I have a 1990 Honda Accord. When I apply the brakes, I hear a thump-thump-thump noise. As the car slows down, the thumping slows down. The noise seems to be coming from the front of the car. I checked the front disc brakes, and the pads and discs look fine. Could the thumping be related to weak CV joints or some other suspension problem?
Yes my cv axles had to be replace cause of the same thing but when you replace one side you need to do the other side at the same time cause when 1 goes bad the other is not that far behind . i know from experience
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Here are the only reason that can cause a thumping noise
Wheel and Tire Problems
Wheels can become bent from striking objects, and tires can develop bulges from broken belts or wear. Both problems may cause a thumping noise. Thumping sounds caused by wheel and tire problems will typically increase in frequency at higher speeds, though the sound may not be heard at lower speeds. These problems can often be spotted by visual inspection.
Worn or broken struts or strut mounts can create a thumping noise, especially when the vehicle hits a bump in the roadway. To test struts, bounce the rear of the car by forcefully pushing down on it and letting go. After letting go, the car should settle back to its original position without bouncing or noise.
Loose trim pieces near or in the wheel well can flutter in the wind while a car is being driven. These trim pieces may create a thumping noise as they strike other objects. A car owner can check trim pieces for looseness to determine if that is the source of the noise.
As a first course of action I strongly suggest that you take it in to any reputable mechanic and perform a valve clearance check. The clearance may be too far that's why it creates a noise. If that's the case then have a valve clearance adjustment.
You may want to replace the MAF (mass air flow) sensor too. If the MAF is faulty an erratic idle may occur and engine may stall. The MAF is located on the throttle body.
Hope this helps and thank you for using FixYa! Have a good one!
ABS only senses if the wheel is spinning or not.
"Thumping sound" sounds like a bad problem. I've not had thumping sound from my front brakes ever.
I don't know how a caliper could cause thumping.
Is everything installed correctly and do the brakes stop the car??
Check for leaks in the brake lines and calipers or brake cylinders. If leaking have it repaired right away its not safe. Change the brake fluid, take the old fluid out add new fluid or have it professionally done.
You say you hear the noise when you "slow down". Does this mean you hear the thumping noise when you let off the gas and let the car coast to a stop or only when you are applying the brakes to decellerate?
If you only hear the noise while applying the brakes then I would assume it has something to do with your brakes. The first thing that comes to mind would be rotors that aren't true or warped which could make a thumping sound.
Do you feel any vibrations in your foot when it is applying pressure to the brake pedal? If you do feel a sort of pulsating feeling then it could very well be your brakes making the noise.