banshee Posted July 24, 2011 Share Posted July 24, 2011 Anyone ever tried to put a larger radiator in the front of an MJ? or should I just relocate it into the bed? 220deg F plus is unacceptable, 35mph or above on the open road seems to be fine feedback requested/ advice required... B... Link to comment Share on other sites More sharing options...
64 Cheyenne Posted July 24, 2011 Share Posted July 24, 2011 After taking a close look the information you provided I suggest you buy a new truck cause that one is.... Link to comment Share on other sites More sharing options...
jimoshel Posted July 24, 2011 Share Posted July 24, 2011 A properly functioning MJ cooling system is capable of cooling the engine in any situation. You have a problem with something in the system. Find it and fix it. Don't go using a 'Presidential solution' on it. Link to comment Share on other sites More sharing options...
AMCJeepMJ Posted July 24, 2011 Share Posted July 24, 2011 Relocate the radiator to the bed? Did I read that right? If you do it, I insist upon pictures being posted. Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 24, 2011 Share Posted July 24, 2011 Anyone ever tried to put a larger radiator in the front of an MJ?or should I just relocate it into the bed? 220deg F plus is unacceptable, 35mph or above on the open road seems to be fine feedback requested/ advice required... B... Topic: question Advice required: Piss off mate. Link to comment Share on other sites More sharing options...
87Warrior Posted July 24, 2011 Share Posted July 24, 2011 I was having overheating issues in my 4.0L TJ. It was running 220-230 on the highway whenever the temps hit 90 degrees outside. Replaced the cooling system, piece by piece and performed countless flushes. Water pump, thermostat, radiator cap, hoses replaced. Installed a Griffin radiator and it does not get hot at all, even in this 115 degree heat. Link to comment Share on other sites More sharing options...
Sir_Brando Posted July 24, 2011 Share Posted July 24, 2011 mine was fixed in just one radiator flush. might fix your problem. pretty cheap diagnosis Link to comment Share on other sites More sharing options...
Geonovast Posted July 24, 2011 Share Posted July 24, 2011 There is nothing wrong with 220 deg. 210 is "perfect" operating temp for these motors. Cooler does not always mean it's running better. Link to comment Share on other sites More sharing options...
cody4359 Posted July 24, 2011 Share Posted July 24, 2011 hmmm seems like CC is getting a few D-bags on here now (talking about the 2 old farts).... i havent put a bigger radiator in, but i flushed my cooling system, and installed hood vents and i never had a problem. i think prestone is what i used and i put it and and drove about 300-400 mi i think before i flushed it out. do you have a eletric fan also? Link to comment Share on other sites More sharing options...
banshee Posted July 24, 2011 Author Share Posted July 24, 2011 Obviously I need to repost my question It’s simple under everyday driving in Indiana heat (90) it runs around 200deg F, if I park it running it blows the coolant out of the radiator into, then out of the reservoir bottle, then the motor gets hotter because of loss of heat transfer Radiator pressure tested and held 16# for almost 3hours, according to shop the tested it and preformed the flush, no major difference in cylinder compression, no missing, no water out of the exhaust, new 185 thermostat, spring present in bottom hose, new pump, three month old 2 core radiator, Bluntly it ran cooler before I changed it (radiator) because of leaking… B… HELP? Link to comment Share on other sites More sharing options...
cody4359 Posted July 24, 2011 Share Posted July 24, 2011 you running 50/50 mix or what? redline makes a coolant additive that depending on you mix supposedly cools up to 20*. http://www.redlineoil.com/Products.aspx?pcid=10 straight water boils at 220*, the antifreeze mix raises the BOILING point from 220 to like 230 or higher, depending on the concentration. Link to comment Share on other sites More sharing options...
64 Cheyenne Posted July 24, 2011 Share Posted July 24, 2011 hmmm seems like CC is getting a few D-bags on here now (talking about the 2 old farts).... Dang! I thought about you were talking about me, till I seen Jim in there. Really, my first post was kind of curt because of the minimal info given. All I still know is that he is talking about an MJ. NO engine info and most important of all, if it is a 4.0 did you burp it? And honestly, the two old D-bags are kind of smart, I usually listen to what they have to say. As the old people say "you learn more with your mouth shut" Link to comment Share on other sites More sharing options...
cody4359 Posted July 24, 2011 Share Posted July 24, 2011 what makes you think i wasnt talking about you.... d-bag is a d-bag regardless of age or brains. he asked a simple question. Link to comment Share on other sites More sharing options...
jimoshel Posted July 24, 2011 Share Posted July 24, 2011 Considering the source,,,,letting it slide. Link to comment Share on other sites More sharing options...
AMCJeepMJ Posted July 24, 2011 Share Posted July 24, 2011 :hijack: Out of curiosity, what age does one change from 'young kid' to 'old fart'? Is it a slow transition, or is it a puff-of-smoke-and-flash-of-light change? /still want to see bed-mounted radiator pics. Link to comment Share on other sites More sharing options...
64 Cheyenne Posted July 24, 2011 Share Posted July 24, 2011 :hijack: Out of curiosity, what age does one change from 'young kid' to 'old fart'? Is it a slow transition, or is it a puff-of-smoke-and-flash-of-light change? /still want to see bed-mounted radiator pics. Think it is a slow transition, don't see too many old dumb asses, just young ones. Makes me believe as people get older they transition from "young and dumb" to "old as the hills and twice as dusty" in a linear state. Meaning with age comes wisdom. Link to comment Share on other sites More sharing options...
87Warrior Posted July 24, 2011 Share Posted July 24, 2011 What year is your truck? Open or Close cooling system? I know you mentioned the 'radiator' holding pressure but if its an open system, is the pressure tank and cap in good shape? If closed what # cap do you have on the radiator? Have you cleaned out the AC condenser? Does your fan clutch work? Does your e-fan work? Does your truck have shrouds in good shape? You should not need a 185 t-stat in there, a 195 would work the same, be better for your motor, and still over heat because something else is wrong or malfunctioning in the cooling system. I usually find those off the shelf, saver in a bottle, things snake oil. But after driving my folks '93 XJ and noticing it getting hot, approx 230, even after a water pump, flush, and t-stat, I tried "water wetter" and it stayed an indicated 210-220. Still a little warm IMHO but might need the radiator fins cleaned and another flush. The cooling system is pretty straight forward. Pressurized hot coolant flows through a series of fins with air blowing across them, cooling the coolant and pumping it back into the motor. The coolant flow is controlled by the thermostat. Your topic of "Question" surely set a few folks off. You should at least give some sort of indication into what the 'question' is in the topic line for quicker help. I actually skipped your topic several times before clicking on it because it was so vague and I assumed the information inside would be very vague. Link to comment Share on other sites More sharing options...
mvusse Posted July 25, 2011 Share Posted July 25, 2011 If it's blowing out of the pressure bottle, it's boiling. Even straight water at 13 PSI doesn't boil until around 250 degrees or so, higher at 16 PSI. If you're boiling at 220 degrees, the system obviously does NOT hold 16 PSI. And when you changed the radiator, what did you fill the system with. If you used tap water instead of distilled I'm willing to bet your nice new radiator is plugged up with brown goop already. Hornbrod could probably have had a bit more tact in his answer. Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 25, 2011 Share Posted July 25, 2011 Hornbrod could probably have had a bit more tact in his answer. Yeah, he could have. :( I had just finished beating up my dog and was in a bad mood. :thwak: But seriously banshee, I do apologize. And no, I don't beat up my dog. :yes: Link to comment Share on other sites More sharing options...
64 Cheyenne Posted July 25, 2011 Share Posted July 25, 2011 Still don't even know what engine is in this truck. Read "pressure bottle" but that wasn't even from the OP. Still haven't got a yes or no on if the system was burped. Possible failed new pump? Would sure like to know if it has a good pressure bottle or not. FWIW, a "new" pressure bottle I purchased last winter with new cap failed. The "new" cap would not seal the new bottle, put the old cap on the new bottle, works well today. "new" cap was very cheap china product. Link to comment Share on other sites More sharing options...
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