Message: i have had the cat on 99 5.2 w/ cal. emmissions replaced 4 times. my dak is only at 29,000 miles.
it start out with a sulfuric (rotten egg)smell which leads to my gas milage getting worst. everything checks out ok when i take it in. the dealer blames the gas i have tried all grade and even buy it at different gas stations.
any help with this would be greatly appreciated. my warrantee is up soon so i need to find out if it is engine related.
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Subject: bad cats--- need help