecm.

 

[DPDISXR4Ti]

Yes! 95 looks a lot like a 96 doesn’t it?

Just opened these four up. L to R it's '95 Ranger EEC-V, '95 Explorer EEC-IV AT, '94 Explorer EEC-IV AT, '95 Explorer EEC-IV MT

The only two that match are the two on the right. Circuit boards are identical - just a different EPROM.

Keep in mind, there were (at least) two different manufacturers, so that accounts for some of what we're seeing here. The two on the left are from one manufacturer, and the two on the right are from another.

Looking at the '94 Explorer schematic I have here, it's SEFI with no EFI option. Indeed lots of pin locations moved around, and obviously some added vs. the earlier vehicles. For now, I'm thinking that '94 and '95 are similar electrically, with just a different calibration to account for the different heads.