ECM CODE 41 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-27-2004, 11:07 PM   #1
rcs
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Default ECM CODE 41

Hello Everyone ! i have a '93 bonneville, its drives ok when the weather is cold and the distance driven is somewhat short, but when its hot outside or i drive the car farther than 30 miles it spudders, loses power and eventually dies. My ecm has given me the code 41 for the camshaft position sensor, and the description i got for this problem sounds exactly like what happens to my car. So i bought a brand new sensor and replaced the old one and i still get the same results. I checked further into this problem and was told my camshaft interuptor magnet is bad. I have no idea where that is or that there is even such a thing, but i can't find anything about it. Any advice and suggestions are welcome. Thanks in advance !

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Old 04-28-2004, 12:39 AM   #2
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The camshaft interrupter magnet is a strong little magnet in a plastic holder (in some 3800s) that snaps into the camshaft gear from the BACKSIDE. To find out if yours is bad (usually, gone) get a telescoping mirror and pull the cam sensor pickup back out of its hole. Then shine a light on the mirror in front of the hole so the light goes in the hole and turn the engine over by hand with a big wrench. You will eventually see the magnet (good) or the hole it fits into (not as good) If it is gone or broken, you will have to remove the timing cover to install the new one $7 at O 'Reilly'* for the plastic version.

If you don't have one, get the Haynes or Chilton'* manual for your car. This is not a difficult job, but it will take you several hours.

Good Luck.
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Old 04-28-2004, 02:57 PM   #3
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thanks for the input bill !!! i'll have to check that out this weekend.
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Old 04-28-2004, 07:05 PM   #4
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Sorry to go off topic, but it looks as though Bill missed his 1997 SSEi.
Welcome back in the green.
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