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

1,630

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 of 1 people found this helpful.
74,495

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

1 of 1 people found this helpful.
69,385

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 9,829 nationwide Grand Caravan listings starting at $2,499.

Postal Code:

Dodge Grand Caravan Experts

  • #1
    Tom Demyan
    Reputation
    2,680
  • #2
    dandyoun
    Reputation
    840
  • #3
    Dan Connell
    Reputation
    580
View All

Related Models For Sale

Used Chrysler Town & Country
40 Great Deals out of 630 listings starting at $3,000
Used Honda Odyssey
13 Great Deals out of 944 listings starting at $2,995
Used Toyota Sienna
20 Great Deals out of 1,009 listings starting at $2,500
Used Dodge Caravan
83 listings
Used Kia Sedona
7 Great Deals out of 471 listings starting at $3,995
Used Nissan Quest
57 listings starting at $5,495
Used Dodge Durango
62 Great Deals out of 1,013 listings starting at $2,998
Used Ford Explorer
45 Great Deals out of 1,364 listings starting at $3,900
Used Ford F-150
458 Great Deals out of 9,067 listings starting at $922
Used Chevrolet Tahoe
6 Great Deals out of 632 listings starting at $6,871
Used Ford Escape
223 Great Deals out of 5,228 listings starting at $1,495
Used Honda Pilot
14 Great Deals out of 839 listings starting at $2,900

Used Cars For Sale

2017 Dodge Grand Caravan For Sale
46 Great Deals out of 6,034 listings starting at $18,612
2016 Dodge Grand Caravan For Sale
51 Great Deals out of 1,167 listings starting at $11,226
2015 Dodge Grand Caravan For Sale
9 Great Deals out of 372 listings starting at $8,500
2014 Dodge Grand Caravan For Sale
14 Great Deals out of 518 listings starting at $6,495
2013 Dodge Grand Caravan For Sale
10 Great Deals out of 431 listings starting at $6,499

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.