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could be the fluid level is low
Fixing a transmission bearing noise often times requires rebuilding the transmission. If you are mechanically inclined it is not hard to do. Make sure to purchase a transmission repair manual as it will make it easier.
Maybe you have a miss in your engine?
Your throw out bearing is the problem.
countershaft bearing could be problem
Certain types of tires may cause a brief humming noise after your initial acceleration. The transmission may also cause a brief humming noise.
Internal transmission failure.
Check fluid level - Good luck
Common causes of engine klunking noise in a car include issues with the engine mounts, worn out suspension components, loose or damaged exhaust system parts, and problems with the transmission or drivetrain.
A whining noise in the transmission is usually an indication the transmission fluid is low. Check the transmission fluid and fill it to the recommended level.
The easiest way to fix a low growling noise in a 1997 Ford Aspire might be to add Lucus oil stabilizer to the oil. This will depend greatly on where the low growling noise is coming from and it might be even easier to first have a mechanic pinpoint the noise.