2008 subaru legacy problem

Asked by Cameron May 21, 2016 at 09:32 PM about the 2008 Subaru Legacy 2.5i Special Edition AWD

Question type: Maintenance & Repair

So I recently put in an cold air intake and my vehicle was
driving well at first but then I started to notice it was
loosing throttle response. I took it home and turned it off,
then turned it back on and tried to reverse and it starts
jerking and the rpms were bouncing. It does the same when
I put it in drive! So I eventually backed out of my drive way
but the car only let's me accelerate to 20 mph or lower. Im
not sure what to do. I've pulled a code  p2109. The car
sounds bad when It idles. Idk can someone help?

1 Answer
48,760

TheSubaruGuruBoston answered 8 years ago

Did you properly insert the MAF sensor? If not the ECM doesn't know how much air is being sucked in under throttle and therefore can't manage fuel injection. Further, CAI's NEVER work on the Subie 2.5i motors. Resell it online and go back to OE...there's plenty of air flow there. There's no inexpensive performance upgrade with this 2006+ variable- valve motor. Just treat your OB to H or V-rated nice rubber and be happy.

Mark helpful

Your Answer:

Related Questions

  • 2008 subaru legacy problem 4 Answers

    So I recently put in an cold air intake and my vehicle was driving well at first butime then I started to notice it was loosing throttle response. I took it home and turned it off, then turned it ...

    2008 Subaru Legacy 2.5i Special Edition AWD

    -

    Maintenance & Repair

  • 2008 subaru legacy problem 1 Answer

    So I recently put in an cold air intake and my vehicle was driving well at first but then I started to notice it was loosing throttle response. I took it home and turned it off, then turned it back...

    2008 Subaru Legacy 2.5i Special Edition AWD

    -

    Maintenance & Repair

  • 2008 Subaru Legacy repair 7 Answers

    I have a 2008 Subaru which always had regular repairs and maintenance. It has 110,000 miles. I brought it to a an independent mechanic and was just given an estimate for $4,000. Included was valve gas...

    2008 Subaru Legacy 2.5 GT AWD

    -

    Maintenance & Repair

  • problem smogging subaru legacy 2 Answers

    1995 Subaru legacy has problem passing smog as engine light will stay on. If driven the light will eventually go off, then can be smogged!!

    1995 Subaru Legacy

    -

    Maintenance & Repair

  • 92 Subaru Legacy clutch problem 6 Answers

    92 Legacy AWD Wagon, 175,000 miles. Engine running, put in gear, no grinding at all, let out the clutch, car does not move. Clutch action feels ok, clutch fork moves with clutch pedal. Can put in ...

    1992 Subaru Legacy L Wagon AWD

    -

    Maintenance & Repair

Shortcuts

Search Subaru Legacy Questions

CarGurus Experts

  • #1
    TheSubaruGuruBoston
    Reputation
    2,800
  • #2
    Anthony_60
    Reputation
    1,800
  • #3
    Tom Hawkins
    Reputation
    1,520
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Subaru Outback
40 Great Deals out of 953 listings starting at $1,795
Used Subaru Impreza
33 Great Deals out of 509 listings starting at $3,444
Used Toyota Camry
60 Great Deals out of 1,072 listings starting at $3,995
Used Subaru Forester
28 Great Deals out of 1,325 listings starting at $2,295
Used Honda Accord
55 Great Deals out of 995 listings starting at $2,000
Used Honda Civic
195 Great Deals out of 4,054 listings starting at $440
Used Toyota RAV4
100 Great Deals out of 2,715 listings starting at $2,500
Used Mazda MAZDA3
67 Great Deals out of 1,632 listings starting at $1,899
Used Lexus IS
18 Great Deals out of 316 listings starting at $6,500
Used Toyota Corolla
151 Great Deals out of 2,438 listings starting at $4,295
Used Honda CR-V
88 Great Deals out of 4,524 listings starting at $440
Used Mazda MAZDA6
15 Great Deals out of 198 listings starting at $2,850

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.