Possible PCM Failure
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Joined: Dec 2011
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Possible PCM Failure
Vehicle is a 94 F150 5.8 L E40D 4x4
After the weather suddenly got colder the engine would randomly surge. Over night it progressively got worse.
The engine will barely idle and has a very strong rich fuel smell. I checked the timing and firing order. Checked the spark plug wires for looseness. The cap and rotor were Replace due to corrosion.
I pulled codes and received the following:
117 638 126 122 112 327 654 513 553 552 565 556.
The most worrisome is 513 indicating a PCM internal voltage fault. I doubt all these sensors have gone bad at the same time. I suspected a voltage or power supply issue but don't know where to begin.
Any ideas?
After the weather suddenly got colder the engine would randomly surge. Over night it progressively got worse.
The engine will barely idle and has a very strong rich fuel smell. I checked the timing and firing order. Checked the spark plug wires for looseness. The cap and rotor were Replace due to corrosion.
I pulled codes and received the following:
117 638 126 122 112 327 654 513 553 552 565 556.
The most worrisome is 513 indicating a PCM internal voltage fault. I doubt all these sensors have gone bad at the same time. I suspected a voltage or power supply issue but don't know where to begin.
Any ideas?
