I posted a couple months back about my check engine light coming on
and poor gas mileage even before the light came on.
I got a new catalytic converter, and a new (rear or lower?) oxygen
sensor put in, as both were diagnosed as being bad (code P0138). No
Check Engine Light anymore, but I'm still getting only maybe 12 to 15
miles per gallon. Seems like maybe a tad more pep, but still not great
when I need the acceleration.
The mechanic is a friend of a friend who is licensed ASE or whatever
it is in Ohio, and he said I didn't need a tune-up, everything looks
good there. The mileage thing baffles him too, he said he'll also do
some research. BTW, the minivan now has about 119K miles, original
engine as far as I know, 6 cyl. 3.3, rebuilt (I think) tranny about
2.5 years ago when I bought it at 93K miles.
Any ideas what could be keeping mileage and pep down? Thanks much,