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Old 07-04-2011, 11:49 PM
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ECM Location on a 99 F350

I've purchased my first F350 PSD and I'm adding some stuff to it. One of the things I'm adding needs to tap into a couple of wires going to the ECM, but I don't have any idea where the ECM is located on my truck. It's an early 99 model F350 with a 7.3 L diesel. I've already added a chip to the PCM, but there seems to be some confusion about what a PCM and an ECM is on another forum. To be frank, I have no idea, but I suspect they're different. Could they be combined? I don't see how.
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Old 07-04-2011, 11:57 PM
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Originally Posted by BuddhaKat View Post
I've purchased my first F350 PSD and I'm adding some stuff to it. One of the things I'm adding needs to tap into a couple of wires going to the ECM, but I don't have any idea where the ECM is located on my truck. It's an early 99 model F350 with a 7.3 L diesel. I've already added a chip to the PCM, but there seems to be some confusion about what a PCM and an ECM is on another forum. To be frank, I have no idea, but I suspect they're different. Could they be combined? I don't see how.
They're the same thing. You have 3 major Modules: PCM(or ECM), IDM, and GEM. What are you tapping into? Be extremely careful as to not fry ANY of the above. Very expensive "whoops".
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Old 07-05-2011, 12:25 AM
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It's for a BD TorqLoc and exhaust brake. Unfortunately, with all the little production changes that go on, it's hard for an aftermarket supplier to put out a set of instructions that fit each truck exactly. Unfortunately for me, it gets a little confusing.
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Old 07-05-2011, 12:38 AM
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Look at page 9 here.

http://www.dieselperformance.com/pro...5_Torqloc4.pdf

It tells you that what you need on your truck is on the PCM. Some other makes (in this case Dodge) calls it an ECM.
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Old 07-05-2011, 04:01 PM
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PCM is (I believe) Powertrain Control Module - which includes Engine (ECM) and Transmission brains.
In the gassers, the PCM is between your left foot and the parking brake pedal mechanism.
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Old 07-05-2011, 04:08 PM
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Originally Posted by mwsF250 View Post
PCM is (I believe) Powertrain Control Module - which includes Engine (ECM) and Transmission brains.
In the gassers, the PCM is between your left foot and the parking brake pedal mechanism.
Same place on the diesels.
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Old 07-05-2011, 04:24 PM
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Excellent, thank you. I was thrown off because in the instructions for the TorqLoc it says to splice intp a couple of wires in the ECM. I called Cam at BD and he confirmed that there's no ECM on my truck.

I don't want to even think about the time I spent researching this over the weekend. Hours looking for an answer when I could have been flippin burgers on the barbie.
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Old 07-05-2011, 04:24 PM
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