2001 Jeep Cherokee Chrokee Sport review from North America

Cylinder #3 Fuel Injector keeps vapor locking. I bought the vehicle in the end of Sept of 2005 with 41,000 miles on it. I've had it back to the dealer 3 times. During a hot summer day when you stop at the store, come out after 5-10 minutes and restart it, it only runs on 5 cylinders. The dealer insulated the injector and it still does it. Now, he's telling me I have to replace the injector. When I know it's the faulty heat shield they installed between the exhaust and intake manifolds. The heat shield is designed in such a way that it allows heat to come up and around the #3 injector.

Attempts to make sense with the service advisor at the dealership have not succeeded. They just want money. In fact, I had to pay another $58 to reset the engine check light and be told I need to buy a new injector.

Is there any class action lawsuit against Jeep for this complaint? I've seen many other complaints here and on other websites.

This is the 5th Jeep I've owned with the 4.0L engine and the first engine to have that problem. E-mails to Jeep have been unsuccessful too.