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Car Problems? NG900 or old 9-3 Only If you're experiencing problems with your NG900 or 9-3, post your question in here. CEL Code or GTFO!

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Old 09-23-2010, 05:36 AM   #21
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does anyone have a link to the part# at NAPA or the SC thread? I can't seem to find any forum search on there anymore!?!?!?
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Old 09-23-2010, 05:51 AM   #22
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sounds like a cat,, but if you want to take the easy way out, you can go into T7suite and adjust the limits on the second 02 so it will never come on...
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Old 09-23-2010, 05:55 AM   #23
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I hope it isn't the cat. I guess I might have to bring it to be diagnosed. it needs to be inspected soon and I need some tech II work done anyways (xenon light error code)


anyone know the size of the fouler adapter?
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Old 09-23-2010, 06:53 AM   #24
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http://www.saabcentral.com/forums/sh...ad.php?t=79649 (has a autozone part number)

SC search site: http://wiwya.com/

I can't find the thread too. That is where I got the part number for napa.
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Old 09-23-2010, 10:52 AM   #25
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thanks.

I talked to one of the best Saab techs in my area and he said that false alarm p0420 is a common issue with these cars (something about different metals mixing and not playing nice) and the wiring/ground needs to be fixed at the ECU. But not sure if this is my problem yet.

the car has 68K on it and the cat only 20K or so, so it is less likely to be the cat or o2 and more likely this issue, we think.
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Old 01-03-2011, 10:54 AM   #26
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Well that didn't fix it, I may have to try the anti-fouler thing. Is there any chance of the ecu needing adjustment, or this is definitely a hardware problem, yes?

Either a leak in the DP or the sensor is not positioned right, or going bad?
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Old 01-03-2011, 11:25 AM   #27
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Put your stock downpipe on and the problem with the p0420 will go away. The stock cat was designed with tree huggers/The EPA in mind, the race cat with racing. To get the cat to flow a large amount of exhaust, they had to make the pores bigger and stick a lot less "junk" in the exhaust stream.

The cat is working, just it was not designed to scrub the exhaust to the same degree as the stock cat was.
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Old 01-03-2011, 11:26 AM   #28
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lol

The car is tuned so I need to run the 3" pipe, and I don't have the stock one anymore anyways. I need to figure out the problem
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Old 01-03-2011, 01:17 PM   #29
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anti-fouler mod will work for sure.
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Old 01-04-2011, 03:49 AM   #30
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This code came up on my viggen and all I did was replace the plugs and clear the code, but something tells me I got lucky. Get this and it will go away.
Universal o2 simulator single output [unv-o2sim1] - $40.00 : O2 Simulator, E-commerce
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Old 02-22-2011, 05:30 PM   #31
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GS v2 DP with about 15,000 miles.
Put in brand new O2's when I installed it.

I used the non-foulers with my original MP DP and that worked.
I think I'll be turning it off in the software this time.
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Old 02-22-2011, 05:59 PM   #32
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Quote:
Originally Posted by Ice Man View Post
I had this as well after about a year with the gs dp. I opted for the spark plug non-fouler mod as shown here: O2 Sensor modification using spark plug non-foulers I think there may be a thread on here too or on SC with the Napa part number.

It just takes the o2 sensor out of the exhaust stream. (I think the flow thru the race cat is a bit too fast for the o2 sensor.... I think) It was a very tight fit to drill it out and fit the sensor head. But it works, no CEL. Cost was like $5, plus a drill bit.
I did this on my accord and it worked great. Someone told me it wouldn't work on T7 since the rear o2's were more "sophisticated" than on a mid 90's honda, but I guess they were wrong.
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Old 02-24-2011, 12:08 PM   #33
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I have run the non-fouler mod without a cat for over a year. No CEL. works great, and you can find them at any parts store.
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