BLHTAZ Posted November 16, 2008 Share Posted November 16, 2008 No...I have never done it running. The three I have done have been with engine off and definitely cool enough that the t-stat was closed. Link to comment Share on other sites More sharing options...
maddzz1 Posted November 16, 2008 Share Posted November 16, 2008 The only time i did this was when i swapped my cluster and had to swap sensors. My truck was off and i had the cap on and a little fluid poured out then stopped. :hijack: nice one wade. :shake: Link to comment Share on other sites More sharing options...
robfg67 Posted October 6, 2010 Share Posted October 6, 2010 Blatz, I followed your "air purging" instructions but I did it with the engine running (my fault-I didn't read your instructions correctly). When I took her out for a test drive, she was running like crap-low idle and no compression. Would this be symptomatic of air still in the system or could I have more significant problems? The reason why I needed to purge the system was because my original overflow bottle (21 years old) cracked. Link to comment Share on other sites More sharing options...
Pete M Posted October 7, 2010 Share Posted October 7, 2010 did you plug the temp sensor back in? Link to comment Share on other sites More sharing options...
robfg67 Posted October 7, 2010 Share Posted October 7, 2010 Yes, I did plug it back in before the test drive. I'm heading back outside now to purge the air correctly this time. Link to comment Share on other sites More sharing options...
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