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Old 08-26-2014, 11:25 AM
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97 F250 Check engine light and flashing Over drive light

I recently purchased a 97 F250 7.3L turbo diesel 2WD Dually Automatic with 160K, I am getting Check engine light with flashing OD light with let of the gas panel to stop a light and they go out when I step on the gas. but it does not happen all the time. When by a local diesel truck shop and ask them what it could be, there answer was you need a transmission and we do it for $4500.

Is there something I can check, change before jumping on replacing the transmission.

Fluid levels are good.

Thanks
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Old 08-26-2014, 11:30 AM
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Originally Posted by Mi-Cyn View Post
I recently purchased a 97 F250 7.3L turbo diesel 2WD Dually Automatic with 160K, I am getting Check engine light with flashing OD light with let of the gas panel to stop a light and they go out when I step on the gas. but it does not happen all the time. When by a local diesel truck shop and ask them what it could be, there answer was you need a transmission and we do it for $4500.

Is there something I can check, change before jumping on replacing the transmission.

Fluid levels are good.

Thanks
If the OD light is flashing and the CEL is on it has codes thrown. You need to know what those codes are and these guys will be able to help you.
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Old 08-26-2014, 12:02 PM
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If the OD light is flashing and the CEL is on it has codes thrown. You need to know what those codes are and these guys will be able to help you.
Exactly what Todd said. how's the trans shifting? Does it feel normal? I have had this happen to me, but it was IVS and TPS related when I checked the codes. You may not need a new trans at all. You need to get the codes checked before you do anything.
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Old 08-26-2014, 12:21 PM
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Thanks, I will go back and have the codes read, the guy that does it was not their that day, the shop owner is the one that said it was the transmission.
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Old 08-26-2014, 12:24 PM
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Thanks, I will go back and have the codes read, the guy that does it was not their that day, the shop owner is the one that said it was the transmission.
I wouldn't trust them or him if that was his first "off the cuff" response. I'd move on and try to find someone that knows these trucks.
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Old 08-26-2014, 12:29 PM
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If the lights are coming on and off with the movement of the gas pedal then I'd say yiu have a short somewhere
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Old 08-26-2014, 12:35 PM
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Forgot to mention, it does shift hard after the CEL and OD light comes on if I accelerate to fast, but most of the time it shift normal, and on occasion it seems to shift to fast.

This is my first diesel, I have all ways had an f150 never had issue like this.

I did find that the third tail light was burnt out, replace the bulb and found that the plug was burnt, replacing it this weekend.

Thanks for the help.
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Old 09-22-2014, 07:41 AM
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Finally got my F250 in to have code read, they found no codes but they did find that the gas pedal was not reading correct, was reading 9% with nobody touching it and to the floor it was only reading 68% pedal movement. They suggested replacing the pedal assembly. found one at a local junk yard for $45, installed it, truck run great no CEL or OD light. The diagnostic was free.
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Old 09-22-2014, 09:43 AM
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Originally Posted by Mi-Cyn View Post
Finally got my F250 in to have code read, they found no codes but they did find that the gas pedal was not reading correct, was reading 9% with nobody touching it and to the floor it was only reading 68% pedal movement. They suggested replacing the pedal assembly. found one at a local junk yard for $45, installed it, truck run great no CEL or OD light. The diagnostic was free.
A lot better than a $4500 tranny. This is why it is best to read the codes if the CEL is on. Glad it was an easy fix.
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Old 09-22-2014, 08:08 PM
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Sounds like there was a short in one of the sensors on the assembly like mike said. But for what its worth i have read that some scanners read 9% even on a good working assembly.
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Old 09-24-2014, 04:50 PM
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I had the same thing happen to me a couple years back. The OD light would flash and it would feel like I was braking while accelerating...it would lose a couple hundred RPM when doing this. The only code I got was saying I had a short in a wiring harness, after running the harness and finding nothing wrong I pulled the tranny pan off. It turned out to be the solenoid block, you can pull the block off easily with out pulling anything else apart but for the gasket you have to cut the full gasket down to just the solenoid block side. It ended the problem for good....
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Old 09-24-2014, 04:50 PM
 
 
 
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