E40D Overdrive help

[icanfixall]

Ok... stupid question... What and where is the TECA. I'm not familiar with that part.

The teca is a rally. On my 89 truck it is found near the coolant recovery tank. It is a square electrical box about 1 inch square. Just goggle it or look for the testing methods of utube. They really helped me figure out why my tach quit working and why my trans was in limp home mode. As I posted already. I ran a jumper hot wire directly from the passenger side battery to power this teca. Once you find the wire feeding power to this relay just a simple jumper wire tells you if the relay is ruined or its not getting power thru the harness fuseable links.

 

[FORDF250HDXLT]

Gary, your very,very close. the TECA stands for Transmission Electronic Control Assembly.AKA trans control unit,the brain,trans controller.the actual little box that does the controlling.
the trans control relay is just the switch that powers her up.

oh,it's location is easy to find too (easy to get to in the 8th gens,as it slides out from inside the cab/difficult to remove in the 9th gen as it is removed from under the hood) as it's right down on the firewall.near the drivers side hood hinge.just to the side and downward of the brake booster.
you'll see the large connector on it held on with the 10mm bolt in the center.

 

[Plowmaster]

I threw a new relay in mine today. It did not help the starting in third problem, however the old relay was bad, when it switched, it only dumped out 11 volts...so just because it's switching, does not nessasarily mean it's giving full voltage. I guess next step is test resistance to the tranny.

I just wish I could remember the simple "fix" I did when it started acting like this after I changed out the pot metal ignition lever in the steering column. It was simple and quick so I didn't take note of it....sheesh

 

[Plowmaster]

What years are those generations you speak of?

 

[snicklas]

What years are those generations you speak of?

8th gen (87-91), or we call them on here, Bricknose:

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9th gen (92-97 (94.5 was the end of the IDI)), or as we call them on here, OBS: (Old Body Style, Original Body Style)

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7th gen (80-86 (83-86 the only IDI years)), which didn't have an E4OD as an option, or as we call them on here, Bullnose or Slantnose:

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[FORDF250HDXLT]

I threw a new relay in mine today. It did not help the starting in third problem, however the old relay was bad, when it switched, it only dumped out 11 volts...so just because it's switching, does not nessasarily mean it's giving full voltage. I guess next step is test resistance to the tranny.

I just wish I could remember the simple "fix" I did when it started acting like this after I changed out the pot metal ignition lever in the steering column. It was simple and quick so I didn't take note of it....sheesh

maybe the pins are corroded or you have the same issue Gary did with a bad fuseable link.

 

[Plowmaster]

the links by pssenger batt?

 

[Plowmaster]

Still having the same prob. I've got power on each side of all fuse links, od switch is working correctly. Cleaned transmission connection and have a new relay with good clean connections. Speedo n tach working. Anything else to check? I'll be chasing wires from the relay to the transmission today to check for continuity. Thinking it may be internal solenoids. I've done everything I can without a meter. Thanks

 

[FORDF250HDXLT]

so your od light is no longer glowing dimly,however you still have high gear in D position?

if this is the case,the suspect the connection at the bulkhead connector.
http://www.oilburners.net/forums/sh...nce-Of-A-Clean-Trans-Harness-Code-62-amp-More

 

[Plowmaster]

Boy do i ever appreciate the help. I've been right thru that connection, but I'll get in there and check it again. Is a no flashing od light indicative of no codes? If I'm having problems with my tranny....WHY am I not getting an od flash? Kinda one of them rare times you want a check light to come on eh? Thanks again, I'm hoping to get to it today or Monday, got an ip to pull off a 5.9 first, tractors always come first.

 

[OLDBULL8]

Have you checked the connection on the pass side of trans itself? There should be a shield there to keep the heat from the exhaust from melting the wires. If you remove it, don't pry it, squeeze the locking tab and pull up with the wires.

 

[Plowmaster]

I got in there earlier and cleaned it up, one of the first things I did. I flushed it till cleaner ran clean, blew it dry, twice, then greased it....however I did not visually inspect my work. I'll be getting down in there again hopefully Monday and put my eyeballs on it

 

[Plowmaster]

....and yes, od light seems to be working correctly, and still starting in third. Thanks

 

[trackspeeder]

....and yes, od light seems to be working correctly, and still starting in third. Thanks

There could be an issue in the accumulator body. Stuck D2 valve.

 

[Plowmaster]

It will move trough gears manually though