7.3 powerstroke cam sensor issues?
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Freshman User
Joined: Feb 2011
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7.3 powerstroke cam sensor issues?
i have a 99 f250 7.3 powerstroke. the cam sensor was acting up. that what the scan tool said. i replaced the cam position sensor yesterday, and the truck is still acting up. the motor hitches and will shut off randomly. it tripped the check engine light, and the code is the "cam position sensor" once the truck is warmed up and shut down for like 10 minutes the sensor will not act up anymore. if i just start the truck and run it, even once it is up to tempature it will act up. but if i shut the truck down for about 10 minutes, it goes away. is there something else that could be causing this? thank you
Senior User
Joined: Dec 2009
Posts: 254
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From: Lake Greenwood, SC
Did you get an OEM CPS or maybe something from an auto parts store? There's lots of discussions regarding this in the 7.3 forum. Some say the aftermarket CPS units have not worked right for them and swear by one of the OEM versions.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
You don't need to disconnect the batteries. If the CPS is good then the PCM will see the tach signal and everything will be fine.
If you want to put vaseline or di-electric grease on something, it goes on the rubber gasket at the plug connector. This helps provide a better seal that will keep moisture out of the electrical connection.
And as Ken originally said. Too many problems with the aftermarket CPS from places like NAPA etc. Stop by Ford and you should be able to pick one up for around $25.
If you want to put vaseline or di-electric grease on something, it goes on the rubber gasket at the plug connector. This helps provide a better seal that will keep moisture out of the electrical connection.
And as Ken originally said. Too many problems with the aftermarket CPS from places like NAPA etc. Stop by Ford and you should be able to pick one up for around $25.
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From: Concord NC
Stay away from the aftermarkets. Seen too many of them have issues. Make sure the code reader you are using is PSD compatible. If not, it may not even be reading the codes right. Your problem does sound like a CPS, but there could be other things that cause it.
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Joined: Feb 2009
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Here is a good link for you that will help you know the difference between different CPS sensors.
Black CPS proves to lower PERDELS again
Black CPS proves to lower PERDELS again
Post Fiend
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From: Payson, AZ