Question about Mercedes-Benz 300-Class

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1984 300d has a whining noise when driving can shift to neutral shut off motor and it still whines

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Check your radiator fan motor might a bad bearing.

Posted on Jul 20, 2009

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What would cause my transmission to whine, but only in gear, not in neutral or park?


Time for a trans rebuilt

What your hearing is mostly pump noise, from
fine debris in the pump valve bores or worn bores

2001 is way over due to come apart

Worn out from heat & wear & seldom seen a fluid change

Funny shifting is worn & hardened rubber parts,partially
clogged solenoids,dirty valve body,the usual, given the years
& mileage on it

Sep 20, 2014 | 2001 Oldsmobile Bravada

1 Answer

Engine making whining noise


There are a couple of things to check. If your power steering pump is low on fluid, or a bad bearing is in the Alternator, they will whine. The PCV valve or any hole in the Vacuum lines will whine as RPM is increased. Even having the Air filter box not fully seated will make a whining noise.

Now both automatic and manual transmissions can whine as RPM is increased. Check fluid for each.

Serpetine belt and pulleys-can make noise.

Sometimes you can shift into neutral at any speed and the engine rpm will drop almost instantly as the car rolls at speed. If the problem disappears as soon as the rpm drops, then an engine part probably is the reason.

Oct 11, 2013 | Ford Mustang Cars & Trucks

1 Answer

Transmission whining


have you checked the transmissions fluid level, need to check it with the car running in park or neutral, on level ground. If its in neutral make sure the parking brakes are applied and the tires chucked to secure the vehicle and prevent rolling. Locate the dip stick for the transmission pull it out whipe it clean, then re insert it into the dip stick tube until it is fully seated, pull the dip stick out and look at the markings it should read more than half on the hot side.

Sep 21, 2013 | 1996 Chevrolet Suburban

2 Answers

Whining when i press gas


normally, the only part of your automatic transmission that will make a whining noise is the pump. it usually whines when iether the fluid is low or more commonly when the transmission oil filter is getting plugged up.

the power steering pump will also make a whining noise too.

turn the wheel all the way to the right and hold steady pressure against the stop. this puts maximum force on the power steering pump and, if the power steering pump is the one making the whine, it will change the sound of it. (usually louder).

if the trans pump is making the whine noise, it should sound different in neutral compared to drive. this test will really only work if it make the noise without the vehicle moving. if it wont do it at idle hold the rpms at 2000 or so.

if you decide the noise is coming from the transmission, and the transmission filter has not been replaced (assuming you installed a used transmission), replace the filter by removing the oil pan.



oh and also, if it is the power steering pump you should be able to make it make the whining noise while the vehicle is stationary. if it wont make noise unless its moving its not the power steering pump.

Mar 23, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Whining noise


Can you make the noise happen with your foot on the brake, trans in gear, and a little throttle? And does it go away in park & neutral? If yes to both questions you probably have a faulty thrust bearing in the torque convertor. If no to both questions you like have a faulty "input drum to pump cover thrust bearing." Either way the problem must be repaired ASAP or when the bearing fails it will be at the worst possible time, like in the middle of an intersection with a firetruck bearing down on you.

Sep 09, 2009 | Chevrolet Cars & Trucks

1 Answer

Whining from engine when in gear


Just a thought- remove the oil filler cap when the whine is present - (this checks if PCV valve is faulty, causing high crankcase vacuum, which in turn causes a whistling/whine noise as air leaks past engine oil seals). Worth a check.

Try listening with a short piece of hose pipe to locate immediate area/source of noise.

Jun 17, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Whining noise from engine


Hello
altho new you may have a whining water pump or tensioner or it may be over tensioned.

take a long screw driver & place in on the timing cover to try to here where the noise is coming from, this should help you find the proplem with the car
Regards Paul
www.limotec.co.uk

Jan 11, 2009 | 2000 Volvo V40

1 Answer

1st, 3rd and 5th Gears all pop out of place + Whining noise


hi my name is nathan .......now...... what it sounds like is #1 (I have to hold it in place til I get to second gear) that can be that your shift linkage is worn or out of adjustment,pilot bushing is Badly worn,shift fork,lever and or shaft is bent or worn,or your bell housing is misaligned or just loose...i have a few more ideas on why it is jumping out but those are the main ones now about your whining gear noise#2( The whining sound starts low pitched in each gear then gets higher pitched as the rev's increase) you may have worn gears maybe or it could be just that your transmission lubricant is incorrect or inadequate.

Dec 26, 2008 | 2000 Volvo S40

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