How does a diesel engine start a TDI?
The basics. First, here is a post with much of the basics of the diesel engine. For the TDI to start, electrical power needs to flow from the battery through fuses and relays to the key switch and ECU.
What to do if your Jetta won’t start?
If it’s cold and you have a 2009-2012 Jetta CLICK HERE for information. This is by no means a comprehensive list of problems, just some of the most common. Use common sense when doing any testing and be sure that you won’t get run over if the car suddenly and unexpectedly springs to life.
What is the second most common problem discussed on TDI club?
This is probably the second most common problem discussed on TDI club, second only to glow plug problems. I will try to outline some of the problems that people have had, provide links to what has been done and add some pictures and links to guide you along to get your car started.
What does it mean when your car won’t start?
If you have a “No Start Condition” (NSC) you need to differentiate between some different fault situations. You were driving along in your car and the engine died and won’t start, or it just won’t start, but may start after sitting for awhile.
What is the relay 109 on a beetle?
The relay 109 is the main electrical switch for the car. When it goes bad it won’t allow the car to start. I had this problem exactly with my beetle and it started right up the first time I turned over the key once it was replaced. It will be in a panel between the seat and the pedals towards the door.
Why does my TDI make a clicking noise?
Click to expand… Dude, the 109 is for the ecu, it does not stop a tdi from cranking. It’s not the main power for the car, classic symptom of a bad 109 is the glow plug light not coming on like normal but the engine will crank just the same.
Can a bad ignition switch cause a click?
If you have a click, it is not your ignition switch. The power does not go through the ignition switch. You have a bad starter or a bad battery or a bad connection between the battery and starter most likely. Have you checked the quality of the ground wire on the starter? it is braided and can corrode, eventually turns to dust.
When does your VW TDI diesel engine Hiccup?
However, it has its issues. The 2006-11 VW TDI models seem to have a common issue, as shown by complaints to NHTSA about hesitation and or a “hiccup”, that is, a split second pause, usually when when accelerating. Most of the time, the “hiccup” lasts a second, but to a driver, it is very noticeable—enough to cause an “Aha!” or “What’s that?”
Why does my TDI engine hesitate when accelerating?
Possible Causes of TDI Hesitation or Sputtering While Accelerating. There are a couple of possibilities to check out or tell your mechanic to check out. Excessive oil gathering near the lower end of the intercooler. Disconnect the lower hose of the intercooler with a container ready to catch any oil.