carl1647545492 Posted October 27, 2009 Report Share Posted October 27, 2009 Popped the hood and felt my radiator was hot on the inlet side and was cold on the other or at least the top half was,I guess it could be clogged? So I installed a new t stat and flushed the radiator pretty well and filled with fresh coolant and still its cold one side,could it still be clogged? the water pump does not have a lot of miles on it but have not checked that yet,ideas? Quote Link to comment Share on other sites More sharing options...
craig71188 Posted October 28, 2009 Report Share Posted October 28, 2009 This is not meant to sound like a smart ass answer, but it should obviously be cooler at the outlet. If the thermostat just opened up, it could, for a time, feel hot at the inlet and cold at the outlet until it runs for a while and the temperature stabilizes. If the thermostat has opened and then it's run for 5 minutes or so and it's still "cold", odds are you have some blockage. Testing the temperature at multiple points on the core will help to tell you where (not that you can really "pinpoint" flush the spot. If the blockage is bad, flushing may not solve the problem, the "flush" will take the path of least resistance and just "go around" the spot. If you don't have adequate cooling just leaving it alone, you'll probably be stuck replacing it or taking it to a radiator shop to be boiled out. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted October 28, 2009 Report Share Posted October 28, 2009 is it over heating? Quote Link to comment Share on other sites More sharing options...
carl1647545492 Posted October 28, 2009 Author Report Share Posted October 28, 2009 Temps are within spec but it will bother me driving like that. If the thermostat has opened and then it's run for 5 minutes or so and it's still "cold", odds are you have some blockage. Testing the temperature at multiple points on the core will help to tell you where (not that you can really "pinpoint" flush the spot. I will try that,are their any products that would be safe to "clean" a aluminum radiator if I removed it and let it sit overnight? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted October 28, 2009 Report Share Posted October 28, 2009 id say drive it and see if it over heats. not much to do with clean a aluminum radiator...most things that can clean it out, eat at the aluminum... Quote Link to comment Share on other sites More sharing options...
Nd4spd_150 Posted November 5, 2009 Report Share Posted November 5, 2009 just out of curiosity are you loosing any fluid i also agree with gearhead but drive it both normally and beat on it Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted November 8, 2009 Report Share Posted November 8, 2009 what kind of car? if its anything built by VAG and the stat did not make the hose get warm the impeller is gone from the end of the water pump the plastic heat cycles so many times and then the impeller just falls off Quote Link to comment Share on other sites More sharing options...
carl1647545492 Posted November 8, 2009 Author Report Share Posted November 8, 2009 Did a muriatic acid flush and a lot of crud came out,neatralized it with baking soda and shes fixed. I was not expecting it to work but it did and have a nice clean radiator that is warm over both sides,the only side effect was it burns into your nostrils and you smell it all day lol Quote Link to comment Share on other sites More sharing options...
351mach11647545510 Posted November 15, 2009 Report Share Posted November 15, 2009 idt anyone can beat the one i had in my S10. ask rob, that bitch was done for. Quote Link to comment Share on other sites More sharing options...
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