Engine grinding/growling

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Engine grinding/growling

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Engine grinding/growling - 7/24/2006 8:02:06 PM

Friendly Fred

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Joined: 7/20/2006
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I just bought a 2003 S-10, automatic with 4 wheel drive and I hear a Grinding - growling sound every time I start up after the car has been overnight in the garage. It only lasts for less than a mile and then sounds OK. A mechanic told me this was standard on all S-10 with the 6 engine and that fan clutch. Can anyone confirm that. If true, why did not Chevy have a recall?

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RE: Engine grinding/growling - 7/24/2006 8:20:43 PM

NCHEVYHEVN

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I have an 01 sonoma with the v-6 and mind doesn't have any grinding noises. The fan does make a loud whirling noise when it starts to get hot or on startup after it's been sitting for a while. Definatly doesn't make a grinding noise though.

(in reply to Friendly Fred)

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RE: Engine grinding/growling - 7/24/2006 9:45:43 PM

kcb37

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That doesn't sound right to me. Does it sound like it comes form the fan clutch? Or does it sound like it comes from the engine. You may have to get out to really tell as the fan clutch is on the front of the engine. What is you oil press at? I don't think it would be your engine. But it doesn't hurt to check. It may be that when the fan kicks it gets better lubrication and makes the grinding stop. I really don't know what to tell you right now other than it is probably a fan clutch as you were told. If that is what it is, and you cannot get a replacement that won't do it you could put in an electric fan.

(in reply to NCHEVYHEVN)

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RE: Engine grinding/growling - 7/24/2006 10:16:28 PM

NCHEVYHEVN

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quote:

ORIGINAL: kcb37

That doesn't sound right to me. Does it sound like it comes form the fan clutch? Or does it sound like it comes from the engine. You may have to get out to really tell as the fan clutch is on the front of the engine. What is you oil press at? I don't think it would be your engine. But it doesn't hurt to check. It may be that when the fan kicks it gets better lubrication and makes the grinding stop. I really don't know what to tell you right now other than it is probably a fan clutch as you were told. If that is what it is, and you cannot get a replacement that won't do it you could put in an electric fan.

Well he said it makes the a growling noise when it first starts up which is when the fan is engaged which means that extra lubrication idea kinda goes out the window. And the mechanic told him that it was a normal noise that the fan clutch made not that the fan clutch was bad.

An easy thing to do to see if it is the fan clutch or the motor is to just pop the belt off and start it up after it's been sitting a while. If the noise is still there then it's something else but if it's gone then that will narrow down the search to something on the front of the motor.

(in reply to kcb37)

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RE: Engine grinding/growling - 7/24/2006 10:23:29 PM

kcb37

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Not completely. After it sits it any lubrication would have time to run off. When first started it wouldn't instantly be lubricated again. Hence the grinding at start up.
To add not everything a mech says it gods word. My sister had brakes put on a car, the mech that did it couldn't get the calipers over the rotors with new pads so he took a belt sander to them. New parts should fit easily, and it was both sides. All that was was the slide pin the caliper slides on had not been greased in a long time. So they forze. I put brakes on the car put new pins in after greasing them and never had a problem again.
I will say taking the belt off will narrow it down a lot quicker and that is a good thougt that I didn't think of.

(in reply to NCHEVYHEVN)

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RE: Engine grinding/growling - 7/24/2006 10:55:07 PM

NCHEVYHEVN

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quote:

ORIGINAL: kcb37

Not completely. After it sits it any lubrication would have time to run off. When first started it wouldn't instantly be lubricated again. Hence the grinding at start up.
To add not everything a mech says it gods word. My sister had brakes put on a car, the mech that did it couldn't get the calipers over the rotors with new pads so he took a belt sander to them. New parts should fit easily, and it was both sides. All that was was the slide pin the caliper slides on had not been greased in a long time. So they forze. I put brakes on the car put new pins in after greasing them and never had a problem again.
I will say taking the belt off will narrow it down a lot quicker and that is a good thougt that I didn't think of.

I agree on the mechanic thing. I was working at a dealership and one of the smartest techs. there that did all the transmission work tried to convice me that leaving a battery on concrete would cause it to loose charge.

You kinda lost me on the whole lubrication type thing though. True their is split second where it's not lubricated but if you read the first post he said the noise happens for about a mile down the road.

(in reply to kcb37)

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RE: Engine grinding/growling - 7/24/2006 11:39:11 PM

kcb37

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Sometimes it can take a minute, however a mile does seem a little long.

(in reply to NCHEVYHEVN)

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RE: Engine grinding/growling - 7/24/2006 11:41:37 PM

NCHEVYHEVN

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Well I've never seen a motor take a minute to build pressure. The pump is mechanical so as soon as you turn the key over the pump is turning and within a 10 seconds the pump should be up to operating pressure.

(in reply to kcb37)

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RE: Engine grinding/growling - 7/24/2006 11:48:12 PM

kcb37

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The pressure comes from the bearings. And if it is fairly dry it may take a little bit of a good coating to get it to stop.

(in reply to NCHEVYHEVN)

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RE: Engine grinding/growling - 7/25/2006 7:42:07 PM

Friendly Fred

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The oil Pressure is either at 40 or 60.