Noise on cold start

10

Asked by Mar 16, 2014 at 09:38 AM about the 2003 Volkswagen Passat GLX 4Motion

Question type: Maintenance & Repair

Recently purchased a 2003 VW Passat GLX 4 Motion for my teen driver.  Have noticed
that upon a cold start the car makes an unusual noise near the front of the engine.  Lasts
for only about a minute or two and then stops.  Almost sounds like some type of
electronic sensor or something is warming up and then shuts off.  Doesn't appear to be
coming from any belts and serpetine belt has already been replaced.  Is this a normal
function on the Passat.

6 Answers

22,415

The car is 10 years old- you rule out belts- could be a bearing going out, alternator or tensioner bearing- hard to tell from here without hearing it- if the car is running ok, just run it until the noise gets louder- if it worries you, (like it should) just take it to a pro and have him/her listen- a 10 year old VW will need a good mechanic if you don't already have one

1 of 1 people found this helpful.
565

Most likely the Secondary Air Injection Pump turning on and then turning off. It runs during cold starts to lean out the rich air fuel mixture in the exhaust, which helps your cat function more efficiently.

4 of 4 people found this helpful.
10

Thanks Armaan....the scenario you are describing makes good sense. It sounds like it something normal occurring during start up because it turns on and off within a minute of starting the engine. I would think if there were a severe issue it would continue to make the noise more frequently on start ups and last longer.

1 of 1 people found this helpful.
565

Not a problem! Yes if there was a problem it would not occur with such consistency. Enjoy the car!

1 of 1 people found this helpful.

I have the same problem same sound that bucknuts14 is talking about, but I have a 2014 passat Wolfsburg edition. Car only has 28000 miles. If the car is warm I don't hear the sound on start up but if it is cold I hear it until to the car is warm. Can anyone one help me?

my mechanic said it is the tensioner (cost $ 250) and if neglected it may start leaking oil.

Your Answer

Add photo

Related Questions

  • Noise on cold start 6 answers

    Recently purchased a 2003 VW Passat GLX 4 Motion for my teen driver. Have noticed that upon a cold start the car makes an unusual noise near the front of the engine. Lasts for only about a minute ...

    2003 Volkswagen Passat GLX 4Motion

    -

    Maintenance & Repair

  • There is this weird noise that is sort of like wistleing or like its rubbing somewhere. The noise comes from where the fan in located in the front. Noise is only on cold start. HELPP?/??? 3 answers

    There is this weird noise that is sort of like wistleing or like its rubbing somewhere. The noise comes from where the fan in located in the front. Noise is only on cold start. After a minute or two n...

    2006 Volkswagen Passat 2.0T

    -

    Maintenance & Repair

  • Cold Start/Noise 5 answers

    When the car is started after sitting over night or after sitting out in the cold for a short time it makes a funny noise. Almost like there is something caught in the fan. But the noise changes with ...

    2004 Volkswagen Jetta GLS 1.8T

    -

    Maintenance & Repair

  • whining noise 5 answers

    The car is a 2 litre Sport petrol version. When I change gear there is a whining noise from the engine. I also notice the noise when in gear but the engine is not pulling as the car is going down hil...

    2006 Volkswagen Passat 2.0T

    -

    Maintenance & Repair

  • Car won't start 7 answers

    I ahve a 2000 volkswagen passat with a manual transmission. Drove it and it ran fine. After work it started just fine only noticed that all of a sudden it didn't want to rev up like normal. While dr...

    2000 Volkswagen Passat GLX

    -

    Maintenance & Repair

Passat

Looking for a Used Passat in your area?

CarGurus has 24,994 nationwide Passat listings starting at $999.

ZIP:

Search Volkswagen Passat Questions

Volkswagen Passat Experts

#1 tenspeed
tenspeed
Reputation 1,290
#2 Tom Demyan
Tom Demyan
Reputation 1,180
#3 Chrisand Edwards
Chrisand Edwards
Reputation 1,090
View All

Related Models For Sale

Used Volkswagen Jetta
457 Great Deals out of 42,566 listings starting at $1,000
Used Honda Accord
947 Great Deals out of 77,739 listings starting at $899
Used Toyota Camry
1,101 Great Deals out of 90,760 listings starting at $1,599
Used Audi A4
294 Great Deals out of 10,505 listings starting at $1,200
Used BMW 3 Series
941 Great Deals out of 30,259 listings starting at $1,000
Used Nissan Altima
1,153 Great Deals out of 79,677 listings starting at $500
Used Honda Civic
812 Great Deals out of 88,108 listings starting at $1,299
Used Volkswagen GTI
99 Great Deals out of 7,260 listings starting at $2,400
Used Hyundai Sonata
820 Great Deals out of 46,091 listings starting at $1,000
Used Volkswagen Golf
57 Great Deals out of 3,635 listings starting at $1,600
Used Nissan Maxima
323 Great Deals out of 24,381 listings starting at $999
Used Volkswagen Touareg
45 Great Deals out of 2,665 listings starting at $2,900
Used Chevrolet Malibu
1,062 Great Deals out of 77,909 listings starting at $1,500

Used Cars For Sale

2017 Volkswagen Passat For Sale
5 Great Deals out of 15,124 listings starting at $13,977
2016 Volkswagen Passat For Sale
77 Great Deals out of 1,842 listings starting at $11,587
2015 Volkswagen Passat For Sale
69 Great Deals out of 2,570 listings starting at $7,900
2014 Volkswagen Passat For Sale
20 Great Deals out of 1,345 listings starting at $7,995
2013 Volkswagen Passat For Sale
26 Great Deals out of 1,079 listings starting at $5,950

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.