Unplugged mass air sensor on 2002 bmw 325i. And now it runs fine. Have spent over 1000. Dollars on parts. Don't know what to do. Should I replace the airflow sensor or mass

Asked by Jan 22, 2015 at 07:24 PM about the 2002 BMW 3 Series 325i Sedan RWD

Question type: Maintenance & Repair

Mechanic said replace fuel filter. Should I
replace that or mass air flow sensor.?

1 Answer

130

Yes, replace it. From 1999 to 2005 BMW 3 series is famous for having the PCV system clogged and setting up the "check engine" light with codes not related to it also making it run like S**T... You know you must use Premium fuel no matter what, most BMW owners don't and end up expending lots of dollars later on repairs. Also the valve cover gasket is a common area for oil leaking, you must replace all the bolts "grommets" at the same time to cure the problem. Check your intake hoses for cracks before replacing the MASS AIR FLOW SENSOR.

1 of 1 people found this helpful.

Your Answer

BMW 3 Series Experts

  • #1
    Tom Demyan
    Reputation
    5,150
  • #2
    Robert Charlson
    Reputation
    1,670
  • #3
    grolyate
    Reputation
    1,260
View All

Related Models For Sale

Used BMW 5 Series
505 Great Deals out of 15,837 listings starting at $1,500
Used BMW M3
31 Great Deals out of 2,094 listings starting at $6,599
Used Mercedes-Benz C-Class
790 Great Deals out of 29,427 listings starting at $1,500
Used Audi A4
306 Great Deals out of 12,392 listings starting at $1,899
Used Ford Mustang
569 Great Deals out of 37,031 listings starting at $2,595
Used Mercedes-Benz E-Class
665 Great Deals out of 22,196 listings starting at $1,500
Used Honda Accord
1,119 Great Deals out of 67,144 listings starting at $561
Used BMW X5
347 Great Deals out of 15,564 listings starting at $2,995
Used BMW 7 Series
104 Great Deals out of 5,341 listings starting at $2,999
Used BMW 6 Series
74 Great Deals out of 2,495 listings starting at $5,950
Used Chevrolet Camaro
475 Great Deals out of 31,755 listings starting at $1,450

Used Cars For Sale

2017 BMW 3 Series For Sale
135 Great Deals out of 5,450 listings starting at $24,775
2016 BMW 3 Series For Sale
56 Great Deals out of 1,498 listings starting at $18,591
2015 BMW 3 Series For Sale
71 Great Deals out of 2,233 listings starting at $14,899
2014 BMW 3 Series For Sale
307 Great Deals out of 5,070 listings starting at $10,999
2013 BMW 3 Series For Sale
69 Great Deals out of 1,619 listings starting at $11,599

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.