Hot answers tagged

13

tl;dr: This procedure checks the oil "reserve" remaining in the pan after all moving parts are lubricated. This procedure is purely vehicle dependent. For example, on my car, I'm supposed to check the oil when the engine is cold. In asking you to check when the engine is hot, the oil will not be pooled in the oil pan. Instead, it will have been fully ...


13

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 ...


12

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 ...


11

There's nothing wrong, that's your cruise control icon, it's lit when you activate cruise control. Cruise control won't do anything until you use the set button so it's not a problem, just turn cruise control off, the control is on a stalk left of the steering column. Cruise control buttons are usually on a stalk or the steering wheel. Mercs have an ...


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 ...


7

I took my car to a different VW shop (not the dealership) and they fixed the problem for $160, but if I'd known the solution was just to solder the wires directly together, I could have fixed it myself. I did however, learn what the problem was thanks to them and I'll share the solution here. VW apparently knows about this issue and supposedly offers special ...


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

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 climates:...


6

The fault you describe appears to be a simple matter of 'parasitic drain' on the battery. Disconnect the battery earth terminal, connect a ampmeter between the cable and the battery post. Run the ampmeter to outside of the bonnet and close the bonnet without trapping the ampmeter wires. Make sure all doors are closed, they do not have to be locked. After ...


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

Given what you've said, I'm assuming the rust is in the form of small, dry flakes and dirt. Is the tank fully dry, or is there still some fuel or other liquid in there? If it's dry, you might be able to do something by removing the filler neck and inserting a vacuum hose to suck the loose debris out? Looking at photos on the internet, it looks like there's ...


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

Bulbs - Swap the bulbs, like the comment suggested, with the ones on the other side. If works switch back and get replacement. Fuse - Swap the fuse with another in the fuse box with the same rating. If works switch back and get replacement. Connectors - Check for corrosion on connectors. Clean connectors with fine grade sand paper. Coat in something ...


5

Problems like this are addressed in Charles Probst's excellent reference, Bosch Fuel Injection & Engine Management. From what I can gather, the Mk1 Golf utilizes a basic K-Jetronic system illustrated in the diagram below1 (which operates on the principle of continuous injection). The stalling symptom is an indication that the air-fuel mixture is not ...


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

Found out this actually requires another O-ring, not a gasket. Another O-ring came with new the thermostat and I was able to use that.


5

Your Golf should have two fuel pumps: one for the injectors (high pressure) and one which feeds the injector pump (low pressure). The low pressure pump would reside in the fuel tank. I'm thinking the low pressure pump may be going bad, as in getting weak. If it were starting to overheat, it may not pump fuel like it is supposed to and would cause the loss of ...


5

There isn't an oil source that I can think of by the rear tires of a Mk4 Golf, as pointed out in the comments a brake fluid leak seems much more likely. Brake fluid is normally clear, but it could be dark with contamination or you could be picking up road dirt and grease from the tire. Brake fluid is a very good solvent, so it may also be carrying dirt and ...


5

Just to integrate the comment of Ben and the answer from Chuck: Most of the time the ball joints are riveted to the suspension arm, then you need to drill the rivets to remove the joint. The top of the ball joint gets locked by a pinch bolt. Displayed is a similar design: Just remove the pinch bolt and use a crowbar/similar tool between arm and knuckle to ...


5

Most VW/Audi/Seat cars have a setting for a speed warning, every time you exceed it you get a bleep. It's annoying, but you can turn it off, or simply set it to something high where a warning makes sense. The directions are different for many models, your manual should tell you how your particular one works. There's also this forum's thread which has many ...


4

You can see the corrosion on the pipe around the clip - even if Radweld or similar is able to temporarily stop the leak, I doubt that it'll last very long. At the rate that it's leaking, there is bound to be a bunch of fairly sizeable holes corroded into the pipe. For that reason alone I would change out the pipe as soon as I could. If that breaks (worst ...


4

The Aux port is simply an SPDIF (3.5mm headphone) port that turns your car stereo into an expensive set of speakers for your MP3 player. It doesn't do anything fancy like "communicating" with your device, aside from accepting incoming audio. I don't know anything about your specific car, but generally you switch your car's audio system to Aux-in mode when ...


4

The ultimate answer is "yes". You can paint it lime green with purple polka dots if you really wanted to. If you want to do it right and make it look good, you'll need to: Pull the engine/transmission and separate them. Clean the heck out of the entire assembly. Remove or cover any parts which you do not want painted (such as accessories or intake/exhaust ...


4

Your Golf's turbo has a solenoid operated control to vary its geometry. I remember it as part N75. If this is in any way faulty you will have most of the symptoms you are describing. A hand-held vacuum pump to the turbo's vacuum supply hose will allow you to see the turbo vanes operating correctly. Follow the vacuum hose from the turbo back to the solenoid ...


4

It means that your camshaft position sensor or crank angle sensor is faulty. Either because they are actually faulty, or there is a wiring problem. Clearing the code won't do much. The symptoms of a bad cam or crank sensor are usually rough idling, difficulty starting and misfiring. Which makes sense, because your ECU gets wrong information regarding the ...


4

It's a common problem on the Mk1 that the clutch cable pulls through the bulkhead and the repair plate is usually all that is required, however you may find that this no longer gives you enough travel on the cable. Undo the two interlocking nuts on the gearbox end of the cable and remove them completely. Thread the table through the fork split in the ...


4

OK, so the problem was that, due to a faulty fuel gauge sender, I over filled the tank. And since the seal around the top of the 'hatch' had partially disintegrated, well this happened: When parked on an angle, fuel was just flowing from the top of the tank :/


4

It sounds as though the turn signal switch has gone bad. The contacts inside the switch are probably just worn out. Not sure on your Golf, but I believe these are pretty easy to purchase and to replace.


4

As others have commented - there aren't engine oil lines or a reservoir that contains engine oil near the rear of the car so you can almost rule out your own engine oil as the source. To verify, you could open your hood and check your engine oil level. It could be your brake line that runs into the caliper. Brake lines usually alternate between lengths of ...


4

Platinum is going to work best in this application, because platinum will stand up to the rigors of the LPG better. Iridium would work even better. There are several other types which would work even better, but if cost is a main factor, platinum will work pretty well. There are other considerations you need to take into account, though, as well. I found ...


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