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7

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 ...


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 ...


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

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 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 ...


4

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 ...


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

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 ...


4

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 ...


4

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 ...


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

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 ...


3

Have you checked for a blown fuse? You may also be able to reach the release either by reaching into the wheel well or removing an interior panel. Another option is that the latch is released but the spring that pops the door open is broken. Have an assistant try to open the door while you actuate the switch.


3

If the wrong tension is on the belt one of two things could happen Too loose: Skip a tooth or two on the belt - this leads to early/late firing and possibly pistons slapping on to valves if the clearances are already tight. Too tight: extra tension put on the belt - this can lead to bearings being incorrectly loaded and at worst a failure in the belt - ...


3

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.


2

Are you sure the springs are the source of the squeaking? It could be some other moving part of the front suspension, perhaps with a worn bushing.


2

After properly taking it apart, I learned the plastic mounts were actually broken and the "glue" that was there was likely do to a previous repair job. I went to a local WV dealer to get the part replaced and they informed me that they no longer manufacture that part. Bummer! After additional inspection, I learned that the flat-headed bolts, which the ...


2

tl;dr: Consider new tires instead. If you provided a little more information, the answers might be more focused. That said, here are my short answers: No and too much. Longer answer: Let's think about some goals and parameters: How rough is "a little rough"? Annoying for you? Or just the passengers? Are you losing fillings? Teeth? Do you care ...


2

Had similar issue in Skoda Felicia (which is much like an older Golf) I own. Check these steps: Close the salon heater. Start the car, wait till coolant gets to its normal temperature. Now open salon heater to the max and check if it readily blows hot air. The air will be hot at first, but quickly loose temperature. Close the salon heater, wait ~5-7min and ...


2

All sorted. As Timo said, there was loads of corrosion and Radweld wouldn't have stood a chance! The VAG part number is 037121065H. I initially got 037121065L but it didn't have a port for the heated inlet manifold!


2

If you can work it under the spoiler, dental floss would probably work. That will take care of the adhesive and it should come off if there aren't any bolts holding it on. Update I've never done this myself, but on the make/model specific forums I frequent, I've seen dental floss and fishing line recommended. Though going back and searching, it seems ...


2

The thermostat will open/close when reaching certain temperature. If it does not work properly you can see some of the symptoms you currently have. This is, usually, not an expensive part to replace.


1

P0404 DTC is your EGR valve control circuits are incorrect. Your EGR valve may be staying open or staying closed. The EGR system needs to be checked and rectified. Leaving this repair is not a good idea. The next fault it will cause will be to destroy your DOC, (diesel oxidation catalyst). This will be followed by your DPF, (diesel particulate filter). As ...


1

It certainly sounds like an earthing issue, but I doubt it would be in the headlight clusters - I'd expect it to be in the rear lamp clusters somewhere. IIRC the Golf has a combined tail and brake lamp, so both filaments will use a common ground. Generally rear clusters earth through a pressed metal frame that forms part of the bulb holders (as the bulbs ...


1

There was a piece of instant gasket (from the water pump replacement last year) in the circuit. This was leading to pressure coming back up into the reservoir and pushing water out of the pressure release valve, which is why I was losing water. Also the radiator may have been a bit blocked but we flushed it backwards and that seems to have got rid of the ...


1

You will note that most OBD software tools rarely display more than 4 or five outputs per view. I've also run into problems when trying to read too many values at once. Speaking from experience, I would suggest working out a strategy for polling different values. For instance you really only need to poll Vehicle's speed every 2 seconds. RPM every 1 ...


1

On some cars the fan for the heat, defrost, a/c does not have an "off" setting. The fan runs on low speed whenever the car is on. It is possible that the ignition switch is worn allowing the key to be removed with a set of contacts still partially engaged. If you turn the key to the "on" position turn the blower motor on high. Find a spot under the dash ...


1

You may need to have the key reprogrammed. I believe that if the vehicle does not recognize a key that has been inserted into the ignition, because of the immobilizer, it will not allow the key to activate the ignition even if the key has been turned. The immobilization method varies between makes and models but this is the general principle. On older ...


1

I had similar issues with American-spec 2.0 ABA motor. Now that you had clarified that it still occasionally starts, broken timing belt is not the issue. The proper tune-up, however, might be in order. The problem I had was due to the fact that my spark plug wires were worn, and reacted poorly to damp environment. More likely, because of deteriorated ...


1

To start a petrol engine you need three basic things - compression, fuel and spark. If it won't start, you're probably missing one or more of these. Does it sound normal when you turn it over, or does it spin excessively slow or fast? Immediately after trying to start it, smell the area around the exhaust. Can you smell unburnt fuel? The big puff of smoke ...



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