Shifting issues due to internal problems in high mileage automatic transmissions can be difficult to resolve without transmission replacement.
Problems for specific Volkswagen Jetta years:
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Most reported 1998 Volkswagen Jetta problems
One or more power windows may fail. Our technicians tell us this is commonly due to a failed window regulator which will require replacement.
Reverse gear failures and noise in the manual transmission models are common.
Electrical issues that are difficult to diagnose—and sometimes intermittent—are typically due to ground wiring issues. The most troublesome ground locations are under the battery or at the engine.
Fan assembly replaced. Dealer said there was a short in the electronics which led to fan not turning off after car was shut off.
Heater core leaks are common in this model, more so if the wrong anti-freeze/coolant is used in the cooling system.
Throttle body failure is not uncommon and can lead to shifting issues with the automatic transmission and other drivability concerns.
An accumulation of dust inside the body of the turn signal switch can cause a partially closed circuit, which results in the turn signal relay intermittently clicking at a high rate. Spraying a small amount of residue-free electronic contact cleaner (such as Electrosolve) inside the turn signal switch can resolve this problem. The turn signal relay is not the root cause of this problem, but may be damaged by it.