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L4-1.9L Turbo Diesel

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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...
Q: 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...
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...
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...
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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...
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,...
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...
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...
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...
Car making whining noise while accelerating and the noise arrest wn I touch 120kmpl and pickup of vehicle Also arresting ...to get
Does the noise occur at idle, or when the car is NOT moving but you accelerate the engine? If no noise at any engine speed when the car is not moving, the cause is in the drivetrain and could be...
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...
On a 2005 jetta tdi wagon (engine BEW), can the valve cover gasket be replaced or does the whole cover
Hi John: So long as the valve cover is not warped (especially the sealing surface; it must be "flat", in one plane) or otherwise damaged (cracked, etc.), valves covers are re-usable. To request an inspection, and replacement if needed, please...
What should I use to tune my 1998 vw jetta tdi fuel pump
Hi there. The advice you're seeking is something we are unable to offer - as we stick to answering questions on OEM repairs and maintenance options. You might want to consult with a VW performance shop or seek product reviews...
Mk 5 golf stuck in gear at high revs can only change in low revs
Check the gear oil level as a low level can cause or aggravate shift difficulties. If you have the original clutch and slave cylinder, faults there are a likely cause of the shift difficulty. The clutch system should be thoroughly...
My 2003 VW Jetta keeps starting to run hot when I exceed 65mph but then cools down the second I slow down to 60.
If the thermostat is original, replace it (replace it with an OEM dealer supplied thermostat, based on your VIN number, to reduce diagnostic headaches). The cooling system should be evaluated for deposits and blockages. Prior to replacing the thermostat, you...
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...
The glow plug wire harness is not the entirety of the circuit. The circuit fault represented by P0380 could arise in the wiring to the harness that you replaced, including the ground connection. To determine the integrity of the remaining...
Heater core not getting warm. I doubt anyone can identify the issue...
You may want to consider having the heater control valve checked. Since this valve controls the flow of coolant from the radiator to the heater core, if this is not working properly, you may notice a lack of heat being...
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...
What should I expect to pay in repairs on a 2001 VW Golf TDI with 266600 miles on it?
The cost of repair and refurbishment depends on the actual, present condition of the vehicle and such can only be determined based on a detailed inspection. On a vehicle of that age, among the areas of concern would be rust...

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