1998 Volkswagen Jetta TDI Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 Volkswagen Jetta TDI
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1998 Volkswagen Jetta TDI ProblemsLoss of Power Due to Oil and Carbon Build Up in Intake Manifold
Oil and carbon tend to build up, creating restrictions in the intake manifold. Symptoms will be loss of power (sometimes severe) and poor fuel economy.
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.
Because of issues with the glow plugs and/or the glow plug wiring harness from the control relay, the Check Engine Light may illuminate. Our technicians tell us there is a service bulletin, not a recall from Volkswagen regarding replacement of the glow plugs on 2004-2005 model years only.
1998 Volkswagen Jetta TDI Questionsok i have no advance on fuel pedal engine wont excelorat (1 answer)
sounds like its running on two cyls and grey smoke
Car started and ran fine yesterday. I park it in the garage unlocked and when I went to leave this morning, I opened the driver's door and the alarm went of. I shut the alarm off with the remote, closed the door and the alarm went off again. I turned off the alarm (factory-installed), put ...