Rough starts and slow acceleration

Asked by Tyler Jun 05, 2014 at 10:18 AM about the 2005 Volkswagen Jetta GLI FWD

Question type: Maintenance & Repair

I've been having a few problems with
my mk4 jetta. Lately after the car hasn't
been started for 8 or more hours it
starts really rough and dies unless I rev
it while it evens out. Then it idles and
starts fine after that. The second
problem I'm having is with acceleration
from 40mph or so and beyond it
seems. I can put the peddle all the way
to the floor and it will accelerate 1
mph for every second, then all of a
sudden the power will come back the
next time I drive it. It isn't throwing any
error codes and there hasn't been any
CEL light on from the rough starts. I'm
stumped. Any idea on what it could
be? Thanks!

2 Answers

3,265

It sounds like you have got a mass air flow sensor bad, or a throttle positon sensor that has gone bad.

Alright I think you are on to something with the TPS. When I'm in 5th gear and floor it the scanner says the throttle percentage is only at 29- 30%.

Your Answer:

Jetta GLI

Looking for a Used Jetta GLI in your area?

CarGurus has 1,358 nationwide Jetta GLI listings starting at $2,500.

ZIP:

Own this car?

Share your experience with others.

2005 Volkswagen Jetta GLI

Review another car

CarGurus Experts

  • #1
    Greg0Linda2
    Reputation
    110
  • #1
    Mark Schmidt
    Reputation
    110
  • #3
    Rowefast
    Reputation
    90
View All

Know more, shop wisely

Search

Related Models For Sale

Used Volkswagen Golf GTI
138 Great Deals out of 3,813 listings starting at $1,416
Used Volkswagen Jetta
696 Great Deals out of 16,678 listings starting at $1,600
Used Honda Civic
1,353 Great Deals out of 28,004 listings starting at $1,299
Used Toyota Camry
1,992 Great Deals out of 34,576 listings starting at $500
Used Honda Accord
1,506 Great Deals out of 28,825 listings starting at $500
Used Volkswagen Passat
337 Great Deals out of 4,145 listings starting at $1,100
Used BMW 3 Series
1,097 Great Deals out of 12,574 listings starting at $700
Used Mazda MAZDA3
485 Great Deals out of 12,080 listings starting at $1,500
Used Audi A4
380 Great Deals out of 4,668 listings starting at $1,600
Used Ford Mustang
905 Great Deals out of 22,357 listings starting at $783
Used Audi S4
59 Great Deals out of 824 listings starting at $4,300
Used Toyota Corolla
1,589 Great Deals out of 23,205 listings starting at $625

Used Cars For Sale

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.