Alternator Knock?

Maintenance advice to keep your Spider in shape.
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CharlieB
Posts: 237
Joined: Sat Aug 22, 2015 8:01 pm
Your car is a: 1976 Fiat Spider

Alternator Knock?

Post by CharlieB »

A few days ago my 76 Spider developed what I thought was a rod knock. I'm a total noob to this so I wasnt sure what the noise was or exactly where it was coming from. So I started the engine today and poked around a bit and found that if I put my hand on the back of the alternator, the noise goes away. Nothing is loose or missing. Anyone else ever had this happen, or know what the problem is.
The noise is very similar to a rod knock which I am very familiar with unfortunately.
1976 Fiat 124 Spider
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124JOE
Posts: 3141
Joined: Fri Jun 24, 2011 7:11 pm
Your car is a: 1978 124 fiat spider sport 1800
Location: SO. WI

Re: Alternator Knock?

Post by 124JOE »

sorry no idea
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
Rambo

Re: Alternator Knock?

Post by Rambo »

If you don't already have one purchase a mechanics stethoscope that you can poke around in different areas to find the source of the noise.
vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Alternator Knock?

Post by vandor »

Sounds like either the alternator bolt is lose, or the mounting brackets are lose or broken.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
CharlieB
Posts: 237
Joined: Sat Aug 22, 2015 8:01 pm
Your car is a: 1976 Fiat Spider

Re: Alternator Knock?

Post by CharlieB »

There was a nut on the heat shield that was damaged. The nut felt tight but was not making contact with the shield.
I replaced the nut and all is well.
Thanks for responses.
1976 Fiat 124 Spider
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