Exhaust was pluged with ice, thats what the air venting was. The car started this morning for about 5-10 sec. and shut off I heard air gushing out from under the car. After work came home started right up no smoke from tail pipe,turned off,air started gushing out from under the car. Same thing turned the heater on for about 3 hrs. in garage and car started right up, held the accelarator at 3k rpm I could see from tail pipe spitting out water and chunks of ice.

This summer I had the resonator removed it was leaking with straight pipe from cat to muffler at exhaust shop, it kind of sags before the muffler. I wunder if this is where the water builds up from condensation and freezes, plugs up the exhaust cousing all this trouble.

Any thoughts on this

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1995 E320
1998 E320
1999 E320 4Matic
2000 E320 4Matic
2000 ML320
2007 C230 Sport
2003 Cadillac CTS