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why would the loud noise ( like the pump is really straining) be intermittent and completely stop at times? It comes and goes and is especially dependent on the engine being warm or the temp outside is warm?
No, I did not flush the lines. Can I flush them now and add new ATF or is the damage a done deal? What is the best way to flush the lines? Do I have to disconnect one of the return lines to the pump to do that? Will it drain by gravity or does it need to be pumped out somehow?
The compressed air trick should work. Can I just put an extension tube on the low pressure return line coming back into the pump to capture the blown out fluid? Still it has me flummoxed as to why it will be quiet at times an make no additional noise at all and then start growling again...hmmmm