Subject	Cats should be colder in the front, hotter in the back right
Posted by	ChrisZTT(Sacto, CA) on April 26, 2022 at 9:02 PM
	This message has been viewed 195 times.
In Reply To	SMOG question posted by ChrisZTT(Sacto, CA) on April 26, 2022 at 04:25 PM
Message	I took it to a shop to get the cats checked. The results are interesting. Used an infrared temp gun and the readings at the front of each cat is about 205 and at the rear its about 120 and the pipes just behind the cat are about 90. Not sure if the tech had it set for F or C but either way it's colder at the back of the cat. It should be hitter, right? I think the catalyst is toast and their not working. Thought?
Follow Ups	SMOG question - ChrisZTT(Sacto, CA) 16:25:58 04/26/22 Since it fails on all 3 tests, the cats are not working - Bernie (NoVA) 20:58:17 04/26/22 Re: Since it fails on all 3 tests, the cats are not working - ChrisZTT(Sacto, CA) 21:03:54 04/26/22 I don't remember the timing. I can check later. (n/m) - ChrisZTT(Sacto, CA) 21:10:13 04/26/22 Cats should be colder in the front, hotter in the back right - ChrisZTT(Sacto, CA) 21:02:48 04/26/22 It should be hotter or at least the same at the rear... - Ted (92TT) 17:10:03 04/27/22 It idled on the lift for about 20 min prior to measuring. - ChrisZTT(Sacto, CA) 18:44:49 04/27/22 Please don't start to do random shit. - Bernie (NoVA) 21:45:58 04/27/22 Some answers - ChrisZTT(Sacto, CA) 01:54:37 04/28/22 Did they say what "Modified-Other emissions" was for? - Ted (92TT) 03:08:57 04/29/22 Down pipes. Going to wrap them and take somewhere else. (n/m) - ChrisZTT(Sacto, CA) 10:48:33 04/29/22 I thought about fabbing up some shields... - Ted (92TT) 22:29:52 04/29/22 More info - ChrisZTT(Sacto, CA) 20:22:12 05/05/22 How cats work: - Bernie (NoVA) 21:55:57 04/27/22 Re: How cats work: - robo (sebring1970) 01:48:50 05/06/22 Vid Link for Zed Cat Test - Cjw3 11:03:38 04/30/22 The cats need a 'Close to Stoch Mixture' to run. - Cjw3 10:08:07 05/01/22 Do you think 87, 89 or 91 octane would be better for testing (n/m) - ChrisZTT(Sacto, CA) 20:23:48 05/05/22 I herd lots of stories, nothing valid in my opinion (n/m) - Cjw3 06:27:02 05/06/22 Just a follow up... I PASSED! - ChrisZTT(Sacto, CA) 23:21:24 05/10/22 Awesome, congrats! Did you do anything new for the visual? (n/m) - Ted (92TT) 01:30:28 05/12/22 On the original cats? (n/m) - NytWolf 11:44:08 05/19/22
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