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Power Strokes 1994-1997 General Technical discussion of topics related to vehicles powered by the Power Stroke engine in 1994 through 1997 models.

 
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post #1 of 6 (permalink) Old 09-10-2019, 09:17 PM Thread Starter
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Code readers

Hello,

Just wondering what the consensus is on code readers that will actually pull codes from our odb1 trucks. I have tried several over the years and have never been able to successfully pull a code on one of these trucks, even when they have, or have had check engine lights. The last one I tried was a innova 3145 Ford ODB1 scanner, and I didn’t have any luck.
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post #2 of 6 (permalink) Old 09-10-2019, 09:31 PM
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Probably because they are not OBDI! They are more OBDII, but not quite. Any scanner must also be able to read the Ford Enhanced parameter set. You can use the FORScan app and a OBDII adapter (Bluetooth or I guess hardwired). Hopefully someone that has used it will chime in with a good adapter to use. 94.5 PSDs would have used the underhood diagnostic port, but most have probably been reflashed over all these years to activate the underdash OBDII Port (the later OBS PSDs used the OBDII Port). Cheers!

97 F250 SC 4x4 (CA model), E4OD, 4.10 LS,
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post #3 of 6 (permalink) Old 09-11-2019, 03:50 AM
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I recently started using the FORScan Lite app on my iPad, which is free, with a $15 WiFi code reader from Amazon, and it reads most of the parameters in my 97 F250 PSD, it can read while cranking, while driving or at idle, as long as the key is ON even with the engine OFF, and it gives you the option of seeing the values in gauges, graph, or a table with the descriptions of the sensors chosen and the current reading beside it. I have found the graph is the most useful because the gauges and the table’s values change quickly and once you see them, they’re gone. The graph has the value on the vertical axis, against time on the horizontal axis, and it moves the graph from left to right and keeps the reading of maybe 20-30 seconds at a time, and if you save the data file, it may save indefinite time. I took my iPad and saved a trip of over an hour, without turning off the engine of course, because if you do, at that point the iPad looses the connection. I will try to include a picture how it looks when I accelerated quickly from about 60 to 75 mph.
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post #4 of 6 (permalink) Old 09-11-2019, 04:17 AM
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The first and second graphs on the left column are the ICP and the IPR reading, and the the sixth is RPM,
While the fifth one down on the right is Manifold Absolute Pressure, which is the turbo Boost.
The step you see in the middle of the graph is because I accelerated while the readings were holding steady, form about 60 mph at about 2000 RPM, and 1350 psi on the ICP, and about 24% on the IPR, and 16.7 psi boost, to the readings you see in the picture, 2487 RPM, 35.16% IPR, 2462 psi on the ICP, and 24.1 psi boost.
This was the file that I saved of over an hour driving, which I reloaded fro review and then took screen shots.
How this helps you

Patrick, I am going to post more pictures on my previous thread with a question I have.
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post #5 of 6 (permalink) Old 09-12-2019, 10:02 PM Thread Starter
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Quote:
Originally Posted by tx4wheeler71 View Post
Hello,

Just wondering what the consensus is on code readers that will actually pull codes from our odb1 trucks. I have tried several over the years and have never been able to successfully pull a code on one of these trucks, even when they have, or have had check engine lights. The last one I tried was a innova 3145 Ford ODB1 scanner, and I didn’t have any luck.
Mine is a 94.5 with the underhood connector. I have an odbII scanner, whips I know won’t work. But the other one was specifically for odbI and it didn’t work either
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post #6 of 6 (permalink) Old 09-16-2019, 12:25 PM
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Maybe you missed my previous post? Yes, your 94.5 has an underhood diagnostic port. Many 94.5's have had their PCMs reflashed to enable the underdash diagnostic port (and thus would render the OBDI port under the hood useless). My 94.5 was one of these that had been reflashed to an ALF4 program and I could read codes, perform KOEO tests and record data with my laptop and scanning software through the OBDII port. Cheers!

97 F250 SC 4x4 (CA model), E4OD, 4.10 LS,
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