Question about 1991 Ford F250

1 Answer

Transmission issues, codes included

Hi my trucks (1991 Ford F250 7.3 Diesel) od light blinks and the tranny does not shift on its own, when i put it in drive it takes off in drive it does not go through first and second gear, but if i start it low and shift to drive it is fine, i also do not have overdrive and my speedo is really loose or bouncy, im am also not sure if my abs light is one because there is no bulb in it (i just got the truck) I scanned the trucks codes today and came up with the following using a genisis scanner: KOEO ON DEMAND CODES: 22,23,56,91,92,93,94,99. KEEP ALIVE CODES: 22,56,99.

Thanks alot, Jordan

Posted by on

  • Anonymous Apr 02, 2009

    my new truck is doin the same thing. took it to shop , they put it on scanner and said it came back clean. but the tack still dont work and it still wont shift gears .someone eles checked it and said it was a bad tranny controle mod. i have $650 in parts tryin to fixit now realy dont want to send $480 more and it not fix it ether

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 3 Answers

Check to see if the wire is lose tran sender

Posted on Dec 27, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I got a 2002 ford explorer XLT OD light is blinking the transmission shifting good and comes on after 50 but when turn off The truck and turn it back on light goes off what could be the problem


The light is blinking because the transmission control module (TCM) has detected a fault in the transmission operation. Have the dealer read the fault code that was set when the light came on. Then they can diagnose the problem that caused the issue.

Mar 15, 2016 | Ford Cars & Trucks

1 Answer

The Transmission shifts very hard after the first shift. Check engine light is on as well as the Green overdrive light blinks off and on. Speed sensor was cleaned and even replaced.


Your on the right track. Have you scanned the PCM, what codes did you get? If not and you changed the vehicle speed sensor,(VSS) did you check the (OSS) output shaft speed sensor, it will cause torque converter lock up and hard shifting and that pesky OD light flashing. I have also found that clutch packs inside auto tranny's dry out. Ford and some aftermarket companies sell a fluid that will recondition the clutch packs.

Mar 10, 2015 | 1997 Ford Thunderbird LX

1 Answer

Ford ranger transmission wont shift on its own and overdrive light is flashing


The OD light is flashing to indicate a fault is set in the Transmission control module. Have the system scanned to see what that code is. Based on my experience with this model the transmission will need to be rebuilt ior replaced with a factory rebuilt unit.

Mar 20, 2014 | Cars & Trucks

2 Answers

I have a 1991 ford f 250 diesel with a4od transmission the problem is my tachometer stopped working and the light on the od button came on this interfers with transmission shifting it will not take off in...


check to see if the computer is getting proper voltage on the yellow wire if that is not it ckeck the large red wiresmy dads truck had this problem last year the yellow wire was defective in the harnes the tack and the transmission work off the computer trust me it is a simple fix run a new wire from the solinoid on the pasenger side to the computer relay on the driverside and replace the relay too

May 30, 2010 | 1991 Ford F250

1 Answer

1999 F-350 super nduty 4wd wont shift into reverse and the od light is flashing on and off and won't shift into od.


sounds like you've got the a4Od blues save up your money your gonna need some tranny work done soon

the od lite blinking is an indication that the transmission has a fault code find a scan tool and retrieve it so you have an idea of what's wrong and an estimate of what it's gonna cost to fix it

Oct 04, 2009 | 1994 Ford F350 Crew Cab

1 Answer

Od light blinking and tranmission shifting hard


this is the first sign your tranny is shot or try changing the filter if your tranny filter is clogged it will act the same as you are saying

Jun 02, 2009 | 1997 Ford Contour

1 Answer

Transmission trouble on 2002 Ford E-450 Super Duty


Hi, this is a defective OD shift solenoid that is located inside the trans pan. you will have to drop this pan in order to extract it for replacement. this solenoid, if damaged, cant initiate the shift sequence required for the OD to engage during operational procedures.

Simply replacing this solenoid will fix this issue.

NOw, concerning the erratic shifts. this is isolated within the transmission control module. it seems to be malfunctioning. you will need to replace this module as well.

May 21, 2009 | 2002 Ford Econoline Cutaway

1 Answer

I have a 1997 ford expedition and the overdrive light stays on when its actually off is this normal and is it good for the overdrive to be on what should i do


Hi, this light is signaling a malfunction within the OD shift solenoid that is located within the transmission. the best action here is to take it to the local ford dealer for a PCM scan. you should receive a code that will point to a transmission OD shift solenoid issue.

Please rate and god bless:)

May 12, 2009 | 1998 Ford Expedition

Not finding what you are looking for?
1991 Ford F250 Logo

Related Topics:

373 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Fordexpert

Level 3 Expert

5331 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...