The glow plug wire harness is not the entirety of the circuit. The circuit fault represented by P0380 (https://www.yourmechanic.com/article/p0380-obd-ii-trouble-code-glow-plug-heater-circuit-a-malfunction-by-brady-klopfer) could arise in the wiring to the harness that you replaced, including the ground connection. To determine the integrity of the...
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...
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...
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...
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 (https://www.yourmechanic.com/services/loss-of-power-inspection) performed by a...
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...
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 (https://www.yourmechanic.com/question/changing-the-glow-plugs-by-steven-d)...
Hi and thanks for your question. The brake booster (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-brake-booster-vacuum-pump) is vacuum operated and only aids in the stopping force to the driver's foot pedal. If vacuum pressure drops, then the foot pedal feels very firm, just like stepping on...
This is a known issue in the Volkswagon Jetta transmission. Converter drain back is a situation where the automatic transmission fluid drains back into the transmission pan causing this kind of a reaction. Some of this is normal, but not...
There is a common problem with this specific year and engine of VW TDI's. The camshaft material is not hardened enough, which leads to abnormal wear of the lobes and damage to the lifters. The fuel injectors are also controlled...
Your problem may be something simple or more complex. The first thing that needs to happen is for the Diagnostic Trouble Codes or DTC's to be read and addressed. There are only a few things that can put your car...
The A/C and heat are two separate systems, so usually I would look at the blower and its circuit. But since you say the blower is working properly, I suspect a problem with the blend doors or possibly the automatic...
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...
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...
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...
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...
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,...
Hello. This may potentially affect fuel economy due to the fact that this introduces more oxygen into the exhaust flow. When this happens, the oxygen sensor will detect additional oxygen flow which will cause it to relay this to the...
The most likely cause of this is seizing wiper linkage/transmission. This is the part that the wiper motor attaches to, and actually relays the wiper motor motion into movement of the wipers. This problem is very common for VW's. You...
Hello. The most common cause of this is low fuel pressure caused by a dirty fuel filter. If that has not been replaced recently, then I would typically start with that. I would also scan the computer for codes to...
