Whistling noise when shifting gears

After starting my car and start driving, it has a low whistling noise when it takes off. I can also hear it when I am shifting gears. The sound is like whistling plus the sound of a jet engine. It is not extremely loud, but very noticeable. In addition to this, each day the gas mileage in my car is growing worse. When I first purchased my car, it got 26 mpg and now a few weeks later it is reading 21 mpg. Please tell me what is wrong with my car and how to fix it. Thanks.
Experienced mechanics share their insights in answering this question :
Hello there, thank you for asking about your 1989 Buick Reatta. Your gas mileage will vary depending on what kind of driving you’re doing. It’s possible the first week you did mostly highway driving, while the second week you stayed mostly in town. As for the noise, I need more information. When does it happen and at what speeds? Where does it seem to be coming from? My best advice is to have your vehicle’s gas mileage and whistling noise inspected first hand by a professional, such as one from YourMechanic.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

If your car is making a high pitched whiny noise that is amplified when the knob hits R on your gear shift, you may need a new transmission fluid filter. If you shift into reverse and the whine gets louder before you even give it any gas, you may have a clogged filter.
If your transmission makes a grinding noise when you shift gears, you are likely experiencing friction between gears due to insufficient transmission fluid, worn transmission linkage, maladjusted binding, or a “dragging clutch.” If you hear grinding sounds when shifting from neutral to any gear, you may be dealing with …
Weatherstripping: A high-pitched whistling inside the cabin might be due to a leak in your weatherstripping. If the whistling is outside the cabin, it might be a vacuum leak in your hoses.
If your vehicle makes a whining noise when you are accelerating, a transmission problem is most likely at fault. Whining when accelerating due to transmission problems can be caused by worn-out gears or low transmission fluid due to a leak.
Transmission fluid ensures that the gears shift smoothly, but there will be a clunking sound in manual transmissions and whining sounds from automatic ones if it is low.
A humming or whining noise in an automatic transmission vehicle often means that you are low on automatic transmission fluid. If this is the case, you want to refill that fluid immediately. Transmission fluid reduces friction, which means heat, which in turn is bad news for transmissions.
This whining sound can be caused by any number of transmission issues. Low transmission fluid or a clogged fluid line/filter are the most likely culprits, but there could be other internal damage causing the noise.
Tinnitus is the medical term for “hearing” noises in your ears. It occurs when there is no outside source of the sounds. Tinnitus is often called “ringing in the ears.” It may also sound like blowing, roaring, buzzing, hissing, humming, whistling, or sizzling.
1. A high-pitched squeal when accelerating. If you notice a loud squeal when accelerating, especially if your car is just warming up, it could be that you have a loose or worn fan belt. Usually if your fan belts are worn, it could mean your timing belt needs to be replaced as well.
Low Transmission Fluid: For both manual and automatic transmissions, the primary cause for whining when in gear is low transmission fluid. If the fluid is too low, then the internal components of the transmission are not lubricated properly.
If the sound resembles humming, buzzing, or clunking, you may be experiencing transmission failure. Bad automatic transmissions may emit humming, buzzing, or whining noises while manual transmissions have harsher “clunking” sounds.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My gear shift doesn’t shift to any other gear its stuck on neutral. I open the gear assembly and I can pull a lever which allows me to move it.
ANSWER : Hi there. The shifter interlock solenoid is not working and needs replaced. The shifter interlock solenoid makes the shifter lock in place so it does not move if you accidentally move it into another gear. If you need further assistance with your shifter not working, then seek out a professional, such as one from Your Mechanic, to help you.

Won’t shift past 2nd gear . It drives normal to 2nd gear but wont shift into 3r – 2000 Ford F150 4×4
ANSWER : Hello – I don’t think this is related to switching back to 2WD per se. There is a shift position sensor on the side of the transmission, and it’s possible that the snow activity caused moisture and/or dirt to get into the sensor. I would recommend a transmission inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

I got sound when I shift to 3rd gear and it’s get hard to put shift to second gear when car is in 3rd gear.
ANSWER : Hello. It sounds as though the synchronizers in the transmission, which are used to adjust transmission internal gear speed when upshifting or downshifting are possibly worn out or you are shifting a bit too fast. It is also possible that the clutch is not releasing fully when you press the clutch pedal. In some conditions, utilizing synthetic gear oil in the transmission can help the quality of gear shifting. If the clutch is not fully releasing an inspection of the clutch hydraulics is a good idea. I would recommend having an inspection of the hard shift completed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost for repairs.

The car doesn’t shift into first gear while it works fine in reverse
ANSWER : The problem could be that the internal transmission pump is weak, or the transmission clutch seals are leaking. It sounds like the transmission will need an overhaul.

I recommend having a transmission mechanic test the pressures and diagnose the problems to verify whether you need an overhaul with a new torque convertor.

the car will not shift into any gear, but the gear shift moves
ANSWER : transmission shifting

Chattering noises coming from transmission
ANSWER : Hello. From the symptoms you’ve described it would appear to me that there may be an issue with the clutch disc or perhaps flywheel.

If the contact surfaces of either are excessively worn it may cause intermittent chatter, as you are experiencing. If the clutch is still the original one than it may need to be replaced.

If you’d like a second opinion on this or would like to get this fixed, consider getting some help from a qualified mechanic who can diagnose the noise your car is making. Once this assessment is made an accurate repair can then performed.

Gears get stuck and hearing some noise in the exhaust. Some running noise that doesnt sound normal when parking. 1996 Mazda Miata
ANSWER : Hi there – either your clutch hydraulics (master/slave cylinder) are weak, or something wasn’t done right with your clutch repair. It shouldn’t fail so quickly. Either the clutch is dragging because the clutch hydraulics are weak, or the pilot bearing wasn’t replaced when the clutch was repaired, and that bearing is now seizing. This has the same effect as a dragging clutch – hard to get in gear when you’re stopped. I recommend a clutch inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Gear Shuffling Problem in Vauxhall Vectra 52 Registration
ANSWER : Hi there. We don’t see a lot of Vauxhall Vectra’s here in the United States, so unfortunately, we’re not able to suggest a possible solution or cause of this problem you’re experiencing. You should consult with a professional mechanic in your home town to determine what’s causing the shifting problem you’re experiencing.