Have a Jeep with 4.7. Water pump went out and got hot.

Asked by Apr 07, 2016 at 09:29 PM about the 2006 Jeep Commander Limited 4X4

Question type: Maintenance & Repair

Replaced pump and thermostat.  Now still over heats.  tried to get out air
bubbles.  Lower rad hose is not hot but other hoses are hot.  Does not seem
to be losing coolant.  Could it be bad thermostat or put in wrong?  (friend put
in stat.)

3 Answers

235

Well coolant has to fill the radiator and run through the entire system, and of course the dreaded bleeding to insure no air. I recommend opening up the heater core by placing the interior switch and maximum heat, and then, with the vehicle running burp the system at its maximum filler point, whether radiator neck or filler reservoir, then add 50/50 mix as you give CPR to that "Lower Rad Hose," (squeeze it methodically). Also have a helper gently rev the motor and confirm that heat is coming through the vents. If you have heat in the cab, that's a sign that the system has flow, and hopefully by then that lower hose is hot! But remember that NEW thermostats can be quite resistant until they finally open. It is true...they often have some sort of threshold which must be superseded before they open up consistently. Just work it for a few minutes and keep an eye on that temperature gauge. That should do it my friend. But let me know how it works out!

1 out of 1 people think this is helpful.
1,660

If lower part of your radiator is not hot could mean your radiator is plugged and not allowing antifreeze thru to be cooled. A heater core can be hot and a radiator not be working at same time. They are two seperate systems of the cooling system. Sometimes radiators are restricted, car overheats, blows gaskets on water pump, etc and than we blame water pump when it was the radiator.

Tried several methods that have been suggested but none that worked. When we replaced water pump, there was a so-called "expert" there to help by replacing the thermostat for us. Who knew that you could put the thermostat in backwards!!!!! R&R Thermostat and everything seems normal. No damage to engine. Appreciate the suggestions.

Your Answer

Add photo

Related Questions

Commander

Looking for a Used Commander in your area?

CarGurus has 1,948 nationwide Commander listings starting at $2,495.

ZIP:

Search Jeep Commander Questions

Jeep Commander Experts

#1 Theresa Cheek
Theresa Cheek
Reputation 340
#2 Williams13
Williams13
Reputation 120
#3 ncorliss
ncorliss
Reputation 90
View All

Related Models For Sale

Used Jeep Grand Cherokee
844 Great Deals out of 68,670 listings starting at $864
Used Jeep Wrangler
393 Great Deals out of 19,082 listings starting at $3,000
Used Jeep Liberty
265 Great Deals out of 8,138 listings starting at $995
Used Jeep Patriot
325 Great Deals out of 36,282 listings starting at $2,366
Used Jeep Wrangler Unlimited
473 Great Deals out of 45,587 listings starting at $7,990
Used Jeep Compass
288 Great Deals out of 18,854 listings starting at $2,995
Used Chevrolet Tahoe
775 Great Deals out of 28,448 listings starting at $1,500
Used Dodge Durango
300 Great Deals out of 24,109 listings starting at $1,500
Used Toyota 4Runner
320 Great Deals out of 20,548 listings starting at $2,295
Used Ford Explorer
935 Great Deals out of 73,729 listings starting at $750
Used Ford F-150
2,693 Great Deals out of 211,512 listings starting at $1,000
Used Honda Pilot
461 Great Deals out of 19,638 listings starting at $599
Used Nissan Pathfinder
410 Great Deals out of 24,816 listings starting at $999

Used Cars For Sale

2007 Jeep Commander Limited 4X4 For Sale
6 Great Deals out of 86 listings starting at $5,950
2006 Jeep Commander Limited 4X4 For Sale
8 Great Deals out of 241 listings starting at $2,500