96 ford powerstroke
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96 ford powerstroke
Ok I have a 96 ford crew cab 7.3. I was driving home and it started running really rough and lost all power. My brother the next day ran a scanner on it. The scanner pulled code p1280. We changed that part which was the icp. It still wasn't running right now it's pulling code p0603. Which is the pcm. Does this mean the pcm is out or the relay for it? Where is the relay located at?
Lead Driver
Joined: Oct 2003
Posts: 8,476
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From: Madison, WI
PCM is the powertrain control module. The relay is in the underhood fuse box. It's indicated in the owner's manual.
But generally, a part referenced in the description for a code does NOT mean that the part should be replaced. Each code has a troubleshooting procedure that may or may not lead to the replacement of the referenced part. In this case, a P0603 is simply a KAM (keep-alive memory) code, which means that the PCM has recently lost its keep-alive memory. This memory is "kept alive" by its connection to the batteries. So the PCM will throw a P0603 whenever the batteries are disconnected. It doesn't indicate anything wrong, unless you haven't actually disconnected the batteries.
But generally, a part referenced in the description for a code does NOT mean that the part should be replaced. Each code has a troubleshooting procedure that may or may not lead to the replacement of the referenced part. In this case, a P0603 is simply a KAM (keep-alive memory) code, which means that the PCM has recently lost its keep-alive memory. This memory is "kept alive" by its connection to the batteries. So the PCM will throw a P0603 whenever the batteries are disconnected. It doesn't indicate anything wrong, unless you haven't actually disconnected the batteries.
Logistics Pro
Joined: Oct 2008
Posts: 4,818
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From: Avilla, IN
It sounds to me like you pcm and pcm relay are probably just fine.
I'd start by replacing the CPS (Ford or IH only). If that doesn't fix the problem, that's ok. You should carry a spare in the glove box.
Then, remove the fuel filter, replace it and clean the FPR screen.
Inspect the wiring harnesses at the valve cover gaskets. Look for burnt pins and/or melted plastic.
Next, remove the idm and shake it listening for water.
I'd start by replacing the CPS (Ford or IH only). If that doesn't fix the problem, that's ok. You should carry a spare in the glove box.
Then, remove the fuel filter, replace it and clean the FPR screen.
Inspect the wiring harnesses at the valve cover gaskets. Look for burnt pins and/or melted plastic.
Next, remove the idm and shake it listening for water.
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
Camshaft Position Sensor. They are a common problem, but thankfully they are cheap.
Search cleaning the FPR screen. Its inside the little hole near the top-driver's-side of the inside of the fuel bowl.
Search cleaning the FPR screen. Its inside the little hole near the top-driver's-side of the inside of the fuel bowl.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
You can use a tire pressure gauge if you don't mind filling it with diesel fuel. Although you might actually need to take a reading under load to get a better feel for what's going on. A tire pressure gauge doesn't work so well in that case, but checking the pressure at idle, then cleaning the FPR screen and checking pressure again is a good start.
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You can use a tire pressure gauge if you don't mind filling it with diesel fuel. Although you might actually need to take a reading under load to get a better feel for what's going on. A tire pressure gauge doesn't work so well in that case, but checking the pressure at idle, then cleaning the FPR screen and checking pressure again is a good start.