1991 Buick Lesabre CAM shaft magnet location

STEELFAN03

MEMBER
1991 BUICK LESABRE
6 CYL
FWD
AUTOMATIC
102,000 MILES

I was just wondering, where is the magnet located for the cam shaft position sensor to read. And if the magnet is gone would that make my car not be able to accelerate rapidly through the range of gears.

Monday, December 29th, 2008 AT 7:14 PM

3 Replies

MMPRINCE4000

MECHANIC
8,549 POSTS

The camshaft position sensor is a magnet and reacts to a timing point on the camshaft to send info to the ECM with regard to the cams relative position.

However, I would not focus on the CPS unless you are getting an error code pointing to it, in which case it would most likely be the sensor not the camshaft.

I would suspect fuel pressure, ignition, unless you are getting a specific error code.

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Tuesday, December 30th, 2008 AT 7:17 AM

STEELFAN03

MEMBER
5 POSTS

Im getn a error code of 41. Ive changed the crankshaft position sensor, the camshaft position sensor, the coil pack and ignition module. Now im just at a loss of what to do. Im startn to think the magnet interrupter is gone. And I think thats located on the cam sprocket, let me know if I need to go another route. Thanks for the reply. Steelfan03

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Wednesday, January 7th, 2009 AT 10:08 PM

MMPRINCE4000

MECHANIC
8,549 POSTS

I would find a shop that can scan OBDI cars in live data mode. Check the ignition reference pulse.

Also inspect all wiring connections to the ignition for wear/missing insulation. Have the ign. Module tested at most autoparts stores for free.

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Friday, January 9th, 2009 AT 9:27 AM