r/tdi

2013 Passat tdi. I’ve replaced my boost sensor two times before between months. My original sensor seal broke and it was spraying oil all over. So i replaced with a cheap rockauto one. It didn’t work for that long. Then i replaced with a vemo one from rockauto for 60$. That too gave up last day after running for 4-5 months maybe. I have the original sensor with me and it still works, just the seal and covering is broken. When i checked with original sensor, codes are gone and no issues except maybe oil spraying out after a while. So should i get a vw one for 220$? Is it the sensor itself or something else damaging the sensor. I’ve also seen bosch sensor for my car, will that work?

Hi everyone,
I have a 2002 Skoda Octavia MK1 with the 1.9 TDI ALH engine (66 kW). Recently I replaced all the old cracked rubber vacuum hoses with silicone ones because they were brittle and one already had a hole. I replaced them one by one very carefully, no lines were mixed up.
Background: The reason I changed them is that the car previously went into limp mode due to the broken hoses. My dad temporarily put back one critical line (I think the Y-splitter that goes to the N239 ASV or the check valve) and the car pulled extremely strong again.
A while ago I also noticed the car started acting weird after a pull

(Turbo is very fresh only one year old, and ive been taking care or the car, almost always driving 55km not short distances)

Current problems:

1. Boost issue
   • Cold engine: Almost no boost at all until ~2100 RPM. On OBD I see only -0.07 to -0.03 bar.
   • As the engine warms up, boost gets better but still delayed.
   • When fully warm:
   • Light throttle → some base boost from ~1600 RPM
   • Floored → real boost only comes after ~2400 RPM
   • After 3000 RPM it finally reaches 1.00 – 1.15 bar
   • Vacuum reading: around -0.99 inHg

2. Jerking / shaking I also replaced the lower dogbone engine mount because it was worn and loose. The car felt great for the first 2 days after the mount change.
   Since the vacuum hoses were replaced (about 1 week ago), the car now when i turn it off it shuts off roughly

What we already checked:
• Removed the intercooler pipe on the EGR → inside was golden with minimal gunk, slight smoke came out, and it was dripping a tiny bit of oil.
• Unplugged MAF → almost no difference in behaviour.
• Cleaned the MAF sensor with petrol → no real improvement.
• Tested the ASV (N239) → it sucks in about 1 cm when I turn odf the engine, and AI said it should stay like that for a good 3seconds it just stays like that for 1maybe nit even that much

For now i will be cleaning the EGR with cleaner eith my dad and the intercooler, dad said maybe it collected some oil too

What should i check out? or anyone has an idead whats happening

Turns out you can [sorta] off road a front wheel drive TDI on Bilstein B6's and sport rims :P

Was buying some small accessories pieces on aloe express when some other parts caught my attention. Has anyone actually bought parts from them?

Picked up this 2012 TDI over the weekend as a dog and Lowe’s hauler. It seems in pretty decent shape for 162k miles. No idea when any of the fluids or filters were last done, so have all of that on the way from FCP. The Carfax suggests that the timing belt was done at 120k miles, so hopefully that is the case. Sorting through the delete/tune options as I’m sure that’s only a matter of time before I cave on one of those.

Hi, I’m Jetta TDI 2013 has a lot of hesitation when I accelerate and once I’m in highway around 60mph 100kmh it want to stop, feels like exhaust is clogged, the heating coil light flashes on dashboard and whole engine shakes when I accelerate (limp mode?), when I turn it off and on I goest back to hesitation mode but I can go till 60mph again… got some codes but p2015 and p2008 are here. Don’t know if dpf failure… do I go downpipe and tune? This is my first TDI

Any help that you all can offer would be really appreciated.

New to me 05 PD.

Whines on acceleration.

Seems low power to me (I had an 02 a while back).

WTF are all these connections that were disconnected and some with jumpered wires??

https://imgur.com/gallery/tdi-running-zIewykK

https://imgur.com/gallery/tdi-whine-jFaoFvq

I’m thinking about putting a cold air intake on my car, I’ve had it stage 2 tuned and deleted, is there more that I have to do for the intake or can I just toss it on

so i have a mk1 skoda octavia 2002, 1.9tdi 66kw alh

and ive been switching to silicone vacuum tubes cause the rubber ones were giving out, my turbo not charging just from 2100 rpm and the breaks are weird sometimes

and now somehow its even worse after switching could somebody help if the lines are connected correctly

Having some issues getting infinity tweeters to work in my '12 JSW. I was under the impression this car did not have the fender audio system so I went ahead and installed a alpine 4 channel amp for the door speakers and a monoblock amp to run an old alpine type r i had sitting around.

Much to my surprise everything worked the first go around but I found that the door speakers were holding back the amp so I bought kicker door speakers and installed them. Oddly enough they didnt sound much better and slightly more tin can toned than the factory paper speakers but they improved with time

Today I started installing the infinity tweeters. They came with their own inline crossover to tie into the midrange speaker and upon trying them no sound was coming from the midrange or the tweeter.

Did a resistance test and continuity test on both speakers and everything checks out. Looking at that strange triangle pictured I figured it was some kind of factory crossover for the front doors' woofer/midrange/tweeter but Google describes it as an amp? How could it have worked with the door speakers and factory tweeters beforehand?

Im puzzled and about to take it to a pro shop tomorrow. Im an obsessive DIY guy but this has me stumped. Any advice or past experiences would be appreciated

Ive been chasing a knock on my 02 jetta with the ALH TDI and auto trans. Heres a list of everything ive done. If anybody has ideas as to what else it could be, PLEASE HELP. Here are some videos, forst one is without knock, next 2 are with knock, and another showing boost and oil pressure while driving(there was an owner between us so there’s a gap of knowing what went on with the car)

Head gasket
Rod bearings
Main bearings
Starter
Timing belt & pulleys@265k
Water pump
Steel bottom oil pan
Cupholder console conversion
All vacuum lines
Turbo actuator
N75 valve
Injector return lines
Rebuilt Injectors with .205 nozzles
Serpentine belt
Fuel filter
Complete EGR delete
Electric fans
Majority of coolant hoses
Both plastic coolant flanges on motor
High pressure injector lines
Cam
Lifters
Thermostat
T fitting on fuel filter

Edit to add: also has a hard time starting, i have to bleed the injector lines and then it starts pretty easily every time it sits for 30 minutes or more, but runs just fine

Front end collision, it got stolen from the shop's parking lot that was repairing it *by my insurance* where they attempted to illegally auction it, got it back in pieces, spent the last few weeks repairing it in our apartment's parking lot, and now we're back on the road. I forgot how much fun this thing is to drive and I'm having a victory beer about it.

Long live the Moldswagen.

Recently have been noticing loud vibration when at highway speed from from drivers side of my 2014 MK6 sportswagen tdi. Recently just got summers on and tired balanced. The car drives like it has an unbalanced tire even though I just got all balanced and steering hasn’t been tight.

Jacked it up and found this small crack on and steering knuckle as pictured. My question is how soon should I change it, and are there any other components or reasons that could have caused this? Lastly I’ve been starting to wrench more is this a complex job and are there any other parts I should swap out in the process.

I’ve had a couple lights that kept popping up on my dash that I had boiled down to a low voltage issue, but I just had a bunch kick on and now here I am. So let me know, am I cooked?

Made a post earlier but my picture didn’t post for some reason, but here’s my MK5 Jetta, I’ve had to do various things to this car over the years, only major stuff has been a flywheel and clutch pack for the tired DSG, I’ve put several sets of lifters in it, along with a few camshafts, a few years ago I put a pd140 on it when the stock turbo gave out, otherwise it’s just had routine maintenance, I bought this car with 187k on it, it is deleted with a stage one tune, I drive it to work 5 days a week, it has been such a great car, I feel it’s important to note that these are miles not kilometers there are many many parts on this car that are unbelievably original, notably things like the cv axles, the rear wheel bearings, all engine, and almost all transmission internals, that said it has multiple wiring gremlins, many I’ve just learned to live with, some things I’ve just disabled completely to keep them from being a nuisance, the ac, heat, heated seats and cruise control all work what more could a person ask for at over a half million miles