I need a little help with a problem. I have a 1982 300sd (126 body) and I seem to get a "click" noise or a quiet pop sound when I go over bumps - like small pot holes or bad pavement cracks. It seems to be coming from the firewall near the passenger side of the car, but I don't know exactly, and I can't see anything obviously broken.
Thanks for you assistance,
Corey

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1982 300sd
1980 300cd (sold)

Brake support.

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles

your type of problem can only be resolve accurately if you send it to a mechanic who would know how to detect where the noise is coming from.

Just before hitting a bump, press the brake pedal slightly. If the noise goes away, what Len says is on the money.