LOST 5 MPG in 2004 T/C 3.3L
#1
07-23-2008, 08:43 AM
LOST 5 MPG in 2004 T/C 3.3L
We have a 2004 Chrysler 3.3L town and country minivan. We are getting 5 miles per gallon less gas mileage than before. It has new spark plugs and wires. The air cleaner is new. We had the fuel injectors cleaned. ANY IDEAS?
#2
07-25-2008, 01:22 AM
RE: LOST 5 MPG in 2004 T/C 3.3L
give it some time
after major changes (injectors), car's PCM needs time to re-learn driving habits and to recalculate exact amount of fuel for different driving conditions. also applies for spark timing, becouse PCM is a learning device, to compensate for any changes during it's lifetime.
so, for next 10 days or so, drive carefully and gently, and you will be back on your previous MPG.
after major changes (injectors), car's PCM needs time to re-learn driving habits and to recalculate exact amount of fuel for different driving conditions. also applies for spark timing, becouse PCM is a learning device, to compensate for any changes during it's lifetime.
so, for next 10 days or so, drive carefully and gently, and you will be back on your previous MPG.
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