Ongoing overheating 96 Cherokee, EVERYTHING Replaced (NEED HELP!)
09-02-2012, 02:19 PM
#46
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You never said you flushed it, run some coolant flush stuff prestone, bar, whatever, dump it in there let it run 20 mins once warm with the heater on full blast
Drain it, fill it with just water and repeat twice.
Then fill it with 50/50 or whatever you like.
If that does nothing then maybe the hoses are clogged. Maybe you need a new serp belt. Maybe you should double check your temp readings.
Is you aux fan kicking on?
Drain it, fill it with just water and repeat twice.
Then fill it with 50/50 or whatever you like.
If that does nothing then maybe the hoses are clogged. Maybe you need a new serp belt. Maybe you should double check your temp readings.
Is you aux fan kicking on?
09-02-2012, 02:21 PM
#47
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As I said earlier in the thread it may be a internal engine problem causing bad circulation or heat although I can't convince myself that your problem wouldn't be constant. Do you remember what the inside of some of the components you took of looked like? Thermostat housing,water pump. Or where they mounted looked like?
09-02-2012, 02:36 PM
#48
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Originally Posted by EZEARL
As I said earlier in the thread it may be a internal engine problem causing bad circulation or heat although I can't convince myself that your problem wouldn't be constant. Do you remember what the inside of some of the components you took of looked like? Thermostat housing,water pump. Or where they mounted looked like?
09-02-2012, 02:37 PM
#49
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Originally Posted by DieselD
You never said you flushed it, run some coolant flush stuff prestone, bar, whatever, dump it in there let it run 20 mins once warm with the heater on full blast
Drain it, fill it with just water and repeat twice.
Then fill it with 50/50 or whatever you like.
If that does nothing then maybe the hoses are clogged. Maybe you need a new serp belt. Maybe you should double check your temp readings.
Is you aux fan kicking on?
Drain it, fill it with just water and repeat twice.
Then fill it with 50/50 or whatever you like.
If that does nothing then maybe the hoses are clogged. Maybe you need a new serp belt. Maybe you should double check your temp readings.
Is you aux fan kicking on?
09-02-2012, 02:46 PM
#50
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wow man really sorry to hear about your issues here...
read all the way through and I agree it sounds like circulation, have you checked the radiator itself?? maybe the lady that owned it was talked into multiple bottles of stop leak??, maybe somethings in there ??? dunno,
I had a very similar (not exact) problem with my MJ years ago, turns out it was the O2 sensor... its a stretch... but.... I'm going with rad issues..
read all the way through and I agree it sounds like circulation, have you checked the radiator itself?? maybe the lady that owned it was talked into multiple bottles of stop leak??, maybe somethings in there ??? dunno,
I had a very similar (not exact) problem with my MJ years ago, turns out it was the O2 sensor... its a stretch... but.... I'm going with rad issues..
09-02-2012, 02:49 PM
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Originally Posted by DieselDaze
wow man really sorry to hear about your issues here...
read all the way through and I agree it sounds like circulation, have you checked the radiator itself?? maybe the lady that owned it was talked into multiple bottles of stop leak??, maybe somethings in there ??? dunno,
I had a very similar (not exact) problem with my MJ years ago, turns out it was the O2 sensor... its a stretch... but.... I'm going with rad issues..
read all the way through and I agree it sounds like circulation, have you checked the radiator itself?? maybe the lady that owned it was talked into multiple bottles of stop leak??, maybe somethings in there ??? dunno,
I had a very similar (not exact) problem with my MJ years ago, turns out it was the O2 sensor... its a stretch... but.... I'm going with rad issues..
09-02-2012, 03:00 PM
#53
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Here's something (digging deep again) that DieselDaze said that might have some merit to it: "maybe the lady that owned it was talked into multiple bottles of stop leak??"
Have you pulled the block drain plug by any chance?
Have you pulled the block drain plug by any chance?
09-02-2012, 04:28 PM
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Originally Posted by EZEARL
Here's something (digging deep again) that DieselDaze said that might have some merit to it: "maybe the lady that owned it was talked into multiple bottles of stop leak??"
Have you pulled the block drain plug by any chance?
Have you pulled the block drain plug by any chance?
09-02-2012, 05:21 PM
#56
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Same here although I tried for bit after grinding down a 3/8" drive extention but gave up due to lack of room. I do miss having a lifted vehicle for ease of working on.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
09-02-2012, 06:13 PM
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Same here although I tried for bit after grinding down a 3/8" drive extention but gave up due to lack of room. I do miss having a lifted vehicle for ease of working on.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
09-02-2012, 11:23 PM
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Same here although I tried for bit after grinding down a 3/8" drive extention but gave up due to lack of room. I do miss having a lifted vehicle for ease of working on.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
After reading all the replies to your thread a number of times it's really looking like an internal engine problem. Everything in the cooling system is new,all the parts are there,from what you could see of the water jackets they looked clean,and the coolant is staying clean. When you drive to long she wants to over heat. Something isn't letting the cooling system work. Partial blockage in the engine or some kind of internal damage is the only thing we can't eliminate at this point. HOPEFULLY someone will come up with something we've missed.
09-02-2012, 11:29 PM
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Originally Posted by Firestorm500
Look way back at my post #20
09-03-2012, 03:27 AM
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Original head cracked around #5 and #6 cylinder area. It did eventually have have white smoke.
The owner before me had overheating problems due to a cracked and leaking radiator that he never fixed. That probably cracked the head, which did not show up right away after I bought it. I cannot say that the engine ran hot after I replaced the radiator, because the cracked head problem manifested itself right afterwards.
The replacement used head had a weak rear freeze plug in it that was not replaced by the mechanic, because he didn't know it was weak. But the Jeep was running hot by that point, so in retrospect the plug, and the rubber replacements, were probably blowing from overheating and the resulting overpressure.
During all this there was never oil in the coolant or coolant in the oil.
The head gaskets were never blown with either head.
In both cases, the problem was internal in the head. We found the cracks in the first one after it was pulled.
As I mentioned in #20, no one ever saw the actual internal cracks in the other head. But head # 3 cured my problem. So there was definitely something wrong with #2.
There are a lot of things that can cause overheating, as you can see on this forum. But you have done about all the obvious, as I did.
I can't say with certainty that if you replaced your head, the overheating will go away. But what else is there left to do?
I think if I had to do it all over again, I would buy a brand new head from Carolina head suppliers. The possible hassle of a used head is just not worth it.
The owner before me had overheating problems due to a cracked and leaking radiator that he never fixed. That probably cracked the head, which did not show up right away after I bought it. I cannot say that the engine ran hot after I replaced the radiator, because the cracked head problem manifested itself right afterwards.
The replacement used head had a weak rear freeze plug in it that was not replaced by the mechanic, because he didn't know it was weak. But the Jeep was running hot by that point, so in retrospect the plug, and the rubber replacements, were probably blowing from overheating and the resulting overpressure.
During all this there was never oil in the coolant or coolant in the oil.
The head gaskets were never blown with either head.
In both cases, the problem was internal in the head. We found the cracks in the first one after it was pulled.
As I mentioned in #20, no one ever saw the actual internal cracks in the other head. But head # 3 cured my problem. So there was definitely something wrong with #2.
There are a lot of things that can cause overheating, as you can see on this forum. But you have done about all the obvious, as I did.
I can't say with certainty that if you replaced your head, the overheating will go away. But what else is there left to do?
I think if I had to do it all over again, I would buy a brand new head from Carolina head suppliers. The possible hassle of a used head is just not worth it.
Last edited by Firestorm500; 09-03-2012 at 03:33 AM.