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Re: is it the catalitic converters
how many miles are on your rig? todays cat convertors especially under obd2 only last around 80,000 miles in all city driving. alot longer if you drive on the highway or not. usually the obd2 system will flag a cat code if the flow is clogging up, but stranger things have happened. you can go to a muffler shop and request a flow test. they have to drill a whole in the system to measure the flow. but that is how you really tell if your cat is bad.
also if you have a data reader (not a code reader) and you know how to interpret the data stream from the upstream and downstream o2 sensors you can also tell how effective the cats are. good luck! mike
p.s. be carefull buying new cats (if ya need them). some new cats will flag a cat code on the obd2 system. make sure you get certified (epa) cats and make sure the shop that puts them in will garantee they will not flag a cat code. why get the garantee? because small claims court sucks!
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2006 liberty 3.7 6speed manual
1999 cherokee classic 4.0L
1991 wrangler yj 2.5L
2001 caravan 3.3 auto
1995&1992&1994 camry 2.2L SOLD
1991 silverado 1500 SOLD
2000 rodeo SOLD
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