Hey, I have a 2000 Cirrus with the 2.4 with 93000 miles on it. For the last couple of months now I have noticed a huge dip in fuel economy. I replaced plugs, wires all filters etc to no avail. Last week I noticed the temperature guage reading lower than usual. So I bought a new thermostat and when I took the old one out, somehow the lower section of the thing became seperated and as a result was stuck open. Well I put in my new thermostat and to my suprise I am running at top efficency and the car is running better than ever. I dont know if there is a defect in the original thermostats or what, but keep this in mind if you have the same problem.

 

seen alot of them do that, pretty common.

 

Thanks for letting everyone know, it will probably help a few people out who need it.[sm=smiley20.gif]