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 Post subject: Is my cat clogged?
PostPosted: Fri Nov 14, 2008 6:37 am 
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I finally get the smurf thing

Joined: Mon Nov 10, 2008 1:20 am
Posts: 175
My van passed Oregon's smog but I just found out that for that year they hook up the car to the computer - through the computer's harness and not at the tailpipe. If the cat is bad will it suck engine performance? gas mileage?

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New owner of a 1996 Astro named "Plain Jane" - stock right now - with 200,000 miles on it and running like a champ


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 Post subject: Re: Is my cat clogged?
PostPosted: Fri Nov 14, 2008 12:41 pm 
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Joined: Sat Sep 09, 2006 10:35 pm
Posts: 4429
Location: New Haven, NY
If the cat is bad, it will definitely cause running issues and bad fuel economy. I would suspect your SES light to come on showing a code though. Mine did on a trailer towing trip. The cat came apart and partially plugged the exhaust and we had a hard time running the van the 200 miles home...towing a trailer!

To check for a bad cat, start the van up and take dead blow hammer or rubber mallet and tap the cat. You are listening for a ringing and for pieces rattling around.

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Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy


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