How can the operation of the braking system vacuum pump be checked using a vacuum gauge on 2001 Volkswagen Cabrio?

In order to check the braking system vacuum pump operation, remove the vacuum line and replace it with a vacuum gauge. After starting the engine you should get a minimum of 20 inches Hg reading in one minute. If it is less, the pump might be faulty. Overhauling is not possible, replace the entire pump if it is needed.

Genuine 2001 Volkswagen Cabrio Vacuum Pump

Vacuum Pressure Pump

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2001 Volkswagen Cabrio Vacuum Pump Part Number: 4B0-907-325
$185.64 MSRP: $260.00
You Save: $74.36 (29%)
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Product Specifications
- Replaces: 811-907-325
- Item Weight: 1.20 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 4B0-907-325
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following 2001 Volkswagen Cabrio Submodels:
- Base, GL, GLS, GLX, High Line | 4 Cyl 2.0 L GAS

2001 Volkswagen Cabrio Vacuum Pump Parts and Q&A

Q: How can the operation of the braking system vacuum pump be checked using a vacuum gauge on 2001 Volkswagen Cabrio?
A: In order to check the braking system vacuum pump operation, remove the vacuum line and replace it with a vacuum gauge. After starting the engine you should get a minimum of 20 inches Hg reading in one minute. If it is less, the pump might be faulty. Overhauling is not possible, replace the entire pump if it is needed.