dwa175 Posted September 6, 2015 Share Posted September 6, 2015 had to replace raditor in my 90 I'm conch all is does just overheats I did all the tricks I know. it has coolet bottle something to do with the French [sorry] any ideas.it is 6 cyl no air,auto 158000 miles. thanks dwa,note radiator hoses all new and get hot ,left side rad doesn't seem to get hot air?. Link to comment Share on other sites More sharing options...
Pete M Posted September 6, 2015 Share Posted September 6, 2015 you might have a bubble stuck inside your engine near the coolant temp sensor. try this bleeding procedure: -make sure the coolant sensor at the top-back of the engine turns easily -point the truck downhill (or jack up the rear end and put it on stands, back the rear end up on a curb, etc) -make sure the engine is cool so there's no chance of spraying hot coolant all over. -turn on the truck and let it run for a moment to build up pressure. -turn it off and bleed out any air you can by slowly unscrewing the temp sensor (trying not to let to unscrew all the way) -repeat until no more air escapes. :thumbsup: Link to comment Share on other sites More sharing options...
dwa175 Posted September 8, 2015 Author Share Posted September 8, 2015 peter m thanks I forgot nose down I will jack up sat morn I did many of these but this has been a bear it just seems air locked,if nothing works I am going to pull radiator out something is wrong,i will update dwa Link to comment Share on other sites More sharing options...
Jackrabbit41 Posted September 11, 2015 Share Posted September 11, 2015 Get an aluminum coolant reservoir. I had overheating issues and then got a Mac radiator diamond aluminum tank and it fixed all my problem. I even had a brand new radiator and it still over heated due to the crappy plastic reservoirs. Link to comment Share on other sites More sharing options...
64 Cheyenne Posted September 15, 2015 Share Posted September 15, 2015 At the very least a brand new plastic bottle, if the cap has even a slight leak, it will overheat. No used tanks allowed, new only. Link to comment Share on other sites More sharing options...
Tommy Posted September 18, 2015 Share Posted September 18, 2015 I replaced my cracked plastic tank with a new plastic tank and cap. 6 months later it started leaking again. Went ahead and stepped up to the Mac's aluminum tank and am very happy. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 18, 2015 Share Posted September 18, 2015 I really don't get it. :hmm: For the $$ you guys spend on overpriced aluminum expansion/fill tanks, you could junk the obsolete Renix closed cooling system and convert it to an open system. It's self burping - downhill parking and repeated burping by pulling the temp sensor unnecessary. Link to comment Share on other sites More sharing options...
Tommy Posted September 18, 2015 Share Posted September 18, 2015 Nothing wrong with closed systems. New cars are going back to closed systems. The surge tank on the Comanche was just a colossal mistake. Link to comment Share on other sites More sharing options...
Crash Posted September 19, 2015 Share Posted September 19, 2015 Nothing wrong with a properly functioning closed system. However, it's inexpensive enough to make the swap to an open system if you are spending money to replace parts anyways. Basically the same as replacing a failing/failed heater valve, all the new ones are plastic. Just bypass it and call it done. The later models did away with this valve all together. Note for those that switch to Open.. use a 16lb cap. Also, say you already installed a new "closed system rad" .. aside from the other things that are necessary to change to convert is an inline hose rad apparatus/cap. Nothing wrong with closed systems. New cars are going back to closed systems. The surge tank on the Comanche was just a colossal mistake. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 19, 2015 Share Posted September 19, 2015 Nothing wrong with closed systems. New cars are going back to closed systems. The surge tank on the Comanche was just a colossal mistake. "New cars are going back to closed systems." A few of the "throw-away" economy models are, mainly to save production costs. "The surge tank on the Comanche was just a colossal mistake." For sure. Jeep engineers themselves admitted the closed system was the "worst mistake we ever made." Link to comment Share on other sites More sharing options...
Pete M Posted September 19, 2015 Share Posted September 19, 2015 worse than the peugeot? or the CAD? or the wiring harness blunders? or the 35? or the dozen different ways that water gets under the carpet? that says a lot. :D Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 19, 2015 Share Posted September 19, 2015 worse than the peugeot? or the CAD? or the wiring harness blunders? or the 35? or the dozen different ways that water gets under the carpet? that says a lot. :D "The surge tank on the Comanche was just a colossal mistake." For sure. Jeep engineers themselves admitted the closed system was the "worst mistake we ever made." Random quote pulled off the interweb. :yes: Link to comment Share on other sites More sharing options...
gunparts Posted September 21, 2015 Share Posted September 21, 2015 I put a 2001 Dodge Intrepid Pressure Tank in with the Radiator cap and it solved all my Problems cost $10,There are a lot of Posts on this Forum about how to do it and it really works. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 21, 2015 Share Posted September 21, 2015 First generation (92-97) Dodge Intrepid pressure bottle. Link to comment Share on other sites More sharing options...
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