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What would make an automatic car make a weird noise when you start it and change gears eg from park to reverse?
Wiki User
∙ 14y ago
There are many causes, but the first thing to do is to check the Transmission Fluid level.
Check the owner's manual for the procedure...it will tell you whether the transmission must be in "neutral", or "park" (some older cars in "drive").
DANGER--FIRMLY SET THE PARKING BRAKE BEFORE YOU START!
1. Start the engine and leave it idling until the engine temperature gauge reaches normal.
DANGER--STAY CLEAR OF FAN BELTS AND OTHER MOVING PARTS!
2. Open the hood and (using a rag) clean around the area where the transmission dipstick (NOT THE OIL DIPSTICK) goes into the tube.
3. With the engine still idling (using a lint-free rag) pull the transmission dipstick out, wipe it off and reinsert it all the way into the transmission tube. Pull it out again and look at the fluid level. The fluid level should be between the "low" and "full" marks--or in the "hatched" area.
4. If the fluid level is low or there is no fluid on the dipstick (very low), shut off the engine and take ANOTHER vehicle to the auto parts store and buy about two quarts of transmission fluid and a special funnel (ask the parts person). Be sure to use the correct transmission fluid for your car...the parts guy/gal can help you with this.
5. Back at home, restart the engine (with parking brake set) and warm it up as before.
6. Using the special funnel you just bought, SLOWLY add transmission fluid by pouring it through the funnel into the same tube where you removed the dipstick.
DO NOT OVERFILL...ONCE YOU OVERFILL IT, YOU CAN'T TAKE IT BACK OUT!!
Here is a second common cause: The transmission fluid should be colored RED and transparent on the dipstick. If it is brown or dark brown, the fluid has been overheated and/or is very dirty. Have a qualified shop change the transmission fluid (including the fluid in the torque converter) and the transmission filter.
Hopefully this will solve the problem. If not, take your car to the dealer or a qualified transmission shop for analysis and repair.
Wiki User
∙ 14y ago
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Why does my car make a grrrr noise when I back it up?
The grrr noise you hear should be more like a whiring, this is because the reverse gear is a straight cut gear, while all the other gears are helical ( 1st ,2nd, 3rd, 4th and 5th) when two straight cut gears meet there is more noise present due to the way the gears connect, as the reverse gear uses several small gears to change a clockwise motion into a anti-clockwise motion.
How do you distinguish manual transmission from automatic?
Physically, Manual Transmission has at least 5 gears including a reverse gear which is 'manually' changed by the driver during the course of the drive. Automatic Transmission however has a Park, neutral, drive 1 and 2, reverse. This is much easier to drive. They can be distinguished by the sound they make. A manual transmission hardly makes noise when gears are being changed. An automatic on the other hand, will make short bust of noises when gears are being changed. This is only valid for high powered cars. Also, if a manual car breaks down, it can be moved. automatic however, cannot be moved if it breaks down which is a big disadvantage.
Your 1995 rodeo has a clicking noise under the hood but when you accelerate to change gears it stops until you shift Then it clicks again?
have the tappet settings checked.if automatic lfters,check engine oil for correct level correction, not automatic lifters,hydraulic lifters
How do you tell if the transmission is failing?
Automatic: First sign, the fluid is brown (or black) and smells burnt. Also, car shudders on take off or takes a long time to change gears (slips alot). You might even loss reverse and/or first. Manual: Makes noise, hard to shift gears, won't go into gear. Note check oil level in manual tranny. Most people don't
Why does your conversion van make a screeching noise when you change gears?
the clutches in torque converter
What does it mean when you hear a clunking noise when your K1500 automatic transmission shifts gears and it appears to happen when accelerating slowly and not when accelerating faster?
A clunking noise when shifting gears on a K1500 automatic transmission, might mean a problem with the drive axle or drive shaft. Check all U-Joints to make sure they are working properly.
Why does a Jetta make noise when in reverse?
If it's a manual it's supposed to whine when reverse is used, if it's an automatic it probably just needs transmission fluid.
Where are sliding gears used?
Sliding Gears in a transmission are straight-tooth spur gears with a taper (also known as a lead) to make engaging easier. Helical gears are mostly used in a transmission because spur gears produce gear noise and have a great strain on the teeth of the gear since only one tooth can be in contact at any given time. But because helical gears cannot be taken out of mesh, spur gears are used for the reverse gear because reverse spins the opposite way and cannot be in constant mesh.
Why does my 1994 Nissan Pathfinder 4 wheel drive auto hub makes grinding noise after shifting from reverse to drive automatic transmission?
The transmission on the 1994 Nissan Pathfinder may need to have a fluid flush. Dirty fluid will cause the gears to shift hard when transitioning from place to place.
What makes an automatic car make a noise when it is turned on and when you change gears from reverse to park or park to any gear?
There's a few reasons: When a automatic transmission vehicle is turned on, the small but the seemingly small burst of energy it takes to start the car by means of combustion, it may rock the motor mounts and cause maybe a moving.. or bumping sorta sound. When you move the gear lever in any position, the energy from where in neutral, the torque converter, which keeps the engine running while in a gear, or switching to another selection of gears, has to mesh with the flywheel of the engine so that you can press down on the accelerator pedal/ brakes and causes the noise of the motor mounts absorbing that energy. However, the noise shouldn't be a very loud noise, if it seems loud it could be either a motor mount(s) going bad and needing replaced, to possible transmission problems.
Why does your 96 Honda Accord with 200000 miles make a noise only when backing up?
because the reverse gears are designed differently. Because you don't use reverse as much as the other gears it's make cheaper, so it ends up making a whine while you back up. hope this helped
What could be causing a grinding or scraping noise when the automatic transmission switches gears in a 1997 Honda Civic?
If it just lasts for 1 or 2 seconds, it is the clutch plates ratteling and not to worry.
