i have a 2005 Mazda3 2.3 that i have been having some issues with that i think might be related.
First, is rough idle. its not a rhythmic bounce. it more like it lightly hopes around, (like 100-200rpms) also seems to idle kinda low when stopped and in drive.
second, poor gas mileage. i used to always get over 30MPGs, now no matter how i drive i always seem to get 25MPGs driving around town, going 60MPH on the express way, going 80MPH on the express, always yields 25MPG. These MPGs are calculated from fill up to fill up. so i am sure they are accurate.
third, this one is odd, if i take the car up to about 35 MPH and remove my foot off the gas pedal and just coast, as the car slows down to about 30 MPH the RPMs will drop to about 1000. Then bounce up to 1500, then back down to 1000, and back up to 1500... it will do this about 3-5 times before the settles on about 1200RPMs at about 27 MPH. it will do the same thing when breaking, but only bounces 1 or 2 times.
I dont have a check engine light.
First, is rough idle. its not a rhythmic bounce. it more like it lightly hopes around, (like 100-200rpms) also seems to idle kinda low when stopped and in drive.
second, poor gas mileage. i used to always get over 30MPGs, now no matter how i drive i always seem to get 25MPGs driving around town, going 60MPH on the express way, going 80MPH on the express, always yields 25MPG. These MPGs are calculated from fill up to fill up. so i am sure they are accurate.
third, this one is odd, if i take the car up to about 35 MPH and remove my foot off the gas pedal and just coast, as the car slows down to about 30 MPH the RPMs will drop to about 1000. Then bounce up to 1500, then back down to 1000, and back up to 1500... it will do this about 3-5 times before the settles on about 1200RPMs at about 27 MPH. it will do the same thing when breaking, but only bounces 1 or 2 times.
I dont have a check engine light.