running fine,then bucks

Asked by Jan 17, 2012 at 05:57 PM about the 1997 Volkswagen Passat 4 Dr GLX V6 Sedan

Question type: Maintenance & Repair

Hello,we have a 1996 Passat 4cyl. It purrs like a kitten,but after 10 or 15 min. it bucks like crazy.The refs go up and down with some back-fires.We installed new plugs, wires,fuel filter,fresh gas.(even added gas-treatment).Any ideas???

3 Answers

4,855

Hmmm....a clogged catalytic converter might be the culprit... but, backfires are uncommon unless there's a serious overage of fuel in the exhaust. I would check the CAT first...then look for an injection issue.

65

Does the bucking and messing about continue or clear up? In 10 to 15 minutes the engine would get hot. I would guess at a sensor failing and delivering a very rich mixture, over-fuelling would cause all of those symptoms. Get it on a diagnostic computer with someone who knows how to use it.

4,855

1996 Passat should have an OBDII computer (on-board diagnostic). IF you had a sensor throwing a code, you would have a light on the instrument console. A visit to a diagnostic center is a good idea.

Your Answer

Passat

Looking for a Used Passat in your area?

CarGurus has 26,824 nationwide Passat listings starting at $1,500.

ZIP:

Volkswagen Passat Experts

  • #1
    tenspeed
    Reputation
    1,420
  • #2
    Tom Demyan
    Reputation
    1,300
  • #3
    Chrisand Edwards
    Reputation
    1,270
View All

Related Models For Sale

Used Volkswagen Jetta
647 Great Deals out of 35,850 listings starting at $995
Used Honda Accord
1,113 Great Deals out of 73,321 listings starting at $1,100
Used Toyota Camry
1,136 Great Deals out of 86,705 listings starting at $800
Used Audi A4
336 Great Deals out of 12,502 listings starting at $1,899
Used BMW 3 Series
1,156 Great Deals out of 32,726 listings starting at $1,200
Used Nissan Altima
1,359 Great Deals out of 77,587 listings starting at $1,695
Used Honda Civic
819 Great Deals out of 60,826 listings starting at $950
Used Hyundai Sonata
926 Great Deals out of 56,726 listings starting at $1,500
Used Volkswagen GTI
147 Great Deals out of 6,228 listings starting at $1,490
Used Volkswagen Golf
104 Great Deals out of 3,754 listings starting at $1,500
Used BMW 5 Series
574 Great Deals out of 15,693 listings starting at $1,650

Used Cars For Sale

2017 Volkswagen Passat For Sale
31 Great Deals out of 4,910 listings starting at $12,990
2016 Volkswagen Passat For Sale
64 Great Deals out of 1,551 listings starting at $9,247
2015 Volkswagen Passat For Sale
118 Great Deals out of 2,972 listings starting at $6,985
2014 Volkswagen Passat For Sale
134 Great Deals out of 2,347 listings starting at $4,995
2013 Volkswagen Passat For Sale
125 Great Deals out of 2,362 listings starting at $4,900

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.