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You should have a look at the “Random Engine Hesitation” thread. Since I posted that, there has been a series of TDI owners reporting that they had the same issue. Since the problem doesn’t generate a fault code, dealers don’t know what to do about it, or how to even find the problem. It’s...

When it won’t start, does the starter motor turn the engine, or does it not even turn? Can you describe the loud sound?

Post #80 has the part number and a link to where I got the sensor. I have no experience with any other brand of sensor. The new one is still working fine.

Permatex Fast Orange and a toothbrush.

Point a leaf blower in there for a minute.

^ I’m glad it worked out for you, except for losing $600.

Does the same circuit with the blowing fuse also supply power to the A/C compressor clutch? I recently had to replace the PTO clutch on a tractor because it would blow as soon as it was engaged. It’s similar to an A/C compressor clutch, just bigger. Use an ohmmeter to check the resistance of...

Any chance you have a dash cam that records when the car is running?

One thing I would be concerned about is if the turbo is damaged, then it is possible that all the oil that normally lubricates the bearing will be just going out the exhaust pipe. You’d soon be low on oil. It depends what’s wrong though, It could be that nothing is mechanically wrong with the...

What does the smoke smell like? For example, is it burning rubber, burning oil, or more like steam from leaking coolant?

Maybe they went and read my thread on the subject to figure out how to test it. LoL. My dealer had no clue.

I wonder if the noise has something to do with the water pump shroud? These cars have a shroud that will cover the water pump impeller when the engine is cold, so it will warm up more quickly because there’s little or no coolant flow. When it gets warm enough, the shroud retracts to allow the...

https://fuse-box.info/volkswagen/volkswagen-golf-vii-mk7-2013-2020-fuses Fuse number 10 under the hood. I can’t wait to hear how it goes.

The engine will randomly lose power for a second, several seconds, or even stall.

Another one… It’s like the 2015 crank position sensors are all failing now. That link posted by pedroYUL was from when my wife’s car developed this problem last year. VW dealer was not capable of fixing it even after being told what the problem was. If you have VCDS you can test the sensor...

Wheel bearing. Jack up the car and see if any wheels do this:

3.5 hours? Wow. They have no shame. Putting the car on ramps, getting the skid plate off, and moving all the hoses and junk out of the way probably took me 15 minutes. With that out of the way, changing the sensor just takes a few minutes. I could probably do the whole job in 30 minutes or...

^ It is disgraceful that VW won’t acknowledge this problem. A car that randomly stalls without a fault code or check engine light is not something they should just be able to ignore simply because they don’t want to figure out what is going on. I figured it out, and I’m just some guy with...

So probably not hydraulic lifters. They should stop rattling in a few seconds unless something is wrong with them (not likely). My wife’s 2015 TDI has always made the same noise, as far as I can remember. So it’s probably somewhat normal, or not serious. I’ll have a listen to hers sometime...

Maybe it’s hydraulic lifters? The pressure bleeds down when the engine is stopped for a while, and then they firm up again when you drive. Their purpose is to maintain clearance between the cam lobe and valve stem. That engine can run the oil pressure at a reduced level depending on operating...