2009 Jetta overheating issues

30

Asked by Sarah May 21, 2019 at 11:01 PM about the 2009 Volkswagen Jetta SE

Question type: Maintenance & Repair

Back story: My 2009 Vw Jetta began overheating
at idle, and cooled down as long as I was moving.
I’d hear my fans going So assumed those were
fine. The temperature gauge would only slightly go
up. So, I let it be for about 6 months when I
eventually started losing coolant so brought it to
the mechanic and he replaced the water pipe. I
haven’t had any leaks or loss of coolant since. I
drove off from the mechanic and later that day I
noticed  the temperature gauge started creeping
again only at idle. Like most of the problems in my
life, I ignored it. And flash forward to today(about a
year later). It overheats at about a mile driving
down the road. Still no coolant leaks.
My uncle and step dad work on cars in their spare
time and just so happen to have some spare time.
They replaced the thermostat and flushed the
radiator. The thermostat had a lot of rusty gunk. At
some point through all of this they did some kind
of test with the water pump and it appeared to be
functioning. They probably should’ve have just
done the water pump as well but we’ve been trying
to go the least expensive route. And it’s still
overheating. :(


When googling answers the one specific to my
cars symptoms says the cooling fans. But I can
hear mine running. They even stay on about 5-10
min after I turn my car off and then they shut off.
(Which I have read is typical)
Is it possible they just aren’t running efficiently?
And if so what all would I need to replace?

3 Answers

30

Update: the water pump was definitely bad. Replaced water pump, thermostat, and coolant adapter. Still overheating when driving down the road. Hoping we just need to bleed air out but still having issues. Any ideas would be greatly appreciated. *Both fans are functioning and no apparent leaks*

3 people found this helpful.
20

Check in front of your radiator to verify that no items(leaves or plastic) have built up. If you radiator is partially blocked your car will start to overheat when you slow down or idle the vehicle. Last, verify that the coolant that you are using is designed for VW vehicles. If not, some coolants will actually damage your coolant system including blocking your heater coil.

2 people found this helpful.
20

Change your heater core percent I have the same problem and I finally found the problem HEATER CORE. Clogged heater core thank god. Replace and I spend $ 70.00 dollars on G12 antifreeze the cars run perfect doesn't overheat anymore I went to ebay toget the heater core 58.00 dollar . I did the job my self so if u a mechanic and know how to do it heater core a 2009 or on any Volkswagen from 2005 up heater core is under dash by the steering wheel it's pretty uncomfortable but it's better than pain a large amount of money approximately cost of this job will be around almost $400 that is not including parts if you're having this issue I am sure that is your heater core hopefully I'll help people that were in my situation

2 people found this helpful.

Your Answer:

Jetta

Looking for a Used Jetta in your area?

CarGurus has 1,896 nationwide Jetta listings starting at $995.

Postal Code:

CarGurus Experts

  • #1
    Deathjam4
    Reputation
    12,620
  • #2
    Goodwrench707
    Reputation
    5,410
  • #3
    o_jayne
    Reputation
    2,680
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Volkswagen Passat
16 Great Deals out of 402 listings starting at $4,700
Used Volkswagen Jetta GLI
3 Great Deals out of 383 listings starting at $5,499
Used Honda Civic
180 Great Deals out of 3,705 listings starting at $1,995
Used Honda Accord
40 Great Deals out of 910 listings starting at $1,599
Used Toyota Camry
52 Great Deals out of 985 listings starting at $2,212
Used Toyota Corolla
108 Great Deals out of 2,035 listings starting at $2,795
Used Volkswagen Golf
26 Great Deals out of 444 listings starting at $3,987
Used Volkswagen Tiguan
76 Great Deals out of 2,855 listings starting at $4,934
Used Mazda MAZDA3
74 Great Deals out of 1,510 listings starting at $2,495
Used Hyundai Elantra
163 Great Deals out of 3,544 listings starting at $2,995
Used Nissan Altima
22 Great Deals out of 716 listings starting at $1,400
Used Volkswagen Golf GTI
25 Great Deals out of 608 listings starting at $4,900
Used BMW 3 Series
71 Great Deals out of 1,176 listings starting at $1,995
Used Audi A4
43 Great Deals out of 698 listings starting at $4,750
Used Nissan Sentra
77 Great Deals out of 1,812 listings starting at $2,195

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.