4th cam sensor - Ford Powerstroke Diesel Forum
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Old 01-10-2009, 03:15 PM
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4th cam sensor

Early 99 PSD, manual transmission. Engine dies while driving at low RPM and low throttle position. Initially thought it was the cam sensor. Changed cam sensor and engine continued to die 4 times in 5 miles. Changed cam sensor again (had spare) with no improvement. No codes or engine light. Turn key off and truck starts right back up with no problem. Any ideas?
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Old 01-10-2009, 03:17 PM
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Look at the cam sensor face... tell me if it has markings on it. Like chafings.
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Old 01-10-2009, 03:20 PM
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Nothing, looks brand new. Truck has Edge box on it. Could this be effecting it?
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Old 01-10-2009, 03:26 PM
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Have you checked the engine harness? Could be some insulation missing inside that makes contact under certain conditions of vibration.
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Old 01-10-2009, 03:28 PM
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Which part of the harness is suspect. Had most of the top taken apart last night changing glow plugs. Problem was there before and after glow plug change.
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Old 01-11-2009, 11:11 AM
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Could the TPS possibly be the cause since the problem only happens at low throttle position???
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