Overdrive Issue

[cateringroadie86]

My overdrive button has shorted out and I need a new one. Any clue where I can find one for a decent price? Aamco handles all my transmission issues, they rebuilt it 2 years ago. They said it will be $179 to replace the OEM button on the dash which controls my overdrive... Help anyone?

 

[miesk5]

yo

1That is a tuff $$$ to swallow for a switch that is able in most yards; look for any pre- 92 F Series or Bronco (89-91; some still had da AOD, so ask) w/an E4OD and pull it out; From my 96's wiring diagrams (sw is on shift lever for 92-96 Years)

I use this yard search

http://www.mypartshop.com

Select Ford Truck

Dash Panel;

did a quickie for ya;

TFORD150 Dash Panel

0 OH0027

66182 0.0 Call 30 Call *** Auto Salvage

252-236-4127

800-437-2456

*** Auto Salvage

Jaime or Jimmy

252-236-4127

800-437-2456

P.O.Box 70

Elm City NC 27822

91

TFORD150 Dash Panel

0 OE0028

4777 0.0 Call 30 Call *** Auto Salvage

252-236-4127

800-437-2456

*** Auto Salvage

Jaime or Jimmy

252-236-4127

800-437-2456

P.O.Box 70

Elm City NC 27822

91

TFORD150 Dash Panel

0 OE0028

4854 0.0 Call 30 Call *** Auto Salvage

252-236-4127

800-437-2456

*** Auto Salvage

Jaime or Jimmy

252-236-4127

800-437-2456

P.O.Box 70

Elm City NC 27822

89

TFORD150 Dash Panel

0 JDK144

77540 0.0 Call 34 Call D and K Motors

910-892-6070

800-322-1223

D and K Motors

Darrel

910-892-6070

800-322-1223

6830 US 421 N

Clinton NC 28328

91

TFORD150 Dash Panel

NICE RED 0 TLL156

54014 0.0 Call 34 Call D and K Motors

910-892-6070

800-322-1223

D and K Motors

Darrel

910-892-6070

800-322-1223

6830 US 421 N

Clinton NC 28328

GL!

 

[Devil Dog08]

My overdrive button has shorted out and I need a new one. Any clue where I can find one for a decent price? Aamco handles all my transmission issues, they rebuilt it 2 years ago. They said it will be $179 to replace the OEM button on the dash which controls my overdrive... Help anyone?

i never liked aamco i thought they were always overpriced. i had automatic hubs and wanted to change to manual warn hubs i already had the new warns.and i really didnt know how to do the job so i went there and he quoted me 600 bucks just for the install. the next day i did the job myself with the help of the great peeps on here it took about 45 minutes.and now i know how to do it .bottom line go to a junkyard get the part and with the help of all the great people on broncozone you will do the job yourself save a ton of money and have the great feeling of accomplishment.......good luck my friend

 

[cateringroadie86]

Well, I found a button for 100 bucks from a dealership in FL... no junk yard around me had one. The new button didn't fix the problem, so I guess the old one was fine. AAMCO is now trying to say that I need a new ECM to fix the problem. I don't trust AAMCO period, even though they did do a good job rebuilding my transmission three years ago now.... haven't had any problem except for this overdrive issue...

Dose the ECM even control the transmission on old 1990 Broncos?

Could it be that my torque converter has gone bad and that is whats causing my overdrive to malfunction?

 

[miesk5]

Was away;

Check fluid level and condition

Check it for trouble codes first; here is a Self Testby our PAL, BroncoJoe19

do the KOEO = Key On Engine Off portion first &

Remember to have engine @ Normal Operating Temperature before doing the KEY ON ENGINE RUNNING (KOER) portion

I run it to heat it to norm op temps then do the KOEO p[portion first

Have all accessories and lights off.

Post and codes found here.

And post what issues you are having with it..

Does it kump in and out of OD?

re: "...Dose the ECM even control the transmission on old 1990 Broncos?..."

Yes the ECM (also ref to as da EEC/PCM/Computer) does control the E4OD.

And a flashing OD light is an indication of a transmission related trouble code in the Powertrain Control Module (PCM). When it has a trouble code related to the transmission it usually commands full line pressure to try to protect the transmission from damage. Normally this is caused by a transmission slip code. Have your computer scanned to see what transmission codes are stored. If it is a torque converter slip code keep in mind it could be stored from converter clutch slippage, or slippage in another transmission clutch pack.

And a bad manual lever position sensor (MLPS) cpould cause it to slip out of OD. The MLPS is ref to as da transmission range sensor (TRS). The problems are related to water intrusion from a poor connector seal. Parts stores sell an update kit that comes with a new connector & improved seal