Topping up coolant

[Turismo07]

Originally Posted by Geo Jeep

No sign of coolant anywhere except just below the overflow pipe on the expansion tank. I think when it gets hot it's just coming out of the overflow.

I would agree with your diagnosis.

Especially given that your JK is running at 107 degrees and higher, in a hot climate.

I would def look into checking your entire cooling system to make sure its working properly.

Then look at upgrading the clutch fan to a aftermarket heavy duty item (I have part numbers if you need). Then as a priority look at fitting a aftermarket auto trans cooler (plenty of info on this forum). For everyone that has done these 2 mods at least on their auto JK's (and providing everything else is in good working order), they have no overheating issues even when towing.

Also check out the "Jeep JK Wrangler CRD Owners" facebook group, plenty of info there for JK CRD specific discussion. And it seems that every week is someone asking a cooling system related question, and its always auto JK's...

[Geo Jeep]

Thanks for the tips Turismo07, I'll get onto that FB Page and have a look.

Might be time to get an OBD2 reader as well.....

[ToryG]

i have a 2012 3.6 manual, coolant looks as tho it has not been changed, my coolant temps are around 103-107, do we think this is normal? also is there a product to change when the thermo fans come on and off?