Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: jond on November 07, 2010, 12:16:51 AM

Title: coolant change
Post by: jond on November 07, 2010, 12:16:51 AM

with winter approaching i thought i might change the antifreeze mixture on my 2002 ,2.4 petrol cherokee,any one know if there is a drain plug,also when changed what is the best method to bleed the system so i dont get any airlocks,cheers

Title: Re: coolant change
Post by: bonza on November 08, 2010, 10:13:15 AM

this how I do it tom TJ wrangler

remove bottom radiator hose where it connects to the radiator and let drain. (much easier than drain plug in engine block)
remove coolant temp sensor from the stat housing
flush radiator with a garden hose via the radiator filler neck and the engine block via the sensor hole
reconnect bottm hose and refill radiator until a trickle flows out from the sensor hole in order to burp out any trapped air in the head.
refit temp sensor and top up radiator. also squeeze top hose so that any entrapped air is squeezed out

Title: Re: coolant change
Post by: jond on November 08, 2010, 07:54:28 PM

cheers,ill have a go this week

Title: Re: coolant change
Post by: doublej on November 10, 2010, 07:04:12 PM

is there not a drain cock on the bottom of the rad - alittle white plastic wing nut looking thing?

Title: Re: coolant change
Post by: jond on November 10, 2010, 08:14:51 PM

i think there is a drain tap at bottom of radiator,also dont want to sound a complete novice but where is the coolent sensor located,cheers

Title: Re: coolant change
Post by: bonza on November 10, 2010, 09:32:51 PM

There is a drain plug on the bottom of the radiator but is easier to drop off the bottom hose and this allows the block to be flushed out easier and more thorough (at least on a TJ) and the sensor is on the stat housing