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5

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

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

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 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 ...


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 - ...


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

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

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

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 ...


1

Here is the explanation for the P0404 code, which is a generic code: If you have a P0404, then the EGR valve is likely an electrically controlled EGR valve instead of a vacuum controlled EGR valve. Also, the valve will usually have a feedback system built into it that informs the PCM (Powertrain Control Module) what position the valve is in; open, ...


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

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

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

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 ...


1

You shouldn't need to turn the key so hard it breaks. Most newer vehicles will lock the steering wheel if you turn the wheels without the key in the ignition. Basically, keep doing what you initially tried but don't turn the key so hard. Just keep jiggling the steering wheel back and forth, pump the brakes a few times and gently turn the key. This ...


1

If the fishing line doesn't work try fishing leaders. Fishing leaders are available that are made of small diameter steel cable. It is available in measured lengths or by the spool. They come in various strengths and are nylon coated which should protect the paint. I have used them to cut thru windshield adhesive. Park the car in the sun for a couple of ...


1

Usually what happens is that the spring falls out. I've had this happen in both my cars. I've been able to open them by sticking my keys in the top opening and popping the open lever real quick. Then, retrive keys from ground and fill up car (until a new spring can be purchased and installed). :-) I hope that's all it is, but it's certainly possible ...


1

You could check the temperature of the hoses going to and from the heater core from the engine side of the firewall when the vehicle is warm and with the heater on. If both hoses are warm, then you are getting coolant flow through the heater core and your problem is likely inside the vehicle with the air control flaps, possibly the foam seal has come loose ...


1

A smoking engine is going to ensure an emission test failure pretty much anywhere these days... Can you see the engine smoke when it's idling for a while and/or when you rev it? Worn piston rings certainly would a good reason for a smoking engine, but it can also be something fairly simple like worn valve guides or worn valve guide seals. Either way you ...


1

There is just one fuel filter. The diagram on this page shows it located off to the side of the fuel tank (it is marked with a 7): http://www.wagenstad.com/index.php?modid=224&page=2-201-40



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