Theres a few ways, one you will hear a loud "roaring" or grinding sound when driving commonly known as a "roaring wheel bearing" another way is you can jack the car up and get the wheel off the ground and see if you can make it move up or down or back and forth "kind of a wobbling since motion" I hope this helps you.
The way to tell if you have a bad wheel bearing is when you are driving and go into a hard corner. The wheel that is on the inside of the corner stops making a humming noise. I just replaced my Driver Rear bearing on my 2004 VW Gti
Grand Ams eat wheel bearings, if one is bad you might as well replace both of them as the other will go out in a month or so, I had a 94 and replaced 6 wheel bearings in that car in 113,000 miles.
Most of the time you can hear a bad wheel bearing but the only 100% sure way to know is to remove the bearing and inspect it.Most of the time you can hear a bad wheel bearing but the only 100% sure way to know is to remove the bearing and inspect it.
Really need to know the year, make, model and front or rear wheel bearing to answer this correctly.
Need to know if it is 2 wheel drive or 4 wheel drive.
Not that I know of , just rear wheel drive on a Mercury Grand Marquis from the factory
Generally a grinding sound can be heard from the offending wheel at first. If a wheel bearing is suspect, jack one side of the car up at a time and grab the wheel at the 12 and 6 o'clock position and see if the wheel has excessive play on the horizontal axis. If there is play, then a wheel bearing failure is likely.
Timken bearing better but I dont know
Yes, provided you have the necessary tools and know-how to do it.
If you hear a noise you suspect is a bad wheel bearing try this. While driving slowly turn the wheel sharply to the left. If the noise goes away your left front wheel bearing is bad. Now, turn sharply to the right. If the noise goes away you right front wheel bearing is bad. The only 100% sure fire way to know for sure is to remove the wheel bearing and inspect it.
i want to know if a 2004 grand am , 2.2 engine has a egr valve
yes I have had my wheel bearing replaced free under warranty. just don't let them know that you could have possibly damaged it under human error and it shouldn't be a problem.