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2000 quest gives me 10 mpg


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mmarcial617
New User

Mar 21, 2012, 5:46 PM

Post #1 of 9 (1419 views)
2000 quest gives me 10 mpg Sign In

2000 quest mileage at 84k but its only giving me 10 miles per gallon. changed spark plugs used stp fuel injecter cleaner for last 6 fillups. no change. don't know what else to do. someone told me to try and change the oxygen sensor. help gas $4.27 and rising here.


Hammer Time
Ultimate Carjunky / Moderator
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Mar 21, 2012, 5:59 PM

Post #2 of 9 (1399 views)
Re: 2000 quest gives me 10 mpg Sign In

Thed 0/2 sensor does have the most effect on fuel mileage. Check the accuracy of temp sensors also. Inflate the tires to recommended pressure.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Mar 21, 2012, 6:27 PM

Post #3 of 9 (1364 views)
Re: 2000 quest gives me 10 mpg Sign In

Is that in the city or highway? That should be running rich as hell or leaking gas at 10 mpg unless it sits around idling a lot. The check engine light on?





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mmarcial617
New User

Mar 21, 2012, 7:43 PM

Post #4 of 9 (1341 views)
Re: 2000 quest gives me 10 mpg Sign In

i drive about 10 - 15 miles a day half city half highway no check engine light on, tires pressure checked, but just noticed that the air filter is broken. replacing that tomorrow.


Tom Greenleaf
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Mar 22, 2012, 9:50 AM

Post #5 of 9 (1306 views)
Re: 2000 quest gives me 10 mpg Sign In

Surprised a broken (not sure what that means) air filter sure would be a problem. About anything not right will be a problem and worse when really burning or wasting too much fuel will with some time clog up converter(s) and make it that much more of a problem to get back to normal.

Just note: The most efficient vehicle sitting still or that 10 feet at a time bumper to bumper traffic will get crap for MPGs. So depending on situations low MPG can be normal but not whatever way this air filter is broken so certainly fix that. Shocked it isn't throwing a code of a failure which would not say broken air filter but tell you that something is wrong and the area to go looking.

Hey - IMO and proven that injector cleaner just in your gas can be preventative but near certainly will not cure and injector problem. Easy on junk like that as it can cause problems!
T



(This post was edited by Tom Greenleaf on Mar 22, 2012, 9:53 AM)


Discretesignals
Ultimate Carjunky / Moderator
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Mar 23, 2012, 8:17 PM

Post #6 of 9 (1280 views)
Re: 2000 quest gives me 10 mpg Sign In

Inspect for broken pieces of the filter in the MAF sensor. Inspect the MAF sensor elements for contamination. You can clean the elements with MAF cleaner or electrical contact cleaner.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Tom Greenleaf
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Mar 25, 2012, 4:16 AM

Post #7 of 9 (1253 views)
Re: 2000 quest gives me 10 mpg Sign In

Polluting this thread with some fun.......

http://www.youtube.com/watch?v=8V-E9cLfMT8



"Mr. Sandman"

Tom


Discretesignals
Ultimate Carjunky / Moderator
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Mar 25, 2012, 7:20 AM

Post #8 of 9 (1240 views)
Re: 2000 quest gives me 10 mpg Sign In

I haven't heard that song in a while. The last time I heard that is when I was watching the movie Uncle Buck.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Tom Greenleaf
Ultimate Carjunky / Moderator
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Mar 25, 2012, 9:38 AM

Post #9 of 9 (1227 views)
Re: 2000 quest gives me 10 mpg Sign In

You know - getting old is a blast till you realize you ARE getting old!

Carry on,

Tom






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