2003 Volkswagen Jetta TDI Q&A
2003 Volkswagen Jetta TDI Question: Glow Plugs
The Glow Plug Relay turns on the glow Plugs for a certain amount of time and then shuts them off so they don't melt. They literally glow inside of your cylinders to help with the cold engine start up. Why are you replacing your glow plugs? Do you have a starting problem? - dandd
Because of issues with the glow plugs and/or the glow plug wiring harness from the control relay, the Check Engine Light may illumin...
I check engine light is on it states that is it Glow Plug Relay # 3. What is the cost of replacing this and what harm could this do to the engine
how to cahnge glow plugs