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Old 02-06-2012, 02:24 PM   #1
Sky King
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1999 SC2
1995 SL2
Default P0341 trouble code

Haven't been on here for a while but I have a problem that keeps comming back.

The car is a 1999 SC-2 with 260K + miles. This problem did not appear untill I did a tune up consisting of plugs and wires. I removed the coil packs and ignition module and cleaned the mating surfaces, contacts and coil towers. I used a dielectric grease on the plug wires to keep moisture out on both ends.

Now. P0341 is a fault related to a camshaft position sensor which this model does not have. The tech at what used to be the Memphis Saturn dealer, (who has been with them from day 1) said that this data is the result of what boils down to a calculation in the ECM using data from other ignition components and it "generates" a calculated CMP. He said to re-examine the ignition system components.

I did so and still the fault returns. I have however noted what may be a patern to the problem. It only appears at start up after sitting like overnight. It also seems to be associated with weather conditions that are very moist. Long rain, high humidity, and so on. The Service Engine Soon light extinguishes after a day or so of driving as though it is warming up enough to dry things out. The engine does not run bad.

I can clear the code with my scan tool and it will not return untill the next heavy humidity condition.

Thoughts?

Also can any of you reccomend a good aftermarket ignition module and coil packs that may be a bit better than the factory OEM or standard replacement parts?
...
1999 SC-2 280,000 miles -mine now also dead, RIP
1995 SL-2 296,000 miles - my wifes totaled, RIP
1993 Chevrolet S-10 Pick-up - mine
2003 Harley Davidson Low Rider - mine
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Old 02-06-2012, 02:43 PM   #2
GPCBAKER
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1996 SW2
Default Re: P0341 trouble code

Verify that the spark plug wires for cylinder 1 and 4 are very close to each other from the coil packs all the way up to where number 4 wire goes into the plug hole. A 'phantom' cam position sensor is generated between plug wires 1 and 4 for the computer via the coil packs.
I understand that aftermarket coil packs are inferior to the original OEM units.
...
1999 SL2, My first Saturn. GONE
1996 SW2, My second Saturn
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Old 02-06-2012, 02:51 PM   #3
Sky King
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Default Re: P0341 trouble code

Quote:
Originally Posted by GPCBAKER View Post
Verify that the spark plug wires for cylinder 1 and 4 are very close to each other from the coil packs all the way up to where number 4 wire goes into the plug hole. A 'phantom' cam position sensor is generated between plug wires 1 and 4 for the computer via the coil packs.
I understand that aftermarket coil packs are inferior to the original OEM units.
When you say "very close", I presume you mean that they are physically close, all the way from the coil packs to where they would separate to go to their respective plugs? So I take it that they "sence" each other by their proximity to each other through induction?

I have in the past many years usually secured all the plug wires with tie wraps in addition to the installed stand-offs. Not to anything on the engine but to each other in what would be considered a bundle if you will. I will check to see if I have the #1 and #4 adjacent to each other. Thanks.

ps.
In my "bundle", could the #1 or #4 be "feeling" one of the other two (2 or 3) creating the wrong calculation if they are too close?
...
1999 SC-2 280,000 miles -mine now also dead, RIP
1995 SL-2 296,000 miles - my wifes totaled, RIP
1993 Chevrolet S-10 Pick-up - mine
2003 Harley Davidson Low Rider - mine

Last edited by Sky King; 02-06-2012 at 03:01 PM.
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Old 02-06-2012, 03:10 PM   #4
GPCBAKER
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1996 SW2
Default Re: P0341 trouble code

Do a search on spark plug wires and some of the threads show how the number 1 and 4 wires should run parallel to each other.
...
1999 SL2, My first Saturn. GONE
1996 SW2, My second Saturn
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Old 02-06-2012, 03:57 PM   #5
Sky King
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1995 SL2
Default Re: P0341 trouble code

Ok, I checked the routing and I did not have 1 and 4 next to each other after leaving the coil pack. I rearanged them and they are now next to each other in all the stand offs. I'll wait and see if the code returns.

Thanks for the input.
...
1999 SC-2 280,000 miles -mine now also dead, RIP
1995 SL-2 296,000 miles - my wifes totaled, RIP
1993 Chevrolet S-10 Pick-up - mine
2003 Harley Davidson Low Rider - mine
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