Delta 88 Cam Sensor Error????? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-02-2008, 05:48 PM   #1
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Default Delta 88 Cam Sensor Error?????

Got a 94 Olds Delta 88 Royal with the 3.8. It runs perfect and has no problems other than the damn cam sensor code. I put a new cam sensor in and, it didn't help any. While I had the sensor out, I took a mirror and looked through the hole to check the magnet, its still there and the plastic is not broken. The magnet is fairly strong as I put a 3/8 drive socket up to it and it stuck pretty good, so the magnet is fairly strong. That leads me to believe the magnet is good. So if the magnet is good and the sensor is good, where do I look next?? Its driving me nuts, I keep getting both cam sensor codes, 41 and 42.

Anyone have any ideas?
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Old 01-02-2008, 05:52 PM   #2
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the cam signal goes thru the icm. to the pcm. so you first need to check for continuity between the cam sens harness and the icm. then from the icm to the pcm.

i have a book for 92 and 93, but not the 94-94. i know they are different. someone will chime in on the pin-outs.

41 is total loss of signal, so may be a loose wire or the icm?
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Old 01-02-2008, 06:21 PM   #3
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A common problem is that the magnet in the cam gear breaks loose. The magnet goes into the cam gear from the back, so it'* a pain to replace properly. But it can be done by JB welding a new magnet to the cam gear through the sensor hole in the timing cover.
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Old 01-02-2008, 06:34 PM   #4
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Quote:
Originally Posted by samueljackson
the cam signal goes thru the icm. to the pcm. so you first need to check for continuity between the cam sens harness and the icm. then from the icm to the pcm.

i have a book for 92 and 93, but not the 94-94. i know they are different. someone will chime in on the pin-outs.

41 is total loss of signal, so may be a loose wire or the icm?
What is the icm? and where is it located?
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Old 01-02-2008, 06:37 PM   #5
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Quote:
Originally Posted by J Wikoff
A common problem is that the magnet in the cam gear breaks loose. The magnet goes into the cam gear from the back, so it'* a pain to replace properly. But it can be done by JB welding a new magnet to the cam gear through the sensor hole in the timing cover.
he mentioned that he can see the magnet, and it held a 3/8 socket.



the icm is the ignition control module, come on you knew that. the module under the 3 coils.
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Old 01-02-2008, 06:57 PM   #6
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Quote:
Originally Posted by samueljackson
Quote:
Originally Posted by J Wikoff
A common problem is that the magnet in the cam gear breaks loose. The magnet goes into the cam gear from the back, so it'* a pain to replace properly. But it can be done by JB welding a new magnet to the cam gear through the sensor hole in the timing cover.
he mentioned that he can see the magnet, and it held a 3/8 socket.



the icm is the ignition control module, come on you knew that. the module under the 3 coils.
after I replied I was looking at the car and it dawned on my Ignition Module, I just never call it a icm. I checked the wiring between the sensor and the module and its good, making good connection. I swapped module with another icm and still throwing a code.

I guess next I need to check between the icm and the ecm. dammit....
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Old 01-02-2008, 08:29 PM   #7
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Quote:
Originally Posted by boysatt
Quote:
Originally Posted by samueljackson
Quote:
Originally Posted by J Wikoff
A common problem is that the magnet in the cam gear breaks loose. The magnet goes into the cam gear from the back, so it'* a pain to replace properly. But it can be done by JB welding a new magnet to the cam gear through the sensor hole in the timing cover.
he mentioned that he can see the magnet, and it held a 3/8 socket.



the icm is the ignition control module, come on you knew that. the module under the 3 coils.
after I replied I was looking at the car and it dawned on my Ignition Module, I just never call it a icm. I checked the wiring between the sensor and the module and its good, making good connection. I swapped module with another icm and still throwing a code.

I guess next I need to check between the icm and the ecm. dammit....
i thought it was the pcm
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Old 01-02-2008, 08:52 PM   #8
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Quote:
Originally Posted by Bonnevillan
i thought it was the pcm
they are one in the same.(mostly). ecm, ecu, pcm, brain, whatever, same part just different names. but technically its pcm, for this application.
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Old 01-09-2008, 10:03 PM   #9
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I fixed it by replacing the PCM, pretty stupid that that code was caused by a bad pcm and the car had no other problems and drove great.

Mike
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