2004 Xc90 very low gas mileage even with new fuel pump

Asked by Tiffany Dec 03, 2020 at 08:57 AM about the 2004 Volvo XC90 2.5T AWD

Question type: Maintenance & Repair

I usually got pretty decent gas mileage with
my xc90 (17 mpg in the city). I then noticed it
stall out and the a gas guzzling situation with
a gas smell. My guy said it was the fuel pump
and a few other pumps needed cleaning. I got
a true volvo replacement and have found that
the car STILL is gas guzzling. Not quite as
much, but still a noticeable amount. ( I go 12
miles and use up an eighth of a tank...I
literally watch the needle move.)
This really doesn't make sense. My guy says
there are no codes that come up as if this is
the millage that is normal, when it's not.
I really feel something else is going on, OR I
got a faulty new pump, or it wasn't installed
properly.
Does anyone have an idea of what this could
be? This car has been well taken care of so
none of this makes sense.

10 Answers

Thank you Ford_fanatic87. out of curiosity my volvo guy is married to the computer system detector indicating a code and since no check engine light came on in addition to the the detector system, is there a possibility this evap issue won't signal a code or is not tripping a code because there is a malfunction somewhere?

3,360

Its possible depending on where the leak is and the size of it

1 people found this helpful.
3,360

As long as it's not leaking enough to be "outside of specifications" it wont throw a code

1 people found this helpful.

Thank you so much Ford_Fanatic87! I know something is off. for sure and I'm hoping that's it! I know when I push on the gas it takes more of a push to get it going than it used to and turning the key struggles every few times in the week. not sure if that's connected as well, but the evap leak will take me to a new place. I'm so appreciative of your time!!

3,360

Let us know what you find out and we will see if there's something else amiss that might also be causing your problem

1 people found this helpful.

Thank you! my guy still wants to wait for a code to pop up. aggh! so , I have to make the choice to just replace and cross my fingers it was the thing causing the issue, or hold for a code. frustrating .

3,360

A visual inspection of the lines will show if there is a break in the line, even if a code isn't given....best of all, if you look yourself or have a friend who can be trusted, it won't cost anything unless you find a problem.

1 people found this helpful.

I didn't think it was an easy visual to do. I thought the line was within the underbelly. but I'll Google. thank you!!

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