With heater on highest setting, the engine sometimes knocks loudly. Had radiator flushed last year, blows hot, then very hot and engine starts knocking. Any suggestions?

20

Asked by Dec 05, 2015 at 07:31 PM about the 2006 Dodge Grand Caravan SXT

Question type: Maintenance & Repair

After letting engine cool down and lowering temperature control to a little over
half way, van runs ok.  Could the heater core be the culprit?

4 Answers

115,565

Check your thermostat. It may be sticking closed.

122,725

You flushed the radiator on the inside, give the outside fins a really good deep cleaning, check to make sure your cooling fan in coming up to speed...

2 people found this helpful.
20

Would a stuck thermostat cause the engine to "Knock" loudly?

1 people found this helpful.
20

Finally located problem....bad a/c compressor clutch. When engine started knocking/clanking, I pressed the a/c "On" button and noise stopped. Turning "Off" a/c , noise would begin again! Verified by local dealership. Now the repair job will total roughly $870 before taxes!!

1 people found this helpful.

Your Answer:

Grand Caravan

Looking for a Used Grand Caravan in your area?

CarGurus has 29,626 nationwide Grand Caravan listings starting at $1,900.

ZIP:

Dodge Grand Caravan Experts

  • #1
    Tom Demyan
    Reputation
    3,160
  • #2
    dandyoun
    Reputation
    1,090
  • #3
    Dan Connell
    Reputation
    680
View All

Related Models For Sale

Used Chrysler Town & Country
275 Great Deals out of 12,392 listings starting at $1,550
Used Honda Odyssey
446 Great Deals out of 34,629 listings starting at $1,200
Used Toyota Sienna
246 Great Deals out of 24,020 listings starting at $1,495
Used Chrysler Pacifica
126 Great Deals out of 27,172 listings starting at $2,000
Used Dodge Caravan
412 listings
Used Kia Sedona
150 Great Deals out of 8,365 listings starting at $1,850
Used Dodge Durango
341 Great Deals out of 25,605 listings starting at $1,750
Used Nissan Quest
44 Great Deals out of 2,258 listings starting at $2,300
Used Ford Explorer
884 Great Deals out of 70,422 listings starting at $1,275
Used Ford F-150
2,362 Great Deals out of 199,220 listings starting at $1,300
Used Honda Pilot
346 Great Deals out of 46,165 listings starting at $750
Used Ford Escape
1,222 Great Deals out of 111,617 listings starting at $1,995
Used Chevrolet Tahoe
662 Great Deals out of 38,329 listings starting at $995

Used Cars For Sale

2018 Dodge Grand Caravan SXT For Sale
1,529 listings starting at $18,999
2017 Dodge Grand Caravan SXT For Sale
59 Great Deals out of 5,022 listings starting at $12,991
2016 Dodge Grand Caravan SXT For Sale
4 Great Deals out of 1,674 listings starting at $9,994
2015 Dodge Grand Caravan SXT For Sale
415 listings starting at $7,500
2014 Dodge Grand Caravan SXT For Sale
7 Great Deals out of 611 listings starting at $4,800

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.