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Scratching/tapping noise '85 Sierra
https://auszookers.com/forum/viewtopic.php?f=5&t=24245
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Author:  doish [ Tue Jul 26, 2011 5:56 am ]
Post subject:  Scratching/tapping noise '85 Sierra

As said I've got an '85 Sierra. Not quite sure what it is, but when I'm at full throttle I get this scratchy tappy sort of noise, almost like a loose screw tapping around but then sometimes it sounds more scratchy.
Any ideas of what this may be? Did do a search but unfortunately didn't come up with my problem!

Author:  TryHard [ Tue Jul 26, 2011 7:03 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

a While ago i had same problem turned out to be the Screw on the alternator bracket was lose .. basicly go over car check if anything is lose thats my advice and simple to do :)

Author:  doish [ Tue Jul 26, 2011 7:11 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

piss easy thanks mate!

Author:  doish [ Tue Jul 26, 2011 7:23 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

just had a look, seems a pin thingy wasn't in a little hole on this lever contraption (i know next to nothing about cars) sitting on the drivers side of the firewall. while i'm at it what is that thing?

Author:  stockman [ Tue Jul 26, 2011 7:37 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

A picture might help. The only thing I can think of with a pin is the heater tap.

Author:  SierraDan [ Tue Jul 26, 2011 7:54 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

stockman wrote:
A picture might help. The only thing I can think of with a pin is the heater tap.

Thats what im thinking.. full throttle and a ticking sound sounds like you need to back off the throttle

Author:  doish [ Tue Jul 26, 2011 7:56 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

Image

and closer..
Image

Author:  SierraDan [ Tue Jul 26, 2011 8:04 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

thats the heater lever thing.
did it fix it?

Author:  doish [ Tue Jul 26, 2011 8:07 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

SierraDan wrote:
thats the heater lever thing.
did it fix it?
yeah so far so good, ran her up the road and back just after i took the pics and doesn't seem to be scratching anymore!

Author:  SierraDan [ Tue Jul 26, 2011 8:16 am ]
Post subject:  Re: Scratching/tapping noise '85 Sierra

Well there you go. Haha.

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