 Funky Engine Noise, what now? |
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| blitZ |
 Jul 15 2010, 03:21 PM
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#1
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Beer please...  Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States  |
So, I'm driving home from work and my car starts making this sound. It's like a scraping/ mild knocking sound. It seems to be coming from the fan area. I'm going to wait until it cools to dig in further. Any ideas what to look for? The engine starts and runs fine, no noticeable loss of power. Could it be the alternator or the fan coming loose?
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| underthetire |
Jul 15 2010, 03:22 PM
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#2
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
QUOTE(blitZ @ Jul 15 2010, 02:21 PM)  So, I'm driving home from work and my car starts making this sound. It's like a scraping/ mild knocking sound. It seems to be coming from the fan area. I'm going to wait until it cools to dig in further. Any ideas what to look for? The engine starts and runs fine, no noticeable loss of power. Could it be the alternator or the fan coming loose? loose/breaking belt? |
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| Cupomeat |
Jul 15 2010, 03:25 PM
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#3
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
Can you determine the frequency of the scrape? Is it at about engine RPM, or 1/4th that?
Does it happen under load, or off load, or any info like that? I'd doubt the fan is coming loose, but the alternator could make a sound like that if failing. Grab a little video of the engine with the sound. |
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| blitZ |
Jul 15 2010, 04:13 PM
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#4
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Beer please... Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States |
Here is a sound clip for what it's worth: Sound Clip
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| Mike Bellis |
Jul 15 2010, 04:23 PM
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#5
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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QUOTE(blitZ @ Jul 15 2010, 03:13 PM) sounds like something stuck in the fan to me |
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| blitZ |
Jul 15 2010, 04:38 PM
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#6
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Beer please... Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States |
QUOTE(kg6dxn @ Jul 15 2010, 05:23 PM) QUOTE(blitZ @ Jul 15 2010, 03:13 PM) sounds like something stuck in the fan to me I thought so too. I've looked at the fan with a mirror, and felt around and didn't find anything. |
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| detoxcowboy |
Jul 15 2010, 05:06 PM
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#7
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Senior Member Group: Members Posts: 1,294 Joined: 30-January 08 Member No.: 8,642 Region Association: Africa |
There is a spot just under the fan towards the rear where you can't see and you can't feel with your fingers.. I had the dropsies once with the engine tin screws one day, pain to get out..
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| blitZ |
Jul 16 2010, 04:19 PM
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#8
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Beer please... Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States |
I found the culprit. I took the alternator off and started the car, noise was gone. Turning it by hand it sounds pretty gritty. Easy and cheap fix. (IMG:style_emoticons/default/beer3.gif)
Thanks peoples. |
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