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Topic
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04′ chevy malibu LS 3.0L Automatic FWD 180k mi.
Suspected it to be the wheel bearings, but after checking out ETCG’s wheel bearing vid I’m thinking otherwise.
Whenever the vehicle is stopped and the throttle is pushed, there is a single knock sound. & Also when the vehicle comes to a stop, there is a single knock. As if something is having trouble locking into place.
Once the vehicle gets to about 30+MPH there’s a progressive clunking sound coming from the front end. Once the throttle is depressed, the sound dissipates, but can still be heard. I pulled over on the side of the road to check it out, and it smelt like burnt brake fluid. Idk, something was burning. Maybe the tranny fluid? 🙁 Placed it on the jack and tugged on the wheels – No play.
It sounds exactly like this – The sound it makes.
Anyone have an idea on the culprit? I’m thinking it’s the transmission…. but I’m really hoping it’s not. If it is, I think I may have to junk it.
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May be an issue with the Torque converter. Can you check the color/level of the fluid?
You might try safely lifting the front end of the vehicle off the ground and running the vehicle and looking for the source of the noise…
-Karl
[quote=”MynameisMud” post=130602]04′
Whenever the vehicle is stopped and the throttle is pushed, there is a single knock sound.
.[/quote]
Not sure why you’d be doing BOTH actions at the same time…
Anyhow. Something’s wobbling. You know where I’d have started? Control arm bushings. Control arm moves back for at take off and braking. It sure did sound LOUD in TURN, which is another CA tip. So start there.
Otherwise, I’d look at CV axles.[quote=”ToyotaKarl” post=130605]May be an issue with the Torque converter. Can you check the color/level of the fluid?
You might try safely lifting the front end of the vehicle off the ground and running the vehicle and looking for the source of the noise…
-Karl[/quote]
I’m going to lift it either tomorrow, or saturday. I only had time to make sure there was no play in the wheels before I had to run to work. I’ll have a look, and update this thread.
[quote=”ukrkoz” post=130636][quote=”MynameisMud” post=130602]04′
Whenever the vehicle is stopped and the throttle is pushed, there is a single knock sound.
.[/quote]
Not sure why you’d be doing BOTH actions at the same time…
Anyhow. Something’s wobbling. You know where I’d have started? Control arm bushings. Control arm moves back for at take off and braking. It sure did sound LOUD in TURN, which is another CA tip. So start there.
Otherwise, I’d look at CV axles.[/quote]Sorry, I worded that very wrong. Not simultaneously. I meant when the vehicle comes to a complete stop, and I release the break and push the throttle in, it will make that single knock sound, and vice versa.
I’ll take a look at the CA, and the CV axles. I’ve also been told it may be the struts, but I doubt that.
If it is indeed the CA, how difficult do you think it would be to replace it? As a beginner technician going to college? I don’t want to take the whole front end apart, you know? lol.
Once I get some free time (Tomorrow/Sat.) I’ll update this thread.
Thanks, gentlemen. 🙂
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