Explorer EFI Mass Buy Feeler.

[ralls]

So I'm getting everything ready to do the swap. 97 Explorer engine being rebuilt, harness ready for Garry. 4r70w adapted to the dana 20. I have vintage air a/couple and am dreading removing the hose bulkhead and rerouting the hoses inside in order to mount the ecm mount. Is there anything wrong with mounting between the brake booster and the fender on the firewall. I removed the fresh air box so lots of room there. Other than having to extend wiring harness to reach

 

[EFI Guy]

If the center of the firewall doesn't work then I would try using an Escape box between the passenger side inner fender and the firewall. The harness has enough length for that. Going towards the driver's side would require lengthening every single wire.

 

[ralls]

What year escape am I looking for again.

 

[EBGeek]

Ralls - I got mine out of a 2000-something Escape. It was a breeze to remove. Make sure you have an 8mm socket with a long extension, pop a few of the plastic rivets at the base of the windshield and you're golden. It's sitting embedded in the firewall at the base of the windshield, more on the passenger side if I remember correctly.

Here's what mine looked like:

My EFI journey detailed here (disclaimer - Garry did my PCM/harness):
http://classicbroncos.com/forums/showthread.php?t=259510

 

[EFI Guy]

It looks like I'm still not getting notifications for subscribed threads.?:?

I don't know the exact year cut off for the Escape box, it is probably around 2004-2005. If the PCM in the Escape box has the single 104 pin connector like the Explorer then it will work. If it has 3 separate connectors then it's too new and won't work.

 

[DirtDonk]

Have you gone to your User CP yet and checked your "Edit Options" to see if you have that box selected? It's not one of the check-boxes (although those may matter and effect this) but the one with a multiple choice pull-down menu.
Just select "instant e-mail notifications" or whatever is says, and you should be good to go.

And double check your e-mail on file to make sure it's correct and notifications are not being misdirected.

Good luck. After all, can't have you feeling ignored!

Paul

 

[BigToe]

I'm sure this has been answered already, but I want to make sure I have everything needed to pass some more work your way. I have a 96 explorer 5.0 with engine harness and PCM. The rest of the parts i have are from a 2000 explorer, the 4r70w with harness, spare PCM, firewall harness, passenger side relay box and under dash obdII connector. Are all these components compatible with one another or what should I go out and find, I still have access to the 2000 if I need more from it.

 

[EFI Guy]

You'll want a 96 transmission harness and transmission range sensor. I'm pretty sure I have extra 96 transmission harnesses around here. There are some wire colors that will change between the engine and firewall harness, but it's nothing crazy to make it work.

 

[BigToe]

Cool, I need to get this sent out to ya. Do you need to send me a order form?

 

[DirtDonk]

And speaking of transmissions... Does changing the speedometer driven gear (to correct the mechanical speedo) effect how the trans shifts? Guessing the ECM/ECU/thingy is getting it's speed signals from the VSS, which changes it's speed with different gears.
But didn't know if the trans got it's shifting info from other things like the TPS and other sensors. Rather than by VSS only.

This speedo gear thing came up last year when a friend was trying to smog his '77 with Mustang EFI. It runs like a top, and had passed the initial inspection two years prior.
Turned out that in the meantime he'd changed speedo gears to correct the reading on the gauge, but when the smog tech put it up on the dyno and ran it up to the specified speeds on the rollers, the computer was seeing something completely different and failed it.
Made me curious about such stuff.

Thanks

Paul

 

[Viperwolf1]

And speaking of transmissions... Does changing the speedometer driven gear (to correct the mechanical speedo) effect how the trans shifts? Guessing the ECM/ECU/thingy is getting it's speed signals from the VSS, which changes it's speed with different gears.
But didn't know if the trans got it's shifting info from other things like the TPS and other sensors. Rather than by VSS only.

This speedo gear thing came up last year when a friend was trying to smog his '77 with Mustang EFI. It runs like a top, and had passed the initial inspection two years prior.
Turned out that in the meantime he'd changed speedo gears to correct the reading on the gauge, but when the smog tech put it up on the dyno and ran it up to the specified speeds on the rollers, the computer was seeing something completely different and failed it.
Made me curious about such stuff.

Thanks

Paul

The explorer ECM uses the Output Shaft Speed (OSS) from the 4R70W. This data is one thing the ECM needs to determine the shifting and is also used in the ECM to calculate speed and miles. The older mustang EFI doesn't use any speed sensors for transmission shifting (no electronic shifting back then) and that ECM doesn't calculate speed or keep track of miles.

 

[DirtDonk]

Good to know. Thanks Phil.
So it sounds like once it's tuned, it's tuned, and changing anything after the transmission (gear in the transfer case in this instance) has zero effect on what the computer sees.

But changing the final drive ratio (or putting it in low range?) will still have an effect. Not on what the computer thinks it's seeing, but on what actually happens with shift points and vehicle speed.

Paul

 

[Casey835]

It looks like I'm still not getting notifications for subscribed threads.?:?



I don't know the exact year cut off for the Escape box, it is probably around 2004-2005. If the PCM in the Escape box has the single 104 pin connector like the Explorer then it will work. If it has 3 separate connectors then it's too new and won't work.

Hey I got my box from a 02 tribute or escape, both the same


Sent from my iPad using Tapatalk

 

[EFI Guy]

Cool, I need to get this sent out to ya. Do you need to send me a order form?

Pm me your e-mail address and I'll send you the details.

The explorer ECM uses the Output Shaft Speed (OSS) from the 4R70W. This data is one thing the ECM needs to determine the shifting and is also used in the ECM to calculate speed and miles. The older mustang EFI doesn't use any speed sensors for transmission shifting (no electronic shifting back then) and that ECM doesn't calculate speed or keep track of miles.

I believe in factory form the Explorer VSS is used for TCC lockup scheduling, while the OSS is used for shift points. VSS is also used for EGR, dashpot etc... Unless it's turned off in the PCM.
The VSS in the Mustang system was used for dashpot, decel fuel shut off, EGR, etc...even fan control logic if enabled. It calculates speed, but doesn't keep track of miles.

Good to know. Thanks Phil.
So it sounds like once it's tuned, it's tuned, and changing anything after the transmission (gear in the transfer case in this instance) has zero effect on what the computer sees.

But changing the final drive ratio (or putting it in low range?) will still have an effect. Not on what the computer thinks it's seeing, but on what actually happens with shift points and vehicle speed.

Paul

Since the Explorer PCM has no input to signal low range I disable VSS so that OSS takes over all speed functions. This way it shifts at roughly the same RPM in low range as it does in high. You are correct that if you make a change like gear ratio or tire size it will throw that calculation out. I'd try it as is first, but if you don't like it you will want to send the PCM to me to have it changed. I do that for just the cost of shipping.

Hey I got my box from a 02 tribute or escape, both the same

I believe the Mariner is the same as well.

 

[BigToe]

Can't seem to find the post with the recommendations for replacement or upgraded injector plugs/connectors. They were from Windstars and certain Dodge trucks if I remember right. If anyone can point me in the right direction or repost the info I'd be very greatful. Thanks.

 

[904Bronco]

Can't seem to find the post with the recommendations for replacement or upgraded injector plugs/connectors. They were from Windstars and certain Dodge trucks if I remember right. If anyone can point me in the right direction or repost the info I'd be very greatful. Thanks.

I think I remember Garry saying Chrysler Products, V6 vans comes to mind for some reason...

 

[dukeflr]

Garry is the authority, but I've seen new sets of the mopar style on eBay too.

 

[Green_Bastard]

Can't seem to find the post with the recommendations for replacement or upgraded injector plugs/connectors. They were from Windstars and certain Dodge trucks if I remember right. If anyone can point me in the right direction or repost the info I'd be very greatful. Thanks.

I don't know if it was posted but he did discuss it in the first video on the harness rework thread. Hope that helps.


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[BigToe]

Maybe that's where I saw It. I looked through the threads and video 3 before my eye got all googly and I gave up for the night. I'll check it out again, Thanks all.

 

[EFI Guy]

At 4:15 into video 1.5 I show the Chrysler styles that will work. The Windstars are stock replacements that usually see less heat soak, but are likely to become brittle after a few years. I've had the best luck getting the better Chrysler types from Neons and PT Cruisers.

I can provide a new set of 8 of the Crysler connectors for $35. They are the center ones in the video. I'm able to get them slightly cheaper than the going E-bay rate by buying them without the pins.