1994.5 can you use a scan tool or a tuner ? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 12 (permalink) Old 02-25-2018, 03:25 PM Thread Starter
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1994.5 can you use a scan tool or a tuner ?

I've been told several times that because my truck is a 1994.5 7.3 it doesn't have the software to show codes on a scan tool and won't work with a tuner ? I can't find anything about this anywhere
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post #2 of 12 (permalink) Old 02-25-2018, 03:39 PM
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Re: 1994.5 can you use a scan tool or a tuner ?

Never heard that. If its got a pcm, you should be able to tune and scan it. And yes, it has a pcm.

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post #3 of 12 (permalink) Old 02-25-2018, 03:49 PM Thread Starter
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I know it has a pcm and the hookups for a scan tool thank you
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post #4 of 12 (permalink) Old 02-25-2018, 04:04 PM
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Re: 1994.5 can you use a scan tool or a tuner ?

It's not 100%. It's been said that the '94.5s and early '95s had the connector, but weren't programmed to use it. But our trucks have been on the road so long, that if it has ever been to a dealer, it's probably been re-programmed to use the in-cab connector. Easy enough to test. A generic scanner won't read most PSD-specific data, and won't obtain trouble codes, but it should at least show speed and RPM.
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post #5 of 12 (permalink) Old 02-25-2018, 04:25 PM Thread Starter
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I'll try that a see if anything comes up
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post #6 of 12 (permalink) Old 02-26-2018, 01:42 AM
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Re: 1994.5 can you use a scan tool or a tuner ?

if its been reprogrammed would it show different?
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post #7 of 12 (permalink) Old 02-26-2018, 01:45 AM
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Re: 1994.5 can you use a scan tool or a tuner ?

Show different what? Not sure what you're asking.
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post #8 of 12 (permalink) Old 02-26-2018, 01:57 AM
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Re: 1994.5 can you use a scan tool or a tuner ?

If the PCM was reflashed by the dealer, the diagnostic port under the dash should now be active. 94's came from the factory with that port inactive (you had to do diagnostics , which were very limited, using the port located in the engine compartment). Cheers!

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post #9 of 12 (permalink) Old 02-28-2018, 04:52 PM
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Yes you can I own a 1994 f250 excb lb 7.3 psd.
And with my autoenginuity I can hookup.
You just have to change the settings
so it will work with the eec-iv. They
started using obd2 in 1995

ps if you own a autoenginuity with the
enhanced ford bundle. Give them a call
and they will explain how to make it work
thats what i did.
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post #10 of 12 (permalink) Old 02-28-2018, 05:37 PM
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Re: 1994.5 can you use a scan tool or a tuner ?

Quote:
Originally Posted by Fordeverlasting94 View Post
Yes you can I own a 1994 f250 excb lb 7.3 psd.
And with my autoenginuity I can hookup.
You just have to change the settings
so it will work with the eec-iv. They
started using obd2 in 1995

ps if you own a autoenginuity with the
enhanced ford bundle. Give them a call
and they will explain how to make it work
thats what i did.
If your PCM hasn't been flashed to wake up the OBDII port your AE is not going to work on it. Sounds like the PCM in your truck was flashed to wake it up.

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