APCM troubleshooting - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 10-01-2007, 08:17 PM Thread Starter
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APCM troubleshooting

Scored myself a APCM, it is communicating with the PCM (buttons work, can set/choose an RPM and it'll rev up, charge protect will rev up the engine.) The problem I am having is when the unit is on, the LCD shows "0" for RPM, and on charge protect show ".0" for voltage. Do I need to have either the PCM or APCM reprogrammed to get this thing to work?


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1997 F250 RC/SB 2WD project
2008 F350 CC/LB 4X4 DRW Lariat, 3" cow catcher mod
2008 Ranger SC FX4
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post #2 of 3 Old 10-01-2007, 08:44 PM
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Buddy system

If you know someone with a compatible vehicle ask if you can borrow their apcm plug to see if your unit works on their truck. Or try their apcm in your truck. Easiest trouble-shoot I've ever used. ps sometimes chip mods interfere with computer ''reception''.

Last edited by spar-tool; 10-01-2007 at 08:50 PM.
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post #3 of 3 Old 10-02-2007, 12:40 PM
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Mine didn't work until i got my DP Tuner

1997 Ford F350 Crew Cab, Long Box, 7.3L Powerstroke, E40D Automatic, ATS 5 Star Converter, ATS Deep Trans Pan, DIY Intake, Straight Exhaust, 4x4, SRW, 3:55 Rear End, Cab Lights, Lighted Grab Handles, Delta Champion Low Profile Tool Box, Dee Zee Box Caps, Homemade Drill Stem Rear Bumper.
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DP Tuner F5 Stock,40,60 Tow settings
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