Are you having problems with your 1998 Volkswagen Transporter? Let our team of motoring experts keep you up to date with all of the latest 1998 Volkswagen Transporter issues & faults. We have gathered all of the most frequently asked questions and problems relating to the 1998 Volkswagen Transporter in one spot to help you decide if it's a smart buy.
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Check the PCV valve, it might need replacing. A faulty PCV valve can cause a problem like you are describing.
Check the catalytic converter to make sure it hasn’t collapsed internally and is blocking the exhaust flow.