building up radiator pressure and blowing radiator, upper hose very hard. Replaced water pump, thermostat and now third radiator. What could be the cause?

Asked by Jun 13, 2017 at 10:17 PM about the 2002 Dodge Grand Caravan 4 Dr Sport Passenger Van Extended

Question type: Maintenance & Repair

3 Answers


leaking headgasket is my first bet. If your radiator is over- pressurizing, check fluid levels. When does it blow? When idle? When at higher RPMs?

1 people found this helpful.

Replace the radiator cap in case it is holding too much pressure.

1 people found this helpful.

Yes, the radiator cap is like a safety valve. It should blow off the excess pressure long before the radiator blows apart! Usually around 16 PSI. HTH. -Jim

Your Answer:

Grand Caravan

Looking for a Used Grand Caravan in your area?

CarGurus has 27,633 nationwide Grand Caravan listings starting at $1,488.


Dodge Grand Caravan Experts

  • #1
    Tom Demyan
  • #2
  • #3
    Dan Connell
View All

Related Models For Sale

Used Chrysler Town & Country
245 Great Deals out of 11,610 listings starting at $1,999
Used Toyota Sienna
252 Great Deals out of 24,432 listings starting at $1,250
Used Honda Odyssey
395 Great Deals out of 31,655 listings starting at $1,200
Used Dodge Caravan
428 listings starting at $950
Used Kia Sedona
121 Great Deals out of 8,327 listings starting at $1,695
Used Dodge Durango
363 Great Deals out of 25,679 listings starting at $1,200
Used Ford Explorer
880 Great Deals out of 71,201 listings starting at $495
Used Nissan Quest
65 Great Deals out of 2,241 listings starting at $1,999
Used Ford F-150
2,235 Great Deals out of 188,247 listings starting at $1,200
Used Ford Escape
1,220 Great Deals out of 98,386 listings starting at $1,000
Used Chevrolet Suburban
280 Great Deals out of 21,144 listings starting at $1,950

Used Cars For Sale

2018 Dodge Grand Caravan For Sale
6 Great Deals out of 8,853 listings starting at $16,038
2017 Dodge Grand Caravan For Sale
116 Great Deals out of 7,259 listings starting at $12,991
2016 Dodge Grand Caravan For Sale
17 Great Deals out of 2,740 listings starting at $7,799
2015 Dodge Grand Caravan For Sale
21 Great Deals out of 1,172 listings starting at $6,995
2014 Dodge Grand Caravan For Sale
32 Great Deals out of 1,564 listings starting at $5,490

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.