2003 Volkswagen Jetta TDI Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Volkswagen Jetta TDI
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2003 Volkswagen Jetta TDI ProblemsCheck Engine Light Due to Issues With Glow Plugs/Wiring Harness
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.
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.
2003 Volkswagen Jetta TDI QuestionsNeed transmission replaced should I get a used one with 34000 miles on it ? Three months warranty or a rebuilt with one or two year warranty for a 2003 Volkswagen Jetta 1.8T runs good? (1 answer)
Shop wants $3000.00 for the used one installed with a 3month warranty 34,000 miles on it? My car runs good I service it always but can't decide on a reduilt ? With a year or two warranty please help? I'm a disable veteran low income and I'm paying cash I live in Garden Grove CA 92843
If you have any suggestions!!!
Some times check engine light comes on.
Obviously, when I stop and shut engine off it will reset.
This only happens going up hill, and is intermitent.
When the light comes on, it shows an overrev code.