High Pitched Noise

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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iTz LeThaL
Posts: 27
Joined: Wed Dec 03, 2008 8:54 pm
Car: 90, 300zx

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I just noticed this about 45 minutes ago but when i crank the car there is an incredibly high pitched noise it will squel for about 2-3 minutes then stop.....


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Zwicked
Posts: 3133
Joined: Mon May 14, 2007 6:19 am
Car: 1990 300 ZX tt, 1990 240SX

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Does it sound like a belt squealing? Does it do it more or longer if you turn the headlights on? Common for the Alt belt to do that if it's worn or out of adjustment. Needs to be taken care of SAP or it will glaze the belt and then you will have to change it, which isn't all that much fun!

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iTz LeThaL
Posts: 27
Joined: Wed Dec 03, 2008 8:54 pm
Car: 90, 300zx

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yes it sounds like a belt sqealing. So are you saying i need to replace the belt?

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300freekzx
Posts: 2030
Joined: Wed Jun 13, 2007 5:12 pm
Car: 1990 300zx N/A, 1992 Honda Accord LX , 1991 Honda Accord LX, 2006 M35 Sport
Location: Columbia, SC

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might just need to be adjusted

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iTz LeThaL
Posts: 27
Joined: Wed Dec 03, 2008 8:54 pm
Car: 90, 300zx

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alright well ill check on it. Thanks guys.

superman9915
Posts: 10
Joined: Fri Dec 28, 2007 7:07 pm
Car: 1992 300zx na slicktop

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i think i have the same problem and its comming from underneath my belt covers.

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evildky
Posts: 14225
Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 Datsun 240ZT
87 Nissan 300ZX N/A-T
06 Nissan 350Z GT
Toyota Tundra TRD RW
Location: Louisville, KY
Contact:

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superman9915 wrote:i think i have the same problem and its comming from underneath my belt covers.
if you have a belt squeal form beneathe the timing belt cover you have a bad cam or crank seal leak, or you have a bad tensioner or idler, either way you need to fix it asap, if the timing belt goes you get to rebuild your engine

nopepeno
Posts: 12
Joined: Mon Jul 18, 2011 3:47 pm
Car: 300zx 2003 n/a 2+2 and Maxima 1995 and altima 2005 3.5

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Hello, I am sorry for asking this but I am a noob and prefer to ask before getting into trouble.
but how do I adjust the belt. and why is so difficult to change this belt on this car?

I had a Jetta and it was a piece of cake to change the alt belt on that car.

anyone has Images?

thanks guys.

robomatic12
Posts: 672
Joined: Sun Jul 12, 2009 12:05 pm
Car: 1990 300ZX TT

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The accessory belts are pretty easy, it's the timing belt behind the plastic covers that is much more in depth for a backyard diy person.

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left shin
Posts: 41
Joined: Wed Oct 26, 2011 5:36 pm
Car: 1990 300zx NA

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nopepeno wrote:why is so difficult to change this belt on this car?
This is just a theory I have, but...

Whereas American cars were designed with part failure/replacement in mind (FORD in particular), in Japan, cars were engineered to be virtually maintenance free for the lifespan of the car. In Japan car owners usually don't own a car past 40-80K miles, and maintanence is usually performed by an auto shop. For a trained mechanic with a shop and the proper tools this isn't really so bad. Owning a car is considered a luxury in Japan, so ease of maintenance for the DIY'er wasn't really a consideration.


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