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914World.com _ 914World Garage _ clanky noise from engine

Posted by: rgolia Oct 1 2012, 01:08 PM

when the car idles, there is a clanking noise coming from the front of the engine. At high rpm the noise is gone and the engine is running great. When I put an electrical load on the alternator during idle, like put the lights on, the noise goes away. The alternator is brand new. Is it a fan belt issue?

Posted by: tim_nd Oct 1 2012, 01:10 PM

I'm fighting this same issue with my car. It is the alternator, actually it's the belt not being tight enough.

Posted by: aircooledtechguy Oct 1 2012, 01:16 PM

Check that your bottom mount bolt bracket has not cracked and is now broken. I've seen this a few times lately on 914s here at the shop.

Posted by: 76-914 Oct 1 2012, 03:55 PM

is the fan tight to the shaft? also, check the fan to be sure there is nothing inside the squirrel cage.

Posted by: rgolia Oct 8 2012, 10:39 AM

well it was the pulley on the alternator shaft that was loose. All better now...thanks for the help.