My 84 300 SD is making a strange noise.
I removed the crossover resonator and replaced it with a straight piece of exhaust tubing. My noise started at about the same time.
I can't put the resonator back on but I don't know what else might be causing the noise .
The car doesn't have to be moving and the noise will come on at about 1000 rpm and go away by about 1500.
Can anyone tell me what the resonator is supposed to be doing.
I can't believe MB put it there for no reason and it must cost a ton. The exhaust is not loud so it doesn't seem noise was the reason.
Thanks,

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Darrell

1984 300SD "Ole Girl"
207K