Possible L27 UIM failure (with video)
Allow me to first say that this "possible" failure may not even be a failure, but rather a design flaw that may or may not have been encountered by others on this forum. Secondly, if it is a failure, it is not even close to how the L36 UIMs fail.
Now with that said...
I was working on the '94 SSE yesterday evening, hood open, engine running (checking for lifter chatter), and slight hand-induced movements to the throttle. Something caught the corner of my eye when I did this, and I was thinking "no way in h3LL". So I repeated blipping the throtte, watching the UIM. And sure enough, it happened again. What you ask? On the "front" of the engine (that would be the 1-2 cylinder side), near where the PCV valve is (I think it'* a PCV anyways...same location where the MAP would be on an L36), the whole "front" side of the UIM flexes when giving it the gas. And I wasn't goosing the throttle all the way either...it was more like reving to say, 3k then back to idle. It'* flexed for so long that stress cracks, or what appear to be stress cracks, have formed.
Current mileage is @123k. Pics and video will follow later this evening.
Has anyone else noticed this on their L27'* with composite UIMs?
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
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