This could be several things. I would suspect the timing belt has jumped a tooth, or the cam could be going flat. If the engine has a lot of miles, it would be a good idea to change the timing belt.
Mpg will vary depending on the Caravan year and engine type. The 2014 Caravan gets 17mpg city and 25 mpg highway estimated.
Bearing going bad?
Does a 1995 dodge caravan SE have an interference engine?" Does a 1995 dodge caravan SE have an interference engine?"
Well that all depends on the size of Caravan: is it just a plain Caravan or it is a Grand Caravan? Then also it depends on the size of engine. I have a 2003 Dodge Grand Caravan All-Wheel Drive with the 3.8 liter V-6 engine, basically the largest one they make. On the Highway I can get up to 22 to 23 miles per gallon In the city, stop and go type driving I get around 16 to 17 miles per gallon.
the engine is extremely upset!!!! check for dirty air filter, low fuel pump pressure, partially blocked fuel filter. if an engine cannot "breathe" properly, it's trying to tell you "get me serviced immediately". the popping you heard probably set off a code in the ecm. a car engine uses a roomfull (12 x 12) feet of air a minute.
The 2002 Dodge Grand-Caravan has a V6 engine.
The 2004 Dodge Grand-Caravan has a V6 engine.
The 2014 Dodge Grand-Caravan has a V6 engine.
The 2005 Dodge Grand-Caravan has a V6 engine.
The 2007 Dodge Grand-Caravan has a V6 engine.
The 2010 Dodge Grand-Caravan has a V6 engine.
The 2012 Dodge Grand-Caravan has a V6 engine.