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Old 01-26-2019, 05:23 AM
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Join Date: Mar 2010
Location: Freehold, NJ
Posts: 501
1979 300sd ticking noise under hood

My 1979 300sd periodically makes a ticking / clicking sound when the key is in the on position (pre glow) and not running. I think it is something from the HVAC system?? I don't know if this would have anything to do with it, but when I purchased the car last week, the blower didn't work and nothing worked for the HVAC system. I replaced the fuses and got the defroster button to work for heat. The other buttons also work but melted the AC fuse.

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1979 300sd ticking noise under hood-51077013_574555019637163_4872206837543337984_n.jpg  
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2022 Nissan Frontier Pro4x
1990 Mercedes 420SEL
1950 Packard 8

Previous German cars-
2001 Mercedes SL500
1983 Mercedes 300SD
2011 BMW 328i (manual)
2008 BMW 535xi (manual)
2006 BMW M3 (manual)
1980 Mercedes 300TD
2006 BMW 750i
1996 Mercedes E300D
1994 BMW 740i
2006 BMW 330xi (manual)
1999 E300DT Smoke silver/black 253k
2012 BMW 535i Xdrive M-Sport
1984 300TD-T 304k
1988 Mercedes 560SEL (parts car)
2010 BMW 550i xdrive
2017 Audi A4 Presitge
1979 300SD 313k
2003 E500 189k

Last edited by turbozeke418; 01-26-2019 at 06:45 AM.
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