Leaking cylinder head O-rings and/or porous cylinder heads can cause coolant loss and engine overheating. A porous cylinder will require replacement.
1990 Volkswagen Vanagon Problem Reports
Most Reported 1990 Volkswagen Vanagon Problem Reports
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Aging plastic components in the cooling system—including the connecting pipes to the radiator—can fail unexpectedly.
Extensive transmission damage can occur in some of the automatic transmission models when the transmission oil cooler fails and allows coolant to mix with the automatic transmission fluid.
Reverse gear failures and noise in the manual transmission models are common.