cherokeefan_1
NAXJA Forum User
- Location
- North idaho
2000 xj running hot. I have done a Spectra radiator from Napa, original was leaking. 2 coolant flushes that yielded nothing. Even the block behind water pump has no rust or scale, same with head. I installed a dealer water pump, dealer fan clutch, dealer thermostat, dealer radiator cap. I have tested for exhaust gases in cooling system 3 times. Pressure tested cooling system. Pressure tested radiator cap. Tried an 18 lbs cap and 16 lbs cap. I have now also tried the Napa 4 cylinder xj fan clutch. Also has a new belt. In slow traffic, stop n go, or sitting the temp creeps to 220 then the aux fan kicks on and brings it down to 214. With a/c on it goes up to 224 before I call it quits and turn heat on.
Now, with the 4 cylinder fan clutch the temp won't drop below 210 keeping a high idle, hood open, with heat on. At least with the dealer clutch I could get the temp down to 200 with just heat/high idle.
What I have noticed is the factory electric fan pulls more air through the front of the radiator than either of the clutch fans, at idle.
Oh, and this is a bone stock xj with 230k in super nice shape. Was well taken care of. I will try my factory 91 xj 3 core copper/brass radiator next as it did an ok job of cooling my 91.
Now, with the 4 cylinder fan clutch the temp won't drop below 210 keeping a high idle, hood open, with heat on. At least with the dealer clutch I could get the temp down to 200 with just heat/high idle.
What I have noticed is the factory electric fan pulls more air through the front of the radiator than either of the clutch fans, at idle.
Oh, and this is a bone stock xj with 230k in super nice shape. Was well taken care of. I will try my factory 91 xj 3 core copper/brass radiator next as it did an ok job of cooling my 91.