Radiator fans won't turn on on high with A/C on.

Asked by Jun 09, 2014 at 04:16 PM about the 2010 Volkswagen Jetta TDI

Question type: Maintenance & Repair

I replaced RCV and the low fans turn on, hi and low side lines are at ambient temperature. A/C clutch runs all the time even with A/C set to off. I unplugged the coolant temperature sensor located on a radiator hose and and I started the engine and the high fans turn on. A/C was serviced evacuated and recharged.

1 Answer

4,395

If the hi and low side refrig lines are ambient temp, you aren't compressing refrigerant. It appears the fan motors are fine as is the temp sensor. Be certain the A/C clutch is actually engaging the compressor. It may be a relay problem there or the actual compressor. Starting to sound like time for some professional help.

Your Answer

Add photo

Related Questions

Search Volkswagen Jetta Questions

Volkswagen Jetta Experts

#1 FordNut
FordNut
Reputation 2,120
#2 Goodwrench707
Goodwrench707
Reputation 1,990
#3 Deathjam4
Deathjam4
Reputation 1,310
View All

Related Models For Sale

Used Volkswagen Passat
219 Great Deals out of 20,395 listings starting at $1,700
Used Volkswagen GTI
121 Great Deals out of 6,019 listings starting at $2,299
Used Honda Civic
1,042 Great Deals out of 62,661 listings starting at $1,500
Used Volkswagen Golf
32 Great Deals out of 2,883 listings starting at $2,223
Used Honda Accord
1,079 Great Deals out of 74,911 listings starting at $969
Used BMW 3 Series
1,610 Great Deals out of 38,816 listings starting at $1,250
Used Toyota Corolla
1,168 Great Deals out of 65,462 listings starting at $1,399
Used Toyota Camry
1,289 Great Deals out of 96,928 listings starting at $999
Used Audi A4
314 Great Deals out of 12,449 listings starting at $2,000
Used Volkswagen Beetle
227 Great Deals out of 8,086 listings starting at $1,500
Used Nissan Altima
972 Great Deals out of 82,386 listings starting at $1,795
Used Volkswagen Jetta SportWagen
20 Great Deals out of 364 listings starting at $4,000
Used Mazda MAZDA3
402 Great Deals out of 26,599 listings starting at $1,999
Used Volkswagen CC
84 Great Deals out of 3,428 listings starting at $5,495
Used Ford Focus
1,109 Great Deals out of 57,193 listings starting at $1,395

Used Cars For Sale

2014 Volkswagen Jetta TDI For Sale
24 listings starting at $16,950
2013 Volkswagen Jetta TDI For Sale
6 listings starting at $16,784