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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Where's the computer?

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Old Jan 16, 2006 | 10:52 PM
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Unhappy Where's the computer?

My son's '85 302 EFI died on us and will not restart. We did an KOEO test and got a Code 18 but that may not be a valid reading since the engine was cold. We want to change out the engine computer with one we know is good, but can't find its location. Can anyone steer us in the right direction? Any ideas on the Code 18 would also be appreciated. Thanks.
 
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Old Jan 17, 2006 | 07:00 AM
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Old Jan 17, 2006 | 09:35 AM
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fordfuelinjection.com Ryan has alot of info posted on that site will all the codes and their meaings and how to fix/troubleshoot problems with the EFI system
 
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Old Jan 17, 2006 | 09:37 AM
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I found it...the computer is located under the dash to the right of the steering column in case anyone else is looking for it.
 
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Old Jan 17, 2006 | 10:09 AM
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Thanks, 74F250. That site is where I found out where the computer is located. Code 18 indicates Loss of tachometer input/IDM circuit failure/SPOUT circuit grounded. I still don't know what to do about it, but I am trying to track it down. I am not sure if the code is valid or not, since I can't run the engine to get it up to operating temperature. I long for the good old days when a guy could keep his Ford running with a dime and a screwdriver.
 
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Old Jan 17, 2006 | 04:54 PM
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Sounds like the coil went bad thats where i would start
 
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