BAD PCM?
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BAD PCM?
02 F250 w/ 7.3 4x4 automatic trans 167k
Trying to chase down a new problem.
Truck idles for about 5 minutes then dies. Driving down the road it has started to erratically shift between 3-4th gears. I ran FORSCAN and found the following codes.
p0476,c1284,p0284,p1536,p0220,p1780,p0565,66,67,68 and 69,p0571,p0703.
Can the PCM be going out and all these coded are just a by-product of different circuits not being able to talk to each other?
Forscan says my trucks PCMs part number is 2C3FDE but my units actually says it is 2c3f-12A650-DE.
I would hate to buy a new one if this one can either be reset or reprogrammed.
Thanks-Bombguy
Trying to chase down a new problem.
Truck idles for about 5 minutes then dies. Driving down the road it has started to erratically shift between 3-4th gears. I ran FORSCAN and found the following codes.
p0476,c1284,p0284,p1536,p0220,p1780,p0565,66,67,68 and 69,p0571,p0703.
Can the PCM be going out and all these coded are just a by-product of different circuits not being able to talk to each other?
Forscan says my trucks PCMs part number is 2C3FDE but my units actually says it is 2c3f-12A650-DE.
I would hate to buy a new one if this one can either be reset or reprogrammed.
Thanks-Bombguy
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
Your reasoning doesn’t make a sense to me, I think you just have a cruise control issue as well as a back pressure issue like a clogged tube to the sensor. Fix the codes and your running issue and pcm concern should be resolved.
but if you do need pcm work done there is only one place I would go.
https://www.dieseltechchatt.com/
but if you do need pcm work done there is only one place I would go.
https://www.dieseltechchatt.com/
Thread Starter
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Junior User
Joined: Jul 2016
Posts: 88
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Your reasoning doesn’t make a sense to me, I think you just have a cruise control issue as well as a back pressure issue like a clogged tube to the sensor. Fix the codes and your running issue and pcm concern should be resolved.
but if you do need pcm work done there is only one place I would go.
https://www.dieseltechchatt.com/
but if you do need pcm work done there is only one place I would go.
https://www.dieseltechchatt.com/
I did see a code for Exhaust back pressure so I will start there by cleaning out the tube and replacing the sensor.
thanks-Bombguy
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
Maybe I am just being to specific but the “diffrent circuits” do not talk to each other. The pcm has inputs and outputs and all the circuits talk to the PCM not each other.
if the pcm was not communicating with a circuit you would have PCM codes or a open/short circuit code.
if the pcm was not communicating with a circuit you would have PCM codes or a open/short circuit code.
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