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Cutlass Series Includes Cutlass Ciera, Cutlass Cruiser, Cutlass Calais, Cutlass Supreme, Custom Cruiser, as well as the GM N-Body subforums.
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Old 05-15-2007, 11:43 AM
kepaul kepaul is offline
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catalytic converter?

My daughters 93 Cutlass Supreme 3.1L. will start and run perfect after sitting overnite. If shut off and restarted after it is warmed up it will bog down and lose power, but sometimes it will kick back in and run perfect. I have shot the catalytic converter with an infrared thermometer and it was 120 degrees F different from the front to the back. I have installed new plugs, wires, air & fuel filters. Any suggestions are greatly appreciated.
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Old 05-15-2007, 02:41 PM
maxwedge maxwedge is offline
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Re: catalytic converter?

Good work on the cat, check fuel pressure when this happens, 35 plus is normal.
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