Hot answers tagged

12

The recall is not to remove the cheating logic; it is to actually make the engines meet emissions requirements so they do not violate the law any more. From Autoblog's initial article on the scandal: Volkswagen intentionally installed software in nearly a half-million diesel vehicles that helped the cars evade substandard results on emissions tests, the ...


11

I have both a 2004 Bora TDI (Jetta Mk4 in the US) and a 2012 Mk6 TDI Golf. When either of these cars requires it's warm up system, it will automatically switch it on for the time it needs. This is signified by the glow plug light illumination on the dashboard: Once it's up to the temperature it requires, the light goes out and the car can be started. I ...


10

It is the sound of the fuel pump priming and pressurizing the fuel lines, which is absolutely normal. VW likes to use the opening of the driver door to trigger fuel rail pressurization. In fact, one could use the absence of the sound of the fuel pump as a tell-tale sign that the fuel pump relay is not functioning properly. As @Paulster2 points out, either ...


9

This sounds like a problem with the coolant temperature sensor. Don't worry - replacement is cheap and can be done easily by yourself or a friend who worked on cars before. Cause Cold engines need more fuel to start than warm engines. This is due to the fact that a part of the vaporized fuel condenses at the cold cylinder wall inside each cylinder. This ...


8

Personally I wouldn't be all that concerned unless the oil leak was large. One simple check for the state of health of the engine would be to take the car to an independent mechanic and have a compression test done. It won't catch everything that could be wrong with the engine, but if the compression test comes out OK, it can provide you a bit more peace ...


8

We have a Mk4 TDI Jetta that makes a sound after startup that might be described as a sneeze. I'm fairly confident that it's the starter motor's overrun clutch. As soon as the engine "starts," it begins turning faster than the starter can turn. For this reason, starters have a one-way clutch, called an overrun or sprag clutch. This permits the starter to ...


8

I read on a forum that the issue could be down to certain earth wires. When depressing the clutch pedal, you may be earthing a electrical line going to the sound system which in turn stops the music. There are various earths located in the engine bay. Check around the inner wings etc and make sure all of them are tight.


7

CAUSE As it turns out, after further investigation a coin had fallen in to the lighter and caused a short circuit at some point in the past. FIX To fix it (at least in my case - the most common problem), you need a new 15A (blue) automotive fuse and a flat head screwdriver (or anything to prize off the fuse box cover). In my car the fuse box is located ...


7

Diagnosing noises when you're thousands of miles away isn't going to be easy, but here are a few tips to help you out: remove the serpentine belt and run the engine If the noise stops, you know that the noise source is something that is running off the serpentine. inspect the belt for loss of tension Loose belts are notorious for squealing spin the ...


6

Is the clutch cable operated or hydraulic? On hydraulic clutches that's a common symptom of a failing master and/or slave cylinder(s).


6

Other possible sources: Vacuum Leak Other Ignition item (Plug Wires, Distributer, etc.) Really poor fuel Air Filter Blocked Exhaust Blockage I would start with the spark plugs. Take them out and see if they can give any indication as to the true problem. See this answer for more info (While you have them out, replace them if you need to). Then start ...


6

ELM documentation indicates that this is not a query-only problem. I see on page 31 of that document that the issue was that of the rate at which J1850 requests arrive at the OBD system (this is a consequence of the April 2002 update of the J1979 standard). Specifically, they warn you against querying at rates higher than 100 milliseconds (also known as 10 ...


6

Found it was because a bolt holding the steering rack in place had sheared. Very dangerous and glad I decided to visit a mechanic!


6

As I understand it, there was a fundamental redesign in the cars from around 2002 onwards. Unfortunately that doesn't help you but I wonder if it is possible to retrofit the later model fuse box. Thank you for the picture, this has cleared things up. The fuse that has melted in your unit is S177 which is wired to the alternator. Apparently as the cable ...


5

I don't know the specifics of that car, so I'm going to take a stab and assume we're talking about coil springs. Springs only squeak where they contact something else, which is why spraying them didn't help. If you can't see anything else in contact with the spring have a look at the top and bottom seats. Those seats sometimes wear. Not necessarily all the ...


5

If you live in a wooded area there is little you can do as far as a permanent(non lethal) solution. The problem seem more likely if the vehicle is driven infrequently. I have heard that some rodents have a dislike for the smell of cedar. You can purchase cedar wood blocks for moth protection in most department stores. I would place a few in stategic places ...


5

tl;dr: Your radiator cap might be working as advertised and releasing a bit of overpressure. The difference is points one and two is telling. In point two, you're explicitly staying out of boost on the turbo. Steady state cruising really doesn't require the turbo to spin up. In point one, you're explicitly relying on the turbo quite a bit. This is going ...


5

You should have been charging on the low side not the high side. But it's actually good that you weren't able to top off the system. You should never use that stuff in any car AC system and it's outlawed in the states. This is a flammable refrigerant! From the SDS (Saftey Data Sheet) AUTO – IGNITION TEMPERATURE: 1585 F FLASHPOINT: -34 C LOWER ...


5

Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters. The part after the 'x' is the pitch -- how many threads there are per some unit of length. To figure out which you have, you can measure the existing part with calipers and a thread gauge. You might also try calling ...


5

There are a few ways to resolve this dent issue as the others have indicated. Another Possible Method glue these plastic ding tabs to the dents. You can find them by googling "plastic ding tab" You will use a hot glue gun and hot glue them to your various dents. Use a dent puller slide hammer. The tip should screw into the plastic ding pullers. ...


5

Dimensionally, the two tires are the same. The only difference between the two is the speed rating: H indicates that the tire can be safely used for speeds up to 130 mph (210 km/h) T denotes tire suitability for speeds up to 118 mph ( 190 km/h ) So in terms of compatibility the new 'H' tire should be fine. The low pressure may be due to: ...


5

It is most likely that this sensor has failed. The question is why does the MIL only come on above 70mph. The answer lies not in the sensor but how and when the sensor is tested by the PCM. Every sensor (and actuator) in the engine control system is tested by the software, but not all the time. Each sensor has its own set of test entry conditions; each OEM ...


5

The fact that you can here some noise from the door with the inoperational lock is an indication that the wiring is fine. There is a good chance that the door lock actuator has gone bad and needs to be replaced.


5

If you have a volt meter that you can connect to the battery you will be able to check the alternator. Before starting the engine, check the battery voltage, it will probably be a little over 12v. Now start the engine and turn on your headlights to draw some power. If the alternator is working, the battery voltage should now be between 13.8 and 14.4 ...


4

This seems to be the clutch is going out or possibly the synchromesh is no longer working. The clutch is unable to fully disengage the engine from the transmission to allow you to shift into reverse. If the synchromesh is no longer working fully, this would make it harder to shift in every gear but it's still possible. You are, in essense, ...


4

I'd say that was pretty low mileage. I generally work on a ballpark figure of 10-12k/year, so I'd expect an average 10 year old car to have at least 100k on the clock. The things to watch for a low mileage car is that maintenance may have been neglected, especially if it has been standing unused for any length of time. Check the maintenance records to make ...


4

Golf TDis (and I'd imagine other VWs of that era) are notorious for the Turbos failing. It can be a very expensive fix once it goes properly, so I'd get it investigated asap. From your description, I'd surmise that oil is seeping through one of the seals into the turbo, then when you rev the engine and the turbo spools up, the oil that has accumulated at ...


4

Have a look at your owners manual if it states a maximum oil consumption. I don't think that 750ml over a whole oil change interval is a lot. My guess would be that it's more likely an issue with the turbo and investigating if it is shouldn't be that expensive. Essentially you or your mechanic would need to pull the pipes going from the turbo to the intake ...


4

It looks an awful lot like you have diagnosed all of the really hard problems and come up negative. I wonder if you have a simple mechanical problem: is the linkage sound between the hot / cold selector and the flapper valve that forces air past the heater core. From what I hear, the foam around the flapper is also prone to disintegration in humid ...


4

Disadvantage is that tampering with emissions systems makes a vehicle no longer street legal. Other than that, it probably won't hurt anything at all. I don't see how removing EGR will increase power though. EGR closes at high power settings anyways. The gain would be entirely from some other feature of the racepipe (perhaps it's bigger). The fact that ...



Only top voted, non community-wiki answers of a minimum length are eligible