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  View original topic: ODD "THUMP"
KBH67 Tue Nov 04, 2025 4:56 am

My 73 Super Beetle has an odd thump when coasting. It runs great, but when I let off the gas and start braking, you can hear a thump coming from the rear. Not from the motor but it's definitely in the back end. Any ideas?

NJ John Tue Nov 04, 2025 6:46 am

A constant thumping or a single thump?

KBH67 Tue Nov 04, 2025 6:57 am

NJ John wrote: A constant thumping or a single thump?

Constant

Glenn Tue Nov 04, 2025 6:58 am

CV joint?

doug bugg Tue Nov 04, 2025 7:45 am

Is it when you start braking and keep braking or after you let up off the brakes?

Are your rear shoes somehow wonky?

KBH67 Tue Nov 04, 2025 8:06 am

doug bugg wrote: Is it when you start braking and keep braking or after you let up off the brakes?

Are your rear shoes somehow wonky?

It's not in the brakes. Does it when coasting, braking or whatever.

bsairhead Tue Nov 04, 2025 8:21 am

Coasting in neutral?

KBH67 Tue Nov 04, 2025 10:17 am

bsairhead wrote: Coasting in neutral?

Coasting in neutral, or in gear.

Glenn Tue Nov 04, 2025 10:41 am

Glenn wrote: CV joint?
^^^^^^
This

doug bugg Wed Nov 05, 2025 6:55 am

KBH67 wrote: bsairhead wrote: Coasting in neutral?

Coasting in neutral, or in gear.

You can only coast out of gear in neutral or with the clutch pedal depressed. The engine under a load, or engine braking, is not coasting.

bsairhead Wed Nov 05, 2025 7:15 am

doug bugg wrote: KBH67 wrote: bsairhead wrote: Coasting in neutral?

Coasting in neutral, or in gear.

You can only coast out of gear in neutral or with the clutch pedal depressed. The engine under a load, or engine braking, is not coasting. What about my question confused you?

doug bugg Wed Nov 05, 2025 8:14 am

Oh, nothing. Just saying that the only time you can coast is in neutral.

bsairhead Fri Nov 07, 2025 7:56 am

doug bugg wrote: Oh, nothing. Just saying that the only time you can coast is in neutral. Am I not coasting when I depress the clutch in gear ?

doug bugg Fri Nov 07, 2025 8:32 am

doug bugg wrote: KBH67 wrote: bsairhead wrote: Coasting in neutral?

Coasting in neutral, or in gear.

You can only coast out of gear in neutral or with the clutch pedal depressed. The engine under a load, or engine braking, is not coasting.

Ummm, yeah. Like I said...



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