Just wondering what were some tricks to help my XJ run cooler. It is not over heating and the cooling sytems is in good shape.

 

csf 3 row radiator... never goes above 200

 

I just installed a 3-row all metal radiator i got from radiatorbarn.com, havent actually driven it yet but im sure it will be fine. The only times i had a cooling problem was when i was wheeling. but im sure with this new HD radiator it will be just fine. I also plan on doing a flush, and adding royal purple's coolant additive. they claim roughly a 20 degree diff in operating temp. so ill give that a try as well.

 

Mine was running near 220 at an idle even after a new CSF 3 row radiator...put in new fan clutch and now it never goes above 200. I could tell a huge difference in the amount of air moved with the new clutch.

 

stupid question, but what will it help to keep it running below 200?

 

nothing really on the street but when on the trail it will help keep it cooler when not moving or moving slower. anywhere under 220 to 230 is where you want it at any more and it will over heat on the trails

 

and remember if this is a street driver, the engine is designed, and the ecm is programed to work at a predertmined operating temp. just under 210. changing this can cause problems, mainly in emissions. kinda sucks for the cars i've had come in that didn't pass emissions, and they ended up paying a few hundred dollars to find out the thermostat they installed caused them to fail emissions.

it also effects fuel economy, and how well your heat works in winter. since all xj's always have rockin hot heat right

 

took mine for a spin a few minutes ago. temp stayed just below 210, very nice.

 

water wetter. available at all auto part stores. nascar uses it.

works for me too. also, new fan clutch and don't run a/c on the trail.

another thing i did, was hotwire the electric fan to a switch so i can turn it on while on the trail. i disconnected my a/c.

 

here is a couple wrightups on getting hot air out
HTH

http://www.myxj.net/blog/?p=15

http://www.cherokeetalk.com/forum/f2...nder-hood-480/

 

i built the back of my hood up one inch. Which helped but looks kinda funky. I also wired my electric to a switch and an open system radiator.

 

185 degree thermostat? any thoughts to that, anyone. why or why not? it should run cooler, right?

 

any problems lining up the hood or opening the hood after the spacer is installed?

 

So if one were to install a better radiator, would it effect the emissions so it wouldn't pass inspection? Or, are you only implying that just changing the thermostat would effect it.

 

I have one, and it's a double edged sword. I did an entire cooling system overhual. I have an 87, so it had the "closed" cooling system. I had MAJOR overheating issues, and wanted it FIXED!! I switched to the "open" 93+ radiator. I also put on a new water pump, hoses, t-stat housing, as well as a 185* t-stat. On the highway, it does not get over 160*, which from what I understand is NOT good. When I'm REALLY driving it in a off road situation that would induce overheating it will just touch 200*. So I would like to know what the trade off is?? Can you put a resistor on the sensor that will fool the Renny ECU to think it is at the right temp?? Sorry, not trying to hi-jack...