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I am going to be replacing my radiator and waterpump tomorrow but I want to flush out the system as well. What is the best way for me to do this, with the old rad still in and then just swap in the new rad?
**** UPDATE ****
I replaced the mechanical fan clutch, and my problem still persist. The thing that confuses me is that it's not a gradual heat increase, it will be sitting at the correct temp and then just spike suddenly? It usually sits at the first red warning line and then just drops off?
The jeep is new to me and the PO said something about having the cooling system flushed. The fluid levels are fine.
Good info on the heater core bypass I will def look into that. How would I check for a vaccum leak?
Sorry, Canadian temps... 210 for you guys equals 100 celsius for me.
So, it runs just slightly higher than 210 on the hwy at all times. In stop and go traffic it will jump up to 250 (the first orange line) but will never get to the second orange line which would be 260. It will sit at 250...
1999 XJ, 4.0.
Normally the truck temperature runs exactly in the middle at 100 but will sometimes spike up to 120 but will not go all the way to 125?
This ONLY happens when I'm in the city in stop and go traffic. It will NEVER occur when I'm on the highway.
When it gets hot like that I...
No, the jeep seems to reach normal op temp in the correct time. The AC condensor is infront of the radiator correct? I believe the hissing is coming from there... again I'm so green when it comes to anything HVAC, cooling, etc... thanks for the help guys.
The hose in the picture comes out of the firewall and then has a 90 degree turn facing the ground. This hose does not hiss, it only has a constant flow of air coming out of it when the engine is on... My thinking is that potentially this was affecting my vaccum system and is partially to blame...
Hisses when on and then for about 20 seconds when off and only happens once the engine heats up. I believe my radiator has a small leak.
But, as you can see in the pictures that hose leads to nothing and blows constant air out only while running
Sry, 1999 XJ, 4.0L, 160,000 kms (100,000 miles)
I also noticed that there is a hose that comes out on the lower passenger side of the firewall in the engine bay and it is constantly shooting air? Is this normal? I've never noticed it before... I can snap a pic later if it helps.
Im hearing a hissing noise coming I believe the radiator... I'm having all sorts of issues right now with the system and I'm completely green when it comes to cooling.
My issues:
- heat takes forever inside the cab
- hissing sound
- noticing small ammounts of coolant leak
I want to revamp...