Question about Jeep Cherokee

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Replaced the head gasket,thermostat,spark plugs,coolant,oil/filter,pcv valve.Started to run hot so had a coolant flush done,changed the water pump,still seems to be running hot had to run my heater on high to get it to cool down.Frustrated do not know what to change/check/replace next..somone told me there are to waterpumps for that is this true?On a 1993 Jeep Cherokee not Grand like everyone wants to believe it is when buying my parts.Its a Jeep Cherokee Country,4.0 liter,in-line 6

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  • jennifer Jul 21, 2009

    I flushed the radiator,changed waterpump,still running hot,do you think it could be the radiator itself?Thats the only thing left,oh i doubt that.Ha!Ha! Its really becoming a living nightmare

  • jennifer Jul 21, 2009

    And another thing its not a Grand Cherokee,Its a 1993 Jeep Cherokee Country.4.0liter 243 cubic inch ????? I have put over a thousand into replacing the headgasket to find out i needed a new head,then still ran hot replaced tha waterpump,flushed radiator now the problem is still there.

  • jennifer Jul 28, 2009

    Thank you for your insight,we have a new radiator we are installing.Hopefully thats the solution to my running hot problem.We have replaced almost everything possible so wish me luck.Again Thank You,jennyj64

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Also - be sure the radiator fans are working properly.

If the system has air in it (from the pump replacement) you will experience overheating.

To purge the air:
Operate the engine with the heater control valve in the HEAT position until the thermostat opens to purge air from the system. Check coolant level and fill as required.

Some 4.0s use a serpentine drive belt and have a reverse rotating water pump coupled with a viscous fan drive assembly. The components are identified by the words REVERSE stamped on the cover of the viscous drive and on the inner side of the fan. The word REV is also cast into the body of the water pump.

Make sure you have the correct pump!! (there are 2 pumps - however you have one or the other - not BOTH).

There is only 1 water pump on the vehicle.


Lastly - overheating can be caused by a lack of pressure due to a leak or air entering the system. Pressure check the radiator, cap, and check the overflow container hose to verify there is no leak/crack.

Thanks for using FixYA!!

Posted on Jul 28, 2009

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A faulty water pump can cause some serious damage to the engine of your Jeep Grand Cherokee. There is only one pump in there. Now get the radiator and radiator fan checked.

Let me know

Thanks
Smith

Posted on Jul 21, 2009

  • Shereena M Smillan
    Shereena M Smillan Jul 21, 2009

    Also check if the coolant level steady, Else the head gasket might have some issue.
    You have changed almost all the things which can cause over heat. Check if the heat indicator in the dashboard is showing the correct value.

    Let me know
    Thanks
    Smith



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