Hi Everyone,
I am totally new to this Forum and to US in general.
I have an issue with my Dodge Grand Caravan 2009 3.3L
Last month I realized that while i was driving the Temp Gauge drops to Zero ( C) position while i was driving, i parked the car turn off the engine, restarted the engine the temp gauge returned to its normal position which is a little bit below the mid position.
One day while i was on a traffic, the antifreeze at the coolant reservoir starts to boiling, while the temp gauge was at the normal position ( at the middle), i towed the car to the mechanic and he inform me that there were no antifreeze at the radiator and the radiator cap is faulty and he replaced it.
last week it happened again while a was in a traffic it start boiling again, and again no antifreeze at the radiator but the coolant reservoir is full and the temp gauge was in the normal position!!!
Please help me find a solution to fix this issue.

 

Off the cuff guess is that your thermostat is shot, but someone with more knowledge than myself should hopefully chime in.