My car is running lean i changed the 02 sensor the mass airflow and fuel filter and I fit the vacuum leak what else can be wrong

Asked by Galvinray Mar 26, 2014 at 09:07 PM about the 1999 Buick Park Avenue Ultra FWD

Question type: Maintenance & Repair

2 Answers

130

Could possibly be the fuel pump itself or clogged injectors. You could rule out the fuel system itself by running a series or fuel pressure tests. Two main culprits of running lean, either 1)not enough fuel and 2) vacuum leaks allowing unmetered air into the system.

Best Answer Mark helpful

Your Answer:

Park Avenue

Looking for a Used Park Avenue in your area?

CarGurus has 31 nationwide Park Avenue listings starting at $4,488.

ZIP:

Own this car?

Share your experience with others.

1999 Buick Park Avenue

Review another car

CarGurus Experts

  • #1
    jateen29
    Reputation
    3,170
  • #2
    Joseph King
    Reputation
    2,040
  • #3
    Jim Campbell
    Reputation
    1,120
View All

Know more, shop wisely

Search

Related Models For Sale

Used Buick LeSabre
3 Great Deals out of 150 listings starting at $2,999
Used Lincoln Town Car
15 Great Deals out of 396 listings starting at $1,000
Used Buick Regal
42 Great Deals out of 697 listings starting at $1,995
Used Buick Riviera
34 listings
Used Cadillac DeVille
3 Great Deals out of 278 listings starting at $3,250
Used Buick Century
80 listings starting at $2,495
Used Chevrolet Impala
261 Great Deals out of 3,859 listings starting at $900
Used Cadillac Eldorado
165 listings starting at $2,950
Used Toyota Camry
2,022 Great Deals out of 40,475 listings starting at $1,550
Used Chevrolet Tahoe
1,077 Great Deals out of 19,932 listings starting at $2,264
Used Honda Accord
1,385 Great Deals out of 29,501 listings starting at $1,075

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. Content will be removed if CarGurus becomes aware that it violates our policies.