One problem related to automatic transmission cooler has been reported for the 2003 Ford Windstar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Windstar based on all problems reported for the 2003 Windstar.
Our van was fine until it was having a hard time shifting. We took the van into a transmission specialist and had to replace the transmission due to water. And also had the water to the radiator completely bypass the transmission. Everything was fine until months later it was having a hard time shifting. Somehow a lot of water had gotten in there. There's no way it's from the radiator since like I said it bypasses the tranny and has a different cooling thing?? now he thinks it's from the a/c. So now it's in the shop again and I already spent $300 for a complete flush. Now I might have to do it again. Plus he's going to make a shield for the a/c. This is crazy.