Little to no heat in 2001 XJ
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Year: 2001
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Little to no heat in 2001 XJ
Hey I have been scanning the forums for threads that could help, but I decided to post finally.
My fiancee has a 2001 XJ, and it has very little heat coming out of it. About a month or two ago we found out that she was driving with no anti-freeze. The short version of that story is that the Jeep's temp gauge started to randomly jump and then go back to normal, then finally she was driving home one night and finally smoke came out from under the hood on the passenger's side. I assume that the antifreeze that was left came out of the overflow reservoir and hit the engine block and smoked up. The remaining antifreeze was rust orange and had the consistency of whipped cream.
Anyway, I replaced the thermostat and flushed the cooling system with just water to try and get it cleared out before I put in new antifreeze, but the water was still rust orange after 10 minutes so I left it at that since I thought I would play with it again in the spring when it wasn't so friggin cold, and I don't have a garage. Regardless, the overheating problem was fixed.
Now before I did anything with the overheating problem we knew she had little to no heat. Just today I tried to run water through the heater core backwards using a drill pump since I thought that the whipped orange antifreeze could be plugging it, and it seemed to work. In fact, I was able to blow out the liquid from the hot side to the cold side when I was done.
However, there has been no improvement with the heat. One other thing I noticed is that only the hose from the thermostat is hot the other is not. I don't think it is a blocked heater core since I was able to blow out the water. My next step is just to run some actual flush through the heater core just to be sure there aren't any blockages.
I will be honest in that I am somewhat of a newbie when it comes to auto repair, but I actually enjoy working on the Jeep since it isn't sitting in front of computer which I do for my job. Although this month has been pretty brutal with the wind. If anyone has any suggestions on what to do to get the heat working again I am open to them.
My fiancee has a 2001 XJ, and it has very little heat coming out of it. About a month or two ago we found out that she was driving with no anti-freeze. The short version of that story is that the Jeep's temp gauge started to randomly jump and then go back to normal, then finally she was driving home one night and finally smoke came out from under the hood on the passenger's side. I assume that the antifreeze that was left came out of the overflow reservoir and hit the engine block and smoked up. The remaining antifreeze was rust orange and had the consistency of whipped cream.
Anyway, I replaced the thermostat and flushed the cooling system with just water to try and get it cleared out before I put in new antifreeze, but the water was still rust orange after 10 minutes so I left it at that since I thought I would play with it again in the spring when it wasn't so friggin cold, and I don't have a garage. Regardless, the overheating problem was fixed.
Now before I did anything with the overheating problem we knew she had little to no heat. Just today I tried to run water through the heater core backwards using a drill pump since I thought that the whipped orange antifreeze could be plugging it, and it seemed to work. In fact, I was able to blow out the liquid from the hot side to the cold side when I was done.
However, there has been no improvement with the heat. One other thing I noticed is that only the hose from the thermostat is hot the other is not. I don't think it is a blocked heater core since I was able to blow out the water. My next step is just to run some actual flush through the heater core just to be sure there aren't any blockages.
I will be honest in that I am somewhat of a newbie when it comes to auto repair, but I actually enjoy working on the Jeep since it isn't sitting in front of computer which I do for my job. Although this month has been pretty brutal with the wind. If anyone has any suggestions on what to do to get the heat working again I am open to them.
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I am pretty sure I did put in right, but even if I did put it in wrong wouldn't the hose going to the heater core from the thermostat be cold once it was up to running temp?
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is the upper radiator hose getting hot or just the lower hose?The heater hose is on the out side of the tstat,the water in the block heats up, then the tstat opens when its at temp to let the water flow all the way through the system.
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I just went out to check and the upper radiator hose is getting hot as well as the hose coming from the thermostat going to the heater core. I am pretty sure that the thermostat is fine since we haven't had any overheating issue since I replaced it.
The funny thing is that the hose returning from the heater core to the block(the bottom hose) seemed to warm up as well this time. A few hours ago it didn't seem to (unless my fingers were numb from the cold).
The funny thing is that the hose returning from the heater core to the block(the bottom hose) seemed to warm up as well this time. A few hours ago it didn't seem to (unless my fingers were numb from the cold).
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may have been some build up of crud that finally broke loose,when you get the chance do a real good flush of the whole system,when you did the enisciel work stuff may have broken loose
#7
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Ok I thought so, I am just going to have to wait for a day where it isn't cold enough to freeze my nuts to the fender.
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Year: 1996
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Engine: 4.0 HO
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Year: 2001
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I keep seeing things about a blend door, but I am going for the easiest stuff first.
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Year: 1996
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The heater control valve is under the hood, not in the dash. Here's a pic, in on the passenger side located above the dipstick. It's got four heater hoses that run into it.
https://www.cherokeeforum.com/attach...lve_leak_1.jpg
https://www.cherokeeforum.com/attach...lve_leak_1.jpg