Question about 2004 Jeep Wrangler
Hi, if you have changed the above and you know they are working then did you do the following.
when you filled the coolant back up did you undo any bleed screws in the top hoses running around the top of the engine( if you have got none then its a self bleed system) you then need to undo these all the way if you have them, then just trickle the coolant in to prevent build up of air lock as this will cause over heating.
then when you have reached the coolant level you need to put the bleed screws back if you have them if not dont worry its self bleed system, once the level is reached you need to start the engine and leave the coolant filler cap off then wait until the temp is up to normal running temp then refit the coolant cap.
if after doing the above check you have got heat inside the jeep turn the heater on to full heat and turn it on if it comes out hot then this indicates the coolant is pumping around the engine properly, if its cold then you have some problems.
if its cold then this could point towards faulty thermostat, faulty water pump or worse case blown head gasket, if you have heat and it still over heats then you need to check if the rad fan is coming on when it gets hot if its electronic, miss this if its running all the time.
if its still over heating and the fan is working as it should be then you can only have 2 problems left, the first would be the water pump but if you have heat in the jeep from the heater then this points towards the pump working, so all thats left is the head gasket this could have failed and is a big cause of over heating problems.
let me know how you get on or if you need further assistance ok
plz rate this solution as i have a whole page of unrated posts, thanks
Posted on Aug 27, 2010
You may have the serpentine belt routed wrong and spinning the pump in the wrong direction its a very common problem. Check your belt routing.
Posted on Aug 27, 2010
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Posted on Jan 02, 2017
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