Mikeruhls

When i sit with the truck on with the air on it overheats hasnt got to the point of overheating yet but the temp gauge goes up i just recharged the a/c dont know if that has anything to do with it also i do not know if the aux fan is working correctly it kicks on for maybe 5 seconds and kicks on verry often like every 30 seconds any help would be appreciated

93gc40

Is the condenser and raditor fins clear?

Mikeruhls

Yes they are clear

93gc40

What kind of vehicle: Make Model, year, motor, trans, miles - engine modification?

SpunksterXJ

Your auxiliary fan should only turn on about 217* or if your Ac is running. If your AC is running and still only an intermittent aux fan then I would check your relay.... As for overheating I would replace your thermostat. Could be stuck in a semi open state and not letting enough coolant flow through your engine.

freegdr

does it also do this with ac off?

djb383

Cooling system maintenance? When? What?

SlackJaw

I just did an overhaul of my cooling system and I'm having the same issue. I bought the 195* super stant thermostat, thinking of replacing it with a 180* one.

Today was about 95* outside and I was driving with the AC on, the temp on the dash gauge was above 210* almost the whole time (like 230*) doesn't overheat, but I would like it to be lower for peace of mind.

4n6pc

I had the exact same experience as slackjaw hope someone has an answer I pulled over for 20 minutes rather than risk overheating.

Mikeruhls

Yea it doesnt happen when the ac is off but i havnt let it sit too long wit the ac off so it still might im thinking my aux fan isnt working correctly is it supposed to only go on for a few to maybe 10 seconds then shut off?

djb383

Efan cycles with the a/c compressor.....may be low on refridgerant.

Mikeruhls

I have a 98 xj when i look up the thermostat on ebay theres 2 stant thermostats with diff part numbers does anyone know off hand what thermostat it is

golfmiser

Don't know how old yours is but I had the same problem on a '92. Fluids and thermostat was good the problem was the water pump. The fins or blades on the pump were worn down so much that the pump wasn't circulating the water fast enough to keep it cooled down. You don't notice it as bad going down the road. Mainly at idle where there is no air flow.