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L4-1.9L Turbo Diesel

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Question
car will crank battery fine but will only start with jump leads
Hi there: If you're having these issues only when it's really cold outside, it's possible that the battery is low on cold cranking amps. Batteries are measured in cold cranking amps which is the amount of amperage the battery can...
Question
glow plug symbol flashing without OBDII code
Oddly enough, a flashing glow plug light does not necessarily mean you have a problem in the pre-glow system. It can also mean there is a fault in other aspects of engine management. Much of the information that the car...
Question
Alternator Pulley came off!!
Hello there, many faults will cause the alternator pulley to fail on your 2003 Volkswagen Golf. When the pulley assembly fails on the alternator it is most often due to a seized alternator bearings. To remedy this issue properly the...
Question
over heating
Hi there: One thing that I've seen on TDI's in the past is air bubbles trapped in the coolant lines that will create excessive heat build-up. If you combine this with a thermostat that is not opening when it should...
Question
VW Polo overheats on the highway
Intermittent overheating problems can be very frustrating. But it sound like you've already covered half the bases. Usually overheating problems can be attributed to low coolant, thermostats, or radiators. At other times there may be problems with head gasket leakage...
Question
Car shaking and smoking
Hi there. The shaking and smoking issue you're experiencing may be caused by a fuel leak. Typically, if you look at your fluids or under the hood and can't see anything leaking, such as coolant, oil, or power steering fluid,...
Question
Burning oil
Broadly, if oil consumption exceeds 1 quart for every 1,000 to 2,000 miles that's when we start to refer to oil consumption as "excessive". Ideally, consumption should not exceed 1 quart in 4,000 miles or more. On your vehicle, before...
Question
Check Engine Light on
This relates to the throttle control actuator. This is a module that controls the opening and closing of the throttle plate which is what allows air and fuel into the engine. When this is not working properly, this may cause...
Question
Glow plug doesnt appear on dashboard 2000 VW Golf Diesel
Hello - the failure to get a "glow plug light" upon startup is most likely a fuse or switch issue, failing from repetitive use over time. Check these first. Also possible that one or more of the glow plugs themselves...
Question
Lots of white smoke
Hi there: The problem with diagnosing issues with a Volkswagen TDI remotely is that most of the common white smoke issues (piston rings, valve guides) don't apply with the turbo diesel system. The best and virtually only way to diagnose...
Question
We plugged in my bug for the cold temptures tonight and some white smoke started coming up with a burning smell. W
Hi there. If you got this smoke when the block heater was plugged in then it is possible that there is a short in the circuit. In most cases this is caused by a short in the heater circuit, but...
Question
I just replaced the fuel pump on my car and charged battery, it inconsistently rolls over but it will not crank
Hi there. Most of the time when a car will not start, the problem is with an ignition system sensor or component; such as a crankshaft or cam position sensor. If you have tested your car and determined that fuel...
Question
Brake lights not working fuse OK bulbs OK new Switch still not working
Hello, thank you for writing in. If you know that the brake bulbs, relay, and switch are good then you have an issue with the wiring or the ground connection. The body control module also plays a role in how...
Question
Have oil in the intercooler and the motor has no power 2004 VW Jetta Turbo-diesel
Hi - I suspect the [turbocharger oil seals have blown out](https://www.yourmechanic.com/question/turbocharger-leaking-oil, and are leaking oil into the air intake/intercooler piping. This is also reducing turbocharger efficiency, and power generation. I recommend a loss of power inspection performed by a mobile,...
Question
Starter not working and lighting issues
Be sure the battery is fully charged. "New" batteries are not necessarily fully charged at time of sale. Of course, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If there is...
Question
Hi Noe, This is my question. I have a 2006 VW TDI 1.9 and it leaks antifreeze from the reseivour tank at the cap pressure relieve
Hi there. It sounds like there may be combustion gases entering the cooling system. The hard starting could be due to coolant in the combustion chamber upon startup; the coolant leaks into the cylinder during a cold soak. There could...
Question
Engine won't crank with a new battery, new starter and new positive battery connection.
Hi there. It is very possible that you have an ignition system component failure that is causing your car not to crank over and start. It could be the ignition relay, starter relay or a faulty ground wire. Before you...
Question
my beetle burning oil
The specifications for the engine oil on your vehicle should be on a sticker under the hood. Normally, it is located on the radiator cover, the front of the hood, or on an emission sticker near the firewall. The information...
Question
01 TDI won't start when warm.
The computer is making the beeping noise as there is an issue with the starting circuit or main power circuit. Check the start relay and the main computer relay. See if they are getting hot. A hot relay will disconnect...
Question
My car cuts out when it's warm but not when it's cold
The power supply relay is a common fault in this generation TDi engine. Your issues are common symptoms of this relay being at fault. Using the diagram in the owner's manual, locate the fuel pump or "power supply relay". It...

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