danboone5 Posted December 4, 2010 Share Posted December 4, 2010 Alright my Jeep has been not warming up right in over 8 months. This problem started after it began overheating back in April. I changed the thermostat out and it began this stupid "I'm not going to warm up and run like crap." Since then I have replaced thermostat 4 times with different brands and I know to use a 195 degree or the Renix system will run rich. I've flushed it twice. Thermal fan is good. E-fan is good. Burped it properly. Top radiator hose is barely warm. The heater blows lukewarm air. It is starting to get cold for around here and I need some heat. Don't get me wrong, I'm glad its not overheating but it is still a problem. I want to fix in right, not put a piece of cardboard in it. Its not that cold, the truck should run correctly. If you have some idea please let me know. I have searched here, Naxja, and a few others. I even googled it with no avail. Thanks for any help. Quote Link to comment Share on other sites More sharing options...
mvusse Posted December 4, 2010 Share Posted December 4, 2010 My first thought was that you must have used a "failsafe" piece of crap garbage thermostat (they will be stuck open to never close again if they ever hit 200-210 degrees). But then I read you tried four different thermostats of different brands. I'm stumped. Quote Link to comment Share on other sites More sharing options...
signalb Posted December 4, 2010 Share Posted December 4, 2010 What type of mix are you running in your radiator? You could try bumping up the glycol (antifreeze) content so that it runs a little hotter. Quote Link to comment Share on other sites More sharing options...
vaquaro Posted December 4, 2010 Share Posted December 4, 2010 Have a look at "Go Jeep"'s site from Australia , he has a mod (flow reducer ) to hold coolant in the block longer , it looks simple and it might work for you . :thumbsup: http://gojeep.willyshotrod.com/index.htm Quote Link to comment Share on other sites More sharing options...
vaquaro Posted December 4, 2010 Share Posted December 4, 2010 Here's an easier link :D http://gojeep.willyshotrod.com/HowtoRadiatorRestrictor.htm Quote Link to comment Share on other sites More sharing options...
Comanche County Posted December 4, 2010 Share Posted December 4, 2010 Is the heater control valve on the heater core lines stuck closed? Check the vacuum connection to it. Also, is the temp gauge working correctly? Quote Link to comment Share on other sites More sharing options...
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