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Right now I'm at 151,000 miles, with a timing belt change coming this weekend.
While I"m in there for the belt, I think i'll take a detour and pull off the valve cover and see if anything jumps out at me.
what I've got, after spending the day with it is a harsh click. From my days as a honda owner, it sounds like the old "Honda Click" from the top of the engine-- which Hondas are well known for and is an indication of a valve adjustment being needed. But since the GLE has hydraulic lifters, that rules a valve adjustment out... It doesn't sound like a "puff" like I might expect from an injector.
It comes and goes. Once the engine hits about 2900 RPM it shuts up, and sometimes doesn't return, sometimes does return, albeit more faintly.
One odd thing, when I had the defroster on today, the clicking almost seemed to come and go with the cycling of the A/C compressor.... I.E. when the compressor kicked on, it's like the sound dissapeared, then for the most part did not return... Maybe something with the AC Clutch when it is not engaged??? I don't have a stethoscope, but I can swear it comes from the top half of the engine, toward the back...
I'm gonna do more poking around though.
Thanks for the help, and keep the advice coming. I"m sure to eventually nail the sucker down.
Fred
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