Jeep 4L overheating

Asked by Greygold Jun 27, 2016 at 02:12 PM about the 2003 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

Ok. My 2003 jeep GC radiator blew!  
Replaced it. Ran fine for a week & then
started overheating. Replaced thermostat ,
fan sensor , temp sensor , it will peg out
260degrees & then come back down. Or if
it doesn't I shut it off for just 2min & it's at
210... Sometimes will peg HOT &
comeback down by itself. No leaks. I did
notice one time the Top hose was
collapsed , I ck'd the tube from radiator to
overflow tank it's clear!!  Ugh ! Did I cook
the heads? Water pump ?  No leaks or
notices.  Help please !

2 Answers
290

Ricky answered 7 years ago

First thing top hose cannot be collapsing. Then for its stil running hot pull plugs out see if they hav water on them figure out what bank it is that's having problems Then if it is water on a plug r plugs means cracked head or blown head gasket usually if head is cracked car mixes water n oil and runs like shit if at all. If wpump was bad top hose wouldn't be collapsing so no u hav head problems That engine is very bad about head gaskets blowing I have done so many I can change both in 6 hours and u back driving so not a big deal. Costly tho

1 people found this helpful.
Mark helpful
70,105

Kelly answered 7 years ago

but is it hot? is the sending unit ok/replaced? did you bleed the air out of the system? and the top or bottom hose can collapse...is the a coil springs in them?

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Jeep 4L overheating 2 Answers

    Ok. My 2003 jeep GC radiator blew! Replaced it. Ran fine for a week & then started overheating. Replaced thermostat , fan sensor , temp sensor , it will peg out 260degrees & then come back down. ...

    2003 Jeep Grand Cherokee Laredo

    -

    Maintenance & Repair

  • Jeep Overheating 1 Answer

    I noticed my jeep said low coolant the other day so I went out a bought so a day later. The low coolant signal went off but my car is still overheating. I just got a new water pump earlier this yea...

    1999 Jeep Grand Cherokee Laredo

    -

    Maintenance & Repair

  • Jeep overheating 5 Answers

    Hi I have a 2007 Jeep Grand Cherokee and it was overheating first to put a water pump on it then I put a radiator in it then I took the thermostat out it ran fine for about 4 days . Then I drove...

    2007 Jeep Grand Cherokee Laredo

    -

    Maintenance & Repair

  • Jeep overheating 1 Answer

    I have a 2002 jeep grand Cherokee laredo 4.7 and I have changed out the entire cooling which is the fan assembly and solenoid, water pump, thermostat, and the radiator itself and it still overheat...

    2002 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • Jeep Grand Cherokee Overheating 10 Answers

    I have a 2001 Jeep Grand Cherokee, and it over heats when I drive, but not at idle. I have notice when it's overheating that the top hose is extremely pressurized. But the weird thing is that I d...

    2001 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

Shortcuts

Search Jeep Grand Cherokee Questions

CarGurus Experts

  • #1
    Hornet_2497
    Reputation
    8,800
  • #2
    Gene Arnett
    Reputation
    6,960
  • #3
    thejeepdoctor
    Reputation
    6,470
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Dodge Durango
55 Great Deals out of 1,851 listings starting at $6,987
Used Jeep Wrangler
139 Great Deals out of 5,907 listings starting at $2,995
Used Ford F-150
319 Great Deals out of 13,568 listings starting at $3,888
Used Ford Explorer
61 Great Deals out of 1,843 listings starting at $6,990
Used Toyota 4Runner
22 Great Deals out of 521 listings starting at $14,995
Used Chevrolet Tahoe
16 Great Deals out of 785 listings starting at $7,499
Used Chevrolet Silverado 1500
170 Great Deals out of 7,410 listings starting at $6,995
Used Chevrolet Camaro
17 Great Deals out of 467 listings starting at $11,999

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.