Hazard Lights/E40D?
Posting Guru
Joined: Sep 2004
Posts: 1,096
Likes: 2
From: Ohio
Repeated for truth.
Another issue on old trucks with the flasher is that it would pulse trailer brakes too. But when the thrid brake light was added, but the transmission and the trailer brake enable both came from the third brake light circuit and neither pulse when the flashers are on.
Another issue on old trucks with the flasher is that it would pulse trailer brakes too. But when the thrid brake light was added, but the transmission and the trailer brake enable both came from the third brake light circuit and neither pulse when the flashers are on.
Postmaster
Joined: Nov 2006
Posts: 2,609
Likes: 0
From: somerset KY
ya, some of you may remember me having trouble with all this, in my 97. i replaced the multi-function switch, and it still did it after a while, so i just repllaed a burned out third brake light, but havent noticed it doing it lately.
New User
Joined: Jan 2016
Posts: 7
Likes: 0
Would this also effect brake lights and blinkers? mine were working fine as well as the transmission, turned on my hazards while parked, they were not on when i returned (i figured my significant other had turned them off) than the transmission started acting up later. Trailer brake seemed like it was stuck on and light would not go off
Freshman User
Joined: Apr 2016
Posts: 26
Likes: 0
Same od / 4way flasher problem and od flashing light..help
I have the od light flashing , & 4way hazard switch deactivating od when pressed while running.
Its a 94 f250 e4od 7.3 idi.(2 Unnecessary builds) I researched down to the Psom chip , which fixed the slamming shifting problem originally.
Od light still flashes and the 4way switch kicks out overdrive causing high rpm. I read about reprogramming the Psom or something for that brake voltage fix ?! How do I do that. I have an older scanner?! HaHa.
I'm recuperating from an accident and my employer of 28yrs seem to not want me anymore, I'm kinda unable and disabled .SO.....
Can I: fix this myself, operate the truck w/out causing more damage.
Truck has 230k miles +- and electric trailer brake hook Up.
I'm going to do the dielectric grease and connector cleanse thing. Most all sensors were changed as I stumbled with shift slamming issue. ANY info would be very helpful.
Thanks In advance.
Gtxx
I have found that being disabled and unemployed is a full time job. Ha"!
Its a 94 f250 e4od 7.3 idi.(2 Unnecessary builds) I researched down to the Psom chip , which fixed the slamming shifting problem originally.
Od light still flashes and the 4way switch kicks out overdrive causing high rpm. I read about reprogramming the Psom or something for that brake voltage fix ?! How do I do that. I have an older scanner?! HaHa.
I'm recuperating from an accident and my employer of 28yrs seem to not want me anymore, I'm kinda unable and disabled .SO.....
Can I: fix this myself, operate the truck w/out causing more damage.
Truck has 230k miles +- and electric trailer brake hook Up.
I'm going to do the dielectric grease and connector cleanse thing. Most all sensors were changed as I stumbled with shift slamming issue. ANY info would be very helpful.
Thanks In advance.
Gtxx
I have found that being disabled and unemployed is a full time job. Ha"!
Freshman User
Joined: Apr 2016
Posts: 26
Likes: 0
Mine is a 94 7.3 idi ,e4od,
Signals don't bother anything, I can change lanes at any speed,hwy or town traffic. But don't touch the hazard button.......warp sped rpm if you're in od . I have a trailer hookup but was there when I got the truck. Pulled a uhaul loaded with a Taurus to past Plano Texas from I 10 Louisiana w no problems a few yrs ago in the rain most of the way w/no problems. Now od light flashes ?..I ain't got a grip on this yet. I'm still lookin for a pattern.
Signals don't bother anything, I can change lanes at any speed,hwy or town traffic. But don't touch the hazard button.......warp sped rpm if you're in od . I have a trailer hookup but was there when I got the truck. Pulled a uhaul loaded with a Taurus to past Plano Texas from I 10 Louisiana w no problems a few yrs ago in the rain most of the way w/no problems. Now od light flashes ?..I ain't got a grip on this yet. I'm still lookin for a pattern.
Freshman User
Joined: Apr 2016
Posts: 26
Likes: 0
Haz lights / E4od
Are you referring to the back cab light as the third brake light?
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,657
From: SE Florida
I don't know how the 4 ways could deactivate OD. I think that's impossible. It's a known issue that the 4 ways can and will unlock the torque converter, which is what I think is really happening. There isn't a way to fix this on your truck. You'd need to get custom software in the computer to change it.
You need to read the codes to find out why the OD light is flashing. Here's one way to do it. Ford ? OBD Trouble Codes
You need to read the codes to find out why the OD light is flashing. Here's one way to do it. Ford ? OBD Trouble Codes
Freshman User
Joined: Apr 2016
Posts: 26
Likes: 0
This pre per stroke 7.3idi codes
I pulled the following codes/
26 maf out of range
23 fuel inj pump lever out of range
66 trans fluid temp grounded +290 F indicated
68 no definition available
When I drove it , after all gear shifts plus od ,I pressed the 4way switch and rpm's rose. Pressed again and back to Od. Od light still flashing. Didn't notice whn it came on but it was soon after I started truck and stayed on
26 maf out of range
23 fuel inj pump lever out of range
66 trans fluid temp grounded +290 F indicated
68 no definition available
When I drove it , after all gear shifts plus od ,I pressed the 4way switch and rpm's rose. Pressed again and back to Od. Od light still flashing. Didn't notice whn it came on but it was soon after I started truck and stayed on
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,657
From: SE Florida
I don't have any help for this one.
When you run the key on engine off test you need to hold the go pedal on the floor or you will get this code.
That's why the OD light is flashing. You most likely have the wire to the temp sender shorted to ground.
Going back to Diagnostic OBD Codes I find this definition: Electronic Transmission – Transmission Oil Temperature (TOT) sensor was overheated -Transmissions. That fits with the code 66.
Read this post again, you must have missed where I said that's normal.
YES!!!!!!!!!!!!!!!!!. Read the quoted post just above this^.
When you run the key on engine off test you need to hold the go pedal on the floor or you will get this code.
That's why the OD light is flashing. You most likely have the wire to the temp sender shorted to ground.
Going back to Diagnostic OBD Codes I find this definition: Electronic Transmission – Transmission Oil Temperature (TOT) sensor was overheated -Transmissions. That fits with the code 66.
I don't know how the 4 ways could deactivate OD. I think that's impossible. It's a known issue that the 4 ways can and will unlock the torque converter, which is what I think is really happening. There isn't a way to fix this on your truck. You'd need to get custom software in the computer to change it.