2002 Chrysler Van Help with 2002 Chrysler minivan reving at

I usually worked for Chrysler or Dodge dealers service departmrnts because I could not yet afford my own shop, and a dealer offers a better all around benifit pkg. For a free agent like technician and the fastest way to lose that position was 2 things, bad luck, and having your repairs come right back in a mile or two. It has no advantage for anyone. And once a customer is lost, it's over.
If you, in your search for fair service are not happy, and I have felt the same way, try a second opinion. There are two things, common to all of the parts replaced that could be causing everything. Or this shop is just telling you the truth.
Try a different shop, that employs many technicians who see mostly Chrysler products. They will not blame anyone if they agree with your shop's idle speed motor diagnosis. But they will have a much higher chance of repairing it, and driving it long enough to try and add a new customer because all dealers need the work. I find it unusual that all 4 parts would fail. But sometimes it can happen. There is wiring and software common to all 4 failures that is more likely to fail than 4 rather expensive parts like that. I'm sure your shop didn't expect this outcome either. Bring it for a second opinion because it's not too difficult now because of the parts already replaced. If your happy with your newer service shop, everyone will be happy, and you will have found a better place to bring your mini-van. Ok

Yes I have AAA and a cell phone. It is not worth the hazards and expense of any other way. I sure am happy your car is straightened out. My name is Joe. My advice to you is find another repair shop.
Sometimes thats the way in life. It is experience with bad things that help you with good things. Anytime you have a question just ask. My bad experiences are your good advice.