Somehow my 2015 TC ended up with water underneath the valve cover - like around a quart, according to the dealer.
I had around 34K trouble free miles.
Van began having a cold start issue - rough idle, would cut out once or twice, then it'd start and stay smooth - maybe not quite as responsive. Starter sounded fine. Felt a lot like a fuel supply issue. Did this in the morning for a few days, I made an appointment at dealer - check engine light did not come on until the morning I was taking it in.
I get a call later in the day and the tech is wondering how water got into the area. I was mystified. It hadn't rained much for at least a couple of weeks and I hadn't cruised through any big puddles - no recent car wash, either. I racked my brain and couldn't remember anything out of the ordinary in the recent past.
They're replacing a few coils, plugs, and a sensor to get it running well again - under warranty, thankfully.
The dealer still needs to have a 3rd party water test done to prove to Ford that it's not leaking. My service tech thinks it may be a design flaw - that a good splash from a puddle by the front passenger tire could shoot water right up into the offending area. I don't know his reasoning and I'm still waiting on return of the van so I can't check it out.
Anyone have any experience/ideas?
