Possible PCM removal? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 18 (permalink) Old 10-20-2011, 12:54 PM Thread Starter
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Possible PCM removal?

So i just ordered a Phoenix 6 position from PHP and was reading some about cleaning the terminal on the pcm before installing the chip. I read that some people actually took it out to clean it. Is taking the PCM out a pain? and is it worth doing to get into the terminals better?

97 7.3
PHP Phoenix
IDM mod
AFE Big Boost
06 SD rear springs
Bilstein 5100s
3" MBRP downpipe
4 inch lift
Glowshift gauges- trans temp, boost, egt

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post #2 of 18 (permalink) Old 10-20-2011, 01:12 PM
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Re: Possible PCM removal?

YES. remove it thru the drivers fender well. This way you can see what you are doing as not to take the gold plating of the terminals, or not clean enough

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post #3 of 18 (permalink) Old 10-20-2011, 01:14 PM
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Re: Possible PCM removal?

I removed mine to clean it. From what I have seen some problems with a chip stem from the terminals not being clean enough.
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post #4 of 18 (permalink) Old 10-20-2011, 01:46 PM
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Re: Possible PCM removal?

Mine was a pain in the ass to remove, it has to come out the fender well area. I used a big crow bar to push down the plastic wheel well to gain enough clearance.
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post #5 of 18 (permalink) Old 10-20-2011, 08:45 PM
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Re: Possible PCM removal?

It's pretty easy to remove. Take out some of the screws in the rear of the wheel well, then pull it down as far as you can to make room to slide out the PCM. It will be 100 times easier to clean the terminals properly if you take it out.

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post #6 of 18 (permalink) Old 10-21-2011, 04:57 PM
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Re: Possible PCM removal?

Once out I split the case and took a very sharp small screw driver and carefully remove the waxy/plastic coating from each terminal of the chip interface be careful not to remove any tin off the terminal connectors. I also removed the waxy keerap layer that is between the tin connectors. Once done reassemble install chip into socket and duct tape to ensure it will not vibrate lose. Took me about an hour to completely clean interface socket.

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post #7 of 18 (permalink) Old 10-21-2011, 05:40 PM Thread Starter
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Re: Possible PCM removal?

Cool guys thanks! Much appreciated!

97 7.3
PHP Phoenix
IDM mod
AFE Big Boost
06 SD rear springs
Bilstein 5100s
3" MBRP downpipe
4 inch lift
Glowshift gauges- trans temp, boost, egt

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post #8 of 18 (permalink) Old 10-21-2011, 07:57 PM
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Re: Possible PCM removal?

If you can solder good or know someone who can, I would get them to build the contacts up a little bit. When I did mine I scraped it down a little too much so I just went ahead and scraped it somemore and then had my buddy solder the contacts and the chip fits on there really tight.

-John-
1996 F-250 Ext Cab Long Bed 4x4 w/ a few mods
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post #9 of 18 (permalink) Old 10-21-2011, 09:33 PM
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Re: Possible PCM removal?

Put a length of broomstick from the bottom of the hood hinge to the plastic wheelwell, lower the hood carefully until the wheelwell dents enough to allow the PCM to be removed. (It pops back when pressure is removed). My screws would not come out, so I had to do the stick trick.

Just have to disconnect the plug and remove the rubber retaining ring to remove the PCM. Drop the parking brake assembly to access the socket for the chip from inside the cab. Scotchbrite pad will gently remove the coating on the tinned surfaces. Just don't remove any tin/coating beyond what it takes to make it shiny.
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post #10 of 18 (permalink) Old 10-22-2011, 07:05 PM Thread Starter
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Re: Possible PCM removal?

thanks for the hint/tricks. well see how they work when the chip comes. i cant wait!

97 7.3
PHP Phoenix
IDM mod
AFE Big Boost
06 SD rear springs
Bilstein 5100s
3" MBRP downpipe
4 inch lift
Glowshift gauges- trans temp, boost, egt

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