CPS Question

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Feb 25, 2005 | 11:23 PM

Chips2000

Thread Starter

Mountain Pass

Joined: Aug 2003

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CPS Question

I thought I read somewhere on this forum that to change a cam position sensor, that you had to loosen or remove the belt.

Thanks

Feb 26, 2005 | 12:59 AM

Powerstrokedlariat

Postmaster

Joined: Sep 2004

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From: Bellingham, WA

It helps to remove the belt, but not necessary. Lay underneath the truck and use a 10mm socket with about a 6'' extension if I remember right, and then just remove the bolt and replace. Takes some very creative bending to get to it but I found that to works well.

Feb 26, 2005 | 05:52 AM

blackf3504dr

Elder User

Joined: Jul 2004

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From: Leesburg , Fl.

You can do it with the belt in place but .... It only takes a couple of seconds to remove the belt , then you aren't trying to work around it .

Feb 26, 2005 | 01:49 PM

Chips2000

Thread Starter

Mountain Pass

Joined: Aug 2003

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Thanks! The argument is now settled.

Feb 26, 2005 | 11:13 PM

sertman

Freshman User

Joined: Jun 2003

Posts: 26

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From: central california

i just did on this morning. real easy to get to from right side underneath with the belt on. 3/8" ratchet, 4" in extension and a deep 10mm socket. hardest thing was gettin the 6 year old sensor out of the hole. it kinda was stuck.

Feb 27, 2005 | 12:57 PM

QFD90

Senior User

Joined: Feb 2005

Posts: 164

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From: Illinois

Ok, uneducated question time. Why does this sensor need to be replaced and how often? What does the cam position sensor do?

Feb 27, 2005 | 01:14 PM

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

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From: Rio Rico, AZ.

Quote:

Originally Posted by QFD90

Ok, uneducated question time. Why does this sensor need to be replaced and how often? What does the cam position sensor do?

When it failes the engine will refuse to run. It gets a reading from the camshaft and sends timing information to the Engine Control Module. Without a good signal from the CPS the ECM has no idea what the timing of the engine is and just shuts down or at best makes the engine run real crappy.