Hi Guys,

I finished making the swap of a 1995 5.8L and E4OD into my 1988 bronco 2. I am running a Atlas 2 off of the back.

I bought the complete 5.8, wiring harnesses and E4od out of a 1995 bronco, got the helms electronics manual and wired them in.

Everything starts and runs fine, but in drive the truck is slow to take off and when it does shift through the gears it shifts VERY hard (Chirps tires) and shifts way up there in the RPM band. As soon as it hits second gear for the first time, the transmission light starts blinking. (The overdrive off light)

WHat could be up? I have checked my wiring, and done tests. Everything looks fine, we are full of fluid and transmission oil temp is at 145 degrees when idling hot after 1 hour.

Any suggestions?

I have never owned an e4od before, so I don't know where to start.

I pull the computer codes and the truck says 1 1 1. All fine in engine off or engine running. The darn tranny light doesn't do anything special while checking codes, so it's not talking.

Adam

did you drive the truck it came out of? It could have been doing it before you pulled it. I would take it some where that they can plug it in and pull the tranny codes. Do you have a speed sensor hooked up?

Without having the history on the thing, almost sounds like torque converter is going south.......quick.

'95 is still fairly early in the history of this tranny (introduced in something like '89 or there abouts) and a number of improvements have been made to it. This one is early enough that it's still got a few weak points in it. I'ld have to dig around to find the info, but you can find plenty yourself on google. I've got a '92 that's starting to act up and I've been eyeing River City Transmission for a rebuild (~2K, little steep, but it's solid when they're done with it).

Originally posted by Big Tree
Without having the history on the thing, almost sounds like torque converter is going south.......quick.

'95 is still fairly early in the history of this tranny (introduced in something like '89 or there abouts) and a number of improvements have been made to it.

'95 will have just about every upgrade. The thicker converer clutch piston and new 4-pinion planetary came in '94, and a higher-displacement front pump was added in '95.

Sounds more like the transmission isn't getting a VSS signal... but you'd think it would return a code. Did you do the KOER test as well?

Actually '95 E4ODs saw significant improvements, altho I couldn't tell you what specifically. I don't think it's early for the tranny considering '97 F150s went to the 4R170??? or something like that....

Anyway dude, do you have your VSS hooked up? If not that's definitely your problem. This is the excitor ring in the diff, in '95 it was used for the rear ABS AND the Variable Speed Sensor, which, among other things, tells the E4OD when to shift.

Kurt Hartsig of 2bigbroncos did something very similar to what you just did, and initially experienced the same shifting symptoms you describe. You might try this link:
http://www.2bigbroncos.com/technical/efi_obdii_conversion/index.html

but you're probably better off to contact Kurt directly. Try 2big@2bigbroncos.org

If this is going into a Bronco II, just how long it the rear driveline??? Just curious...

Was the motor and tranny out of a CA vehicle? Some '95 CA Broncos had OBD-II, in which case an earlier model VSS will not send the correct signal. Either way you may need to run the VSS signal through a PSOM. Kurt Hartsig ended up having to mount a PSOM in his '86 because apartently it somehow cleans up the VSS signal before sending it to the EEC.

Good Luck... :rolleyes:

I have this problem w/ my Bronc every once in a while. I was told the e40d has adaptive memory in the computer to control shift points based on gear and rpm. Since mine has been rode hard it tends to forget which way to shift. Easy to tell if this is the problem is to disconnect the battery for an hour or so. This clears the memory and goes back to the original shift points. Good luck

Close. Starting in '94, the 4R70W was used behind 4.6L and some 5.0L motors. This motor continued to be used in the new-bodied F-150s behind the 4.2L V6 and the 4.6L V8. It's basically an AOD.

The 4R100 is still in use behind the 5.4L, V-10, and PSD. It is basically an E4OD.

But yeah, if you want to buy an E4OD, '95 is the year to get.

Originally posted by D60
Actually '95 E4ODs saw significant improvements, altho I couldn't tell you what specifically. I don't think it's early for the tranny considering '97 F150s went to the 4R170??? or something like that....

Aright guys. Here is some more info for you.

My VSS was NOT hooked up.

In the 1995 bronco, the VSS signal goes from the transmission to the ABS computer, which then feeds the signal to the speedometer box, which then feeds the signal to the computer.

SO, I got the dash out of the same 1995 bronco, and hooked up the speedo box and the ABS. I wired it according to the helms manual, and pressed the buttons of the dash box to make sure that the odometer module was alright. It is. Shows milage and trip milage.

I crank the motor over, put it in drive and no change.

What could be up?

For the VSS signal, I am using the VSS sensor that worked with the 1994 4.0 that was in the bronco 2 previous to the 5.8.

The sender is the little black plastic thing that hangs on the mechanical speedo cable that "nevada speedometer" made for me to hook up my atlas 2 to the computer.

I am at a loss. I have never seen that transmission light blink like that before.

Is the VSS sender incompatible with the 5.8 computer?

Just to check, I read the milage on the digital dash module that I installed from the big bronco, and drove around the block. The milage increased by .4 miles.

SO, it is getting a signal and processing it, but something is wrong because is shifts harshly, and late.

Any ideas?

Adam

Can you do a pressure check.It sounds like you have high line press.

At idle ,
P-55-65
R-75-99
N-55-65
D-55-65
2-55-65
1-75-99

Stall,
R-240-265
D-156-174
2-156-174
1-157-186

What are you pullin codes with?If the press is high and your not getting a code 624 (EPC circut failure) it could be an internal problem with the solenoid body.

I would need to bring it to the tranny shop to have them do the line pressure check.

I did just check the fluid level in the e4od, and it seems a little high. I'll pump some out and see if this makes some kind of a difference. Hmmm...

Thanks guys,

Adam