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Oh no! not another dash noise! S70 1998

I have a rather annoying noise that comes from the center of the dash, seemingly behind the instrument cluster or simlar area.

When under full-throttle acceleration at the upper rev ranges (5800-6200ish) in first and second gear (speed limits too low to test other gears :P) there is a really obnoxious and really obvious rattling noise from the above mentioned area. Anyone heard this before? Any fixes?

Any ideas are appreciated! (I checked the driver side dash speaker, it seems to be working well so I doubt the magnet fell off.... how would I check to be sure?)

I tried pressing in different places applying pressure hoping the noise would go away... no luck. (instrument panel top and front covers, speaker grilles)

One last idea, is there any possibility that I could hear rattling from a loose bolt on my turbo heatshield all the way in the cabin so easily? That was my only other idea.... (which kind of made sense since the noise is only heard under full throttle when in gear, not in neutral, so the turbo would be spooling up more...?)

It's really driving me nuts!

Someone help!

Thanks in advance,
Scott Silverman

(P.S. keeping the car in first gear and that high up in the rev ranges is probably not good for the engine, and definetely not for gas mileage, so I've been trying to keep investigation down to a minimum)
--
'98 S70 T5-M - Tropic Green w/ tan, Spoiler, Fog Lights, CD-6/CD-3 Changer, External Amp, Cold Weather Pkg, Sunroof






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