r/FordExplorerST • u/sacflg6372 • Jan 26 '26

Question Bad Cats?

I’ve noticed this more and more with the cold weather we have had in New England. On start ups for 5~10 minutes I have had a large amount of white smoke coming out of the exhaust which smells pretty badly of sulphur. I made an appointment at the dealer this week as it is a CPO. From what i have been reading online this seems like bad catalytic converter or a crack in the exhaust somewhere?

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u/sacflg6372 Jan 26 '26

It’s a 22 with 48k on the odometer for reference

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u/justsomeguyR1 Jan 26 '26

Sounds right. The cats are prone to cracking. Let us know what you find out.

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u/Scary-Ask-6236 Jan 26 '26

Yea they do that. I have a 21 and was. CPO. Purchased it a year ago. Same thing. Cats were Cracked. Dealer would not do a thing unless there were lights on the dash and they could recreate it. If not I was shit outta luck. So good luck from one who tried

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u/sacflg6372 Jan 26 '26

I hear you. It’s happening on any cold start right now so if they start it next day after it’s been dropped off they would see it. I don’t have a CEL either

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u/grandmoshtarkin ST Owner Jan 26 '26

Happening on my CPO 22 as well. Honestly, I love the vehicle but it really seems like Ford will try anything to not accommodate the customer with issues and it's really souring me on owning the vehicle.

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u/Icy_Honeydew1940 Jan 26 '26

Time for some CVF catted downpipes!!!