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tom_secret1998
Samba Member
Joined: May 30, 2018
Posts: 61
Location: Quebec
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 Posted: Mon May 29, 2023 11:42 pm Post subject: Strange noise at cold |
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Hello there,
Recently ive start my 1970 VW and notice that strange noise coming from behind the fan housing. When the engine heats up, we ear it less or if the engine rev a bit at 1500 - 2000 rpm
The only Time we hear that is when the engine is cold or running low in idle.
Many people that ive speak too never ear it before so i dont know what could it be
Youtube: https://youtu.be/lu3G_fQ6LFI |
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Schatzievw
Samba Member
Joined: November 11, 2022
Posts: 73
Location: NC
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| Posted: Tue May 30, 2023 6:15 am Post subject: Re: Strange noise at cold |
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| Logically it sounds like the thermostat controlled dampers inside the fan shroud. When engine heats up the dampers open. Is it a rattling sound? |
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tom_secret1998
Samba Member
Joined: May 30, 2018
Posts: 61
Location: Quebec
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| Posted: Tue May 30, 2023 7:13 am Post subject: Re: Strange noise at cold |
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It doesnt rattle like (knocking). It mostly sound like friction, ive also notice that when i put my hand on the shifter, you can barely feel the sensation of friction.
Some say it might be the clutch bearing or the transmission being damaged. But the thing is, it shift perfectly, goes to 100 - 110 km/h (60-70 MPH) with out hesitation and only does that at cold  |
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VW_Jimbo 
Samba Member
Joined: May 22, 2016
Posts: 9966
Location: Huntington Beach, CA
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| Posted: Tue May 30, 2023 7:17 am Post subject: Re: Strange noise at cold |
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Take a good look at that area. A small mirror and a flashlight are your good friends!
_________________
Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
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doug bugg
Samba Member
Joined: March 08, 2003
Posts: 349
Location: Minneapolis
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| Posted: Tue May 30, 2023 11:40 am Post subject: Re: Strange noise at cold |
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This might be a longshot but could be the cooling fan mount plate in the doghouse. Mine did the same thing until it finally just let go completely, didn't think I'd make it home.
_________________
"Knowledge is Good" - Faber College |
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tom_secret1998
Samba Member
Joined: May 30, 2018
Posts: 61
Location: Quebec
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| Posted: Tue May 30, 2023 12:20 pm Post subject: Re: Strange noise at cold |
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| doug bugg wrote: |
| This might be a longshot but could be the cooling fan mount plate in the doghouse. Mine did the same thing until it finally just let go completely, didn't think I'd make it home. |
Did he make the Same kind of sound? |
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tom_secret1998
Samba Member
Joined: May 30, 2018
Posts: 61
Location: Quebec
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| Posted: Tue May 30, 2023 12:22 pm Post subject: Re: Strange noise at cold |
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I will check it this evening and give you an update  |
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Schatzievw
Samba Member
Joined: November 11, 2022
Posts: 73
Location: NC
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| Posted: Wed May 31, 2023 8:23 am Post subject: Re: Strange noise at cold |
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| Also check belt tension....too much can tilt alternator/generator and cause fan to rub doghouse. |
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doug bugg
Samba Member
Joined: March 08, 2003
Posts: 349
Location: Minneapolis
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| Posted: Wed May 31, 2023 9:25 am Post subject: Re: Strange noise at cold |
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| tom_secret1998 wrote: |
| doug bugg wrote: |
| This might be a longshot but could be the cooling fan mount plate in the doghouse. Mine did the same thing until it finally just let go completely, didn't think I'd make it home. |
Did he make the Same kind of sound? |
Hard to describe but was kind of a scraping racket that came and went and then finally wouldn't go away.
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"Knowledge is Good" - Faber College |
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