Jeep 4L overheating

Asked by 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

60

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 of 1 people found this helpful.
25,505

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 of 1 people found this helpful.

Your Answer

Add photo

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

  • 98 jeep grand carokee laredo overheating 1 answer

    overheating

    1998 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • Jeep Grand Cherokee Overheating 15 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

  • 2000 Jeep Grand Cherokee overheating 1 answer

    I have a 2000 Jeep grand Cherokee 4.0 that is overheating. Thermostat seems to be working but the fan is not. What can cause it to overheat do I need to replace the electric fan?

    2000 Jeep Grand Cherokee Laredo

    -

    Maintenance & Repair

  • 2003 Jeep Grand Cherokee Overheating When Idling? 2 answers

    Hi, I'm a 32 year old female so please bear with me as I am probably not as mechanically inclined as most guys! I have a 2003 Jeep Grand Cherokee Lerado. It does not have a towing package. Last summ...

    2003 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 2,060
#2 Tom Demyan
Tom Demyan
Reputation 1,840
#3 thejeepdoctor
thejeepdoctor
Reputation 1,750
View All

Related Models For Sale

Used Jeep Wrangler
262 Great Deals out of 16,543 listings starting at $2,590
Used Ford Explorer
931 Great Deals out of 70,253 listings starting at $997
Used Toyota 4Runner
258 Great Deals out of 19,021 listings starting at $2,500
Used Dodge Durango
268 Great Deals out of 21,293 listings starting at $1,499
Used Chevrolet Tahoe
558 Great Deals out of 31,371 listings starting at $1,500
Used Ford F-150
2,059 Great Deals out of 207,339 listings starting at $1,499
Used Chevrolet Silverado 1500
1,765 Great Deals out of 181,201 listings starting at $250
Used BMW X5
449 Great Deals out of 15,733 listings starting at $2,800
Used Jeep Liberty
258 Great Deals out of 7,310 listings starting at $991
Used Chevrolet Camaro
243 Great Deals out of 31,194 listings starting at $369

Used Cars For Sale

2017 Jeep Grand Cherokee Laredo For Sale
7 Great Deals out of 2,933 listings starting at $21,390
2016 Jeep Grand Cherokee Laredo For Sale
3 Great Deals out of 279 listings starting at $19,991
2015 Jeep Grand Cherokee Laredo For Sale
193 listings starting at $18,995
2014 Jeep Grand Cherokee Laredo For Sale
175 listings starting at $15,704

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.