Whining noise when accelerating started today! - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 20 (permalink) Old 10-28-2011, 09:04 PM Thread Starter
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Sad Whining noise when accelerating started today!

My 2002 Intrepid began making this winding and whining noise when accelerating. It also does it when placed in park and I press the accelerator. There is no knocking, grinding, or squealing sounds and it did not seem to have any hesitation. The care went through all gear changes seamlessly. I am not mechanical and am looking for information on possible causes. Are there any simple things that can be checked? Thanks...
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post #2 of 20 (permalink) Old 10-28-2011, 09:13 PM
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Is the wheel stiff or any differences with steering. Could be low power steering fluid or bad transmission. I'll let the pros get into details tho!
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post #3 of 20 (permalink) Old 10-28-2011, 09:22 PM Thread Starter
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The steering seems to be as normal as ever. I have had two "computer chips" replaced within the last three years. Both times, without warning, the car wouldn't go out of second gear. I hope this is not a transmission issue. Thank you for the response.
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post #4 of 20 (permalink) Old 10-28-2011, 09:22 PM
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Was you ac running at the time?
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post #5 of 20 (permalink) Old 10-28-2011, 09:26 PM
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Maybe its your diff. Spend 8 bucks and change out your gear oil. Mine whined right before it exploded.
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post #6 of 20 (permalink) Old 10-28-2011, 09:33 PM Thread Starter
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No A/C going...it was 40 degrees here today and rainy.....


Daytrepper...how do you change out the gear oil? I can check and add fluids and change a tire and jump start my battery. I am a single mom and a nurse that can do a lot of things, but automobiles are a little intimidating.
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post #7 of 20 (permalink) Old 10-28-2011, 10:15 PM
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Does it whine in park at idle, maybe not as loud but still there. Does it get louder when the engine revs? I'm thinking it could be one of your idler pulley bearings going or one of the other bearing in the belt system.

To change the gear oil you'll have to be under the car. The differential housing will have a fill plug and possibly a drain plug.(If there is no drain plug you will have to remove the whole cover to drain it.) Just drain it and then fill it to the bottom of the fill plug.

Last edited by quietzephyr; 10-28-2011 at 10:21 PM.
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post #8 of 20 (permalink) Old 10-28-2011, 11:23 PM
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Quote:
Originally Posted by Dixie0501 View Post
No A/C going...it was 40 degrees here today and rainy.....
The A/C also runs when the defroster is running - it de-humidifies the (usually) moist air from outside.
Turn off the heater unit completely to see if the noise is still there.

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Originally Posted by quietzephyr View Post
Does it whine in park at idle, maybe not as loud but still there. Does it get louder when the engine revs? I'm thinking it could be one of your idler pulley bearings going or one of the other bearing in the belt system.
+1

Certainly a good place to start looking! A lot of belts/bearings start to whine with the change to cold weather.
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post #9 of 20 (permalink) Old 10-28-2011, 11:43 PM
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Quote:
Originally Posted by quietzephyr View Post
Does it whine in park at idle, maybe not as loud but still there. Does it get louder when the engine revs? I'm thinking it could be one of your idler pulley bearings going or one of the other bearing in the belt system.
+2

Quote:
...The differential housing will have a fill plug and possibly a drain plug.(If there is no drain plug you will have to remove the whole cover to drain it.)...
There is a drain plug - right on the bottom of the diff. case. It has a square hole - for either a 1/4" or 3/8" socket drive/extension - probably 3/8".
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post #10 of 20 (permalink) Old 10-29-2011, 09:24 AM
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Maybe a vacumm leak . Check under the hood for any loose hoses or one might have a cut or gash in it. Look through the search section
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post #11 of 20 (permalink) Old 10-29-2011, 02:29 PM
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I'm not completely sure about it, but could it be the alternator? When I took my HAM radio class they said that the source of a high-pitched whine is usually caused by the alternator.
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post #12 of 20 (permalink) Old 10-29-2011, 03:27 PM
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I'm kinda surprised that 95intrepid99kid was the first one to mention the alternator. a vacuum leak doesn't usually cause any sort of whine, the car does it when in park - which means that its not the differential, not the AC because its not being used.

This pretty much narrows it down to either the alternator (which usually makes a high pitch whining when its going out) and a bearing on its way out (hopefully an idler pulley). Sounds like its time to open the hood and try to find out where exactly the noise is coming from. I know the idler and alternator are both close together on a 3.5 - not sure about the 2.7. If needed, use a piece of pipe as a stethascope to figure out which component is making the noise.
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post #13 of 20 (permalink) Old 10-29-2011, 03:38 PM
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I'm kinda surprised that 95intrepid99kid was the first one to mention the alternator. a vacuum leak doesn't usually cause any sort of whine, the car does it when in park - which means that its not the differential, not the AC because its not being used.

This pretty much narrows it down to either the alternator (which usually makes a high pitch whining when its going out) and a bearing on its way out (hopefully an idler pulley). Sounds like its time to open the hood and try to find out where exactly the noise is coming from. I know the idler and alternator are both close together on a 3.5 - not sure about the 2.7. If needed, use a piece of pipe as a stethascope to figure out which component is making the noise.
Wrong. The diff will do it in park, and i have my video to prove it.
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post #14 of 20 (permalink) Old 10-29-2011, 06:25 PM
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Wrong. The diff will do it in park,...
Transmission I could see, but diff.? When the car is not moving, nothing in the diff. is moving.
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post #15 of 20 (permalink) Old 10-29-2011, 07:40 PM
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Originally Posted by Squilliam View Post
Wrong. The diff will do it in park, and i have my video to prove it.
wrong will,,, ,, back to diff class 101, sitting still,,,,






dress them up, send them to school,, and you get diff noises,, sheesh,
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