SES light = Messed up CATS?
Thread Starter
Joined: Mar 2002
Posts: 5,778
Likes: 4
From: SW Chicago, IL
SES light = Messed up CATS? Yesterday while driving to work like I always do, out of know where the SES light came on (about a min away from me parking). I have no idea why it would go off and I want fixed. I'm gussing some O2 sensor just went off because its so cold... but I'm not totally sure so . Does anyone have any idea's...
FYI: I haven't added anything performance or engine wise to the car for over 4 months. My only engine mods include a SLP loudmouth, SLP lid and K&N filter.
<small>[ February 07, 2003, 03:35 PM: Message edited by: MadIceV8 ]</small>
FYI: I haven't added anything performance or engine wise to the car for over 4 months. My only engine mods include a SLP loudmouth, SLP lid and K&N filter.
<small>[ February 07, 2003, 03:35 PM: Message edited by: MadIceV8 ]</small>
Re: SES light = Messed up CATS? Guessing is kind of stupid. Just have it scanned. Most chain auto parts stores will scan it for you for free. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Thread Starter
Joined: Mar 2002
Posts: 5,778
Likes: 4
From: SW Chicago, IL
Re: SES light = Messed up CATS? Well I took it to GM and found out whats wrong, and the CATS are messed up... he said because their was no "Back preasure". They are covering it under warrenty, but could this be because of the loudmouth exhaust? Or did my CATS just suck anyways?
TECH Apprentice
Joined: Jun 2002
Posts: 304
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From: Richmond, Va.
Re: SES light = Messed up CATS? it seems that the "no back pressure" is a popular line with the dealers. i saw the same thing in that click and clack auto column in the newspaper. something about burning valves? good luck.
Thread Starter
Joined: Mar 2002
Posts: 5,778
Likes: 4
From: SW Chicago, IL
Re: SES light = Messed up CATS? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MEAN MACHINE:
<strong> it seems that the "no back pressure" is a popular line with the dealers. i saw the same thing in that click and clack auto column in the newspaper. something about burning valves? good luck. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yea I've been hearing the same thing with this backpressure BS. They are fully repairing what they "think" is wrong, which is adding new cats and some other part. When I was keeping a eye on my car their was 4-5 GM tech's and the service manager looking under my car, hehe.
PSJ, yes it is basically a stock exhast system. Just the SLP loudmouth, no headers or ORY (yet <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ).
<strong> it seems that the "no back pressure" is a popular line with the dealers. i saw the same thing in that click and clack auto column in the newspaper. something about burning valves? good luck. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yea I've been hearing the same thing with this backpressure BS. They are fully repairing what they "think" is wrong, which is adding new cats and some other part. When I was keeping a eye on my car their was 4-5 GM tech's and the service manager looking under my car, hehe.
PSJ, yes it is basically a stock exhast system. Just the SLP loudmouth, no headers or ORY (yet <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ).
