Purchased vehicle 4 weeks ago. Fuel pump went out week one. Replaced fuel pump and filter. The car ran fine until yesterday. Began to sputter and then died. Will not restart. Cranks but will not turn over. Checked the timing belt and it looks good. Diagnostic test calls for bank 1 fault. po420. Local parts store tested and advised that the catalytic converter could cause my issue. Checked all fuses. All visible electrical connections look okay. At a loss.
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