Volkswagen Glow Plug Related Questions
Do you need to replace the glow plug? Is the glow plug the cause for the engine not cranking? A glow plug is a small device meant to facilitate the engine to crank and start especially during cold starts. If repairs are beyond your mechanical knowledge then consult with an Expert online who is prepared to give you an accurate answer. Read below for a few of the many questions verified mechanical Experts have answered.
Is a yellow spiral or double loop warning symbols related to VW glow plugs?
Yes, this is the glow plug light which has illuminated and there could be trouble codes stored in the engine control module. A faulty glow plug can trigger this light. In case the light is flashing, the fault can result in further damage to the emission system. In order to be sure, first a scan tool should be plugged in to check the codes.
Is it safe to continue driving the Jetta with the glow plug light illuminated?
Generally, when the glow plug light is on, it is fine to continue driving as long as loss of power is not experienced with the VW. However, it would also be wise to have the car checked for trouble codes. Most likely the problem here could be either a faulty glow plug or glow plug harness.
Is the P0380 code related to a glow plug problem?
Yes, typically the P0380 code is triggered when there is a problem with the glow plug system’s resistance. This occurs due to the glow plug’s wiring harness depreciating from constant engine vibrations thereby making contacts poor or causing open circuits. In this case, replacing the glow plug harness and glow plugs should fix the code.
How is the glow plug relay tested?
To test the glow plug, the resistance of each glow plug should be checked. This is done by removing the engine cover and finding the harness. A digital multi-meter set at the lowest ohm setting and a 10 mm socket is required. One probe should be placed to good ground while the other at the glow plug tip. Each of the glow plugs should be tested and the resistance noted. The reading should be 0.5 to 1.5 ohms. In case any glow plug shows a higher resistance, it is not working.
Where are the glow plugs located on a 2001 VW Jetta and how are they replaced?
The glow plugs on this VW can be found next to the fuel injectors above each cylinder. They resemble very thin spark plugs. The electrical harness which connects all the glow plugs is similar to a black rubber vacuum hose. In order to replace the glow plugs, remove the hose connected to them. Then unscrew the glow plug and remove to fit another one.
Why does the VW crank but not start?
Case Details: No voltage present at the glow plug fuse relay.
Typically, when the ignition system is switched on, the fuse should have power present briefly. In this case, the glow plugs may not be working or heating when required causing the VW to crank but not start. Since there is no voltage, the relay that controls and operates the glow plugs could be faulty and would need to be replaced.
What does the error code P13D4 signify?
This is concerned with a faulty cylinder pressure sensor which is inbuilt in cylinder # 3 glow plug. To overcome the problem and error, the glow plug would need to be replaced.
As seen above, there are an array of questions which can arise with Volkswagen glow plugs. Most of the time the fix is simple; however, constant illumination of error lights can be a warning of more serious underlying problems. The above article may not cover all the questions or problems which can arise with glow plugs. Do you have other glow plug problems or questions? Get online assistance from Experts as and when you need them from the comfort of your home. Their timely assistance can help resolve the problem while saving time, money and energy.
