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Old 05-23-2012, 03:39 PM
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99 powerstoke problem

I have early 99 powerstroke that is all stock. When it rains he engine will shut down for a split second and come right back on, kinda like a miss but you can tell its a complete loss of electrical power. After it does it 3 or 4 times the service engine light comes on, Will go off when you cycle the key. I know its got to be something getting wet but I don't know what it is. It was raining today so when the SES light came on I ran it by my buddies shop hooked the computer to it and got the codes: 603 (internal control module kam error) Code: 344 (cam position sensor intermitted) Code: 541 (Intake air heater A circuit low). I cleared the codes and did KOER test and codes came back but with no SES light. I left and on my way home the truck lost all power, barely ran with lots of smoke then died. Pulled over and restarted with lots of smoke (white colored) for a second and cleared out and ran fine. Again, only acts up when it rains, runs perfect otherwise. Does anyone have any ideas?
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Old 05-23-2012, 03:44 PM


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Replace your cam position sensor and start from there. It could be an idm or a ecu problem, but start with the came sensor first

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