My vw passat heater blows cold air

Asked by leshutt Sep 29, 2013 at 07:19 AM about the 1999 Volkswagen Passat

Question type: Maintenance & Repair

The pump thermostst and radiator have been changed and heater core is ok. I,ve bied it
and the heater fan works fine

2 Answers

8,095

You may think the heater core is okay, but if someone used a quick-fix stop leak additive on that radiator prior to replacing it, the heater core may be clogged. Also, verify the heater control slider is actually working the bypass valve properly.

5 people found this helpful.
70

Scott is right, be sure to check both coolant lines for the heater core that they are equally hot. Burping all of the air out of the cooling system on your Passat is also a real challenge. Have you run the car through multiple heat/cool cycles?

2 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    Deathjam4
    Reputation
    4,470
  • #2
    Chrisand Edwards
    Reputation
    2,650
  • #3
    tenspeed
    Reputation
    2,420
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Volkswagen Jetta
58 Great Deals out of 1,817 listings starting at $1,295
Used Honda Accord
43 Great Deals out of 914 listings starting at $2,799
Used Toyota Camry
51 Great Deals out of 944 listings starting at $2,212
Used Honda Civic
162 Great Deals out of 3,375 listings starting at $2,230
Used Volkswagen Golf
22 Great Deals out of 426 listings starting at $3,991
Used Volkswagen Golf GTI
19 Great Deals out of 547 listings starting at $5,900
Used BMW 3 Series
71 Great Deals out of 1,191 listings starting at $1,995
Used Toyota Corolla
110 Great Deals out of 1,961 listings starting at $1,995
Used Audi A4
30 Great Deals out of 708 listings starting at $3,999
Used BMW 5 Series
22 Great Deals out of 323 listings starting at $4,500

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.