grinding at sharp right turn
10-17-2017, 01:08 PM
#1
grinding at sharp right turn
Just started today after a warm up. At 20+ mph, if I turn the wheel quickly to the right, but not too far (like the start of a slalom move) I get a grinding that sounds like it's coming from under the hood. Long right turns, it's fine. Anything left turn is fine. Anything straight is quiet.
AP1 with 30,000 miles. Nothing new added recently. Brake pads 500 miles ago. I have a Karcepts front sway bar and it seems tight and fine. I run 17" 245 square and they have never rubbed and there is no sign of rubbing. Jacked it up on the right side and front wheel spins fine and seems tight. Can't see anything loose in the engine compartment. Something to do with the steering mechanisms?
Thanks in advance for the guesses.
AP1 with 30,000 miles. Nothing new added recently. Brake pads 500 miles ago. I have a Karcepts front sway bar and it seems tight and fine. I run 17" 245 square and they have never rubbed and there is no sign of rubbing. Jacked it up on the right side and front wheel spins fine and seems tight. Can't see anything loose in the engine compartment. Something to do with the steering mechanisms?
Thanks in advance for the guesses.
10-17-2017, 04:05 PM
#2
That sounds like a wheel bearing starting to go bad. That’s a common symptom of a wheel bearing starting to break down. It’s not that easy to diagnose by just wiggling the tire while it’s jacked up. Sometimes the grinding oscillates, caused by a bad spot in the bearing.
Another possibility is that your axle nuts needs to be torqued down. Do a search on this and you will find a good write up by Billman.
Another possibility is that your axle nuts needs to be torqued down. Do a search on this and you will find a good write up by Billman.
10-27-2017, 01:08 PM
#3
That sounds like a wheel bearing starting to go bad. That’s a common symptom of a wheel bearing starting to break down. It’s not that easy to diagnose by just wiggling the tire while it’s jacked up. Sometimes the grinding oscillates, caused by a bad spot in the bearing.
Another possibility is that your axle nuts needs to be torqued down. Do a search on this and you will find a good write up by Billman.
Another possibility is that your axle nuts needs to be torqued down. Do a search on this and you will find a good write up by Billman.
10-27-2017, 01:44 PM
#4
check that your rotor heat shields have a nice gap to your rotors all around. Check that there aren't any rocks wedged between the rotor and brakes.
If it's not that, put your front end on stands, use your jack under each front arm and compress the suspension as normal and turn the wheel to check if anything is hitting. At only 30K miles, i doubt it's your wheel bearings, but it could be i guess.
If it's not that, put your front end on stands, use your jack under each front arm and compress the suspension as normal and turn the wheel to check if anything is hitting. At only 30K miles, i doubt it's your wheel bearings, but it could be i guess.
10-27-2017, 03:33 PM
#5
check that your rotor heat shields have a nice gap to your rotors all around. Check that there aren't any rocks wedged between the rotor and brakes.
If it's not that, put your front end on stands, use your jack under each front arm and compress the suspension as normal and turn the wheel to check if anything is hitting. At only 30K miles, i doubt it's your wheel bearings, but it could be i guess.
If it's not that, put your front end on stands, use your jack under each front arm and compress the suspension as normal and turn the wheel to check if anything is hitting. At only 30K miles, i doubt it's your wheel bearings, but it could be i guess.
10-29-2017, 08:43 AM
#6
Both front wheel bearings replaced. That fixed it.
It does seem early for bearings to fail at 30k miles, but I've done a half dozen autocrosses that probably contributed to the failure.
It does seem early for bearings to fail at 30k miles, but I've done a half dozen autocrosses that probably contributed to the failure.
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10-30-2017, 04:18 AM
#8
Amazed as well, my rear wheel bearings lasted 138k miles without doing an axle nut TSB and 3 previous owners. Fronts are still ok @ 168k
10-30-2017, 04:43 AM
#9
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While doing the front wheel bearings something got moved to eliminate the noise.
10-31-2017, 06:02 PM
#10
Well the noise came back after wheel bearing replacements. And while shop said they did see a bad bearing, I'm not sure that was it. It was probably nothing more than some binding in the Karcepts front sway bar. They adjusted it a bit after the "groaning" returned after bearings were replaced. I think it was some tension in the bar joints, which when "adjusted" (meaning loosened slightly) the noise disappeared.
But what was odd is that the groaning or grinding only happened after the car was warm.
Anyway, fixed now.
But what was odd is that the groaning or grinding only happened after the car was warm.
Anyway, fixed now.
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