my 06 grand prix is only getting average on the computer 17.7mpg is that normal? what could I do to get it better just cleaned the mas. it is the 3.8 liter base model
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my 06 grand prix is only getting average on the computer 17.7mpg is that normal? what could I do to get it better just cleaned the mas. it is the 3.8 liter base model
thats about right if u drive some city miles in there. and plus the weather might still be cold where you are. and winter gas.
also make sure you're up to date on a tune up.
and fyi, my car gets 17.7 too so no worries
ok great yeah im in buffalo ny so its been real cold the last four months. I just did a tune up before winter. thank you
plus did you clock your mileage using the tach and the amount of fuel put in or did you use the mpg on the instrument cluster as that thing can be terribly inaccurate...use miles divided by gallons and see if its the same
should be better than that, my 02 gtx i got 23.7 on my way home from NJ last week
this is a throttle body
See those pictures. that the throttle body, even tho these pic off the 97-03 car, you get the idea.
It at the end of the air duction for the intake from the air box. take it off and spray it will brake clean and wipe it off.
yeah, remove the throttle body and spray the crap out of the inside and wipe it down good and make it all shiney and clean. Then put it back on.
Personally I wouldn't use anything but MAF cleaner but that's just me. I'm getting 14mpg city right now if it makes you feel better.
If you are getting less than 18mpg on a tank or two you have a problem, I was only able to get down to 18mpg two different times one was me trying to get a bad tank by driving like an ass all the time. The other tank was me running in SD mode doing some tuning.
What I would look for/do is:
Clean the MAF and TB (remove all sensors first)
Check for vacuum leaks
Replace the fuel filter
Replace the O2 sensor
Replace plugs and wires if they are old
BTW my car is NA so if you are supercharged I would figure the lowest mpg to get would be 16mpg.
My regal gs, supercharged, averages 23mpg, with 70percent highway 30percent city, and me occasionally driving like I have somewhere to be
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