What did you do to your MKIV today?

[norbert77]

Wow, I knew we were dealing with inflation, but even still, a $60̷,0̷0̷0̷ belt seems a tad much.

Dictates software always adds a dollar sign if I say the word thousand. Of course it forgot the mile

 

[The Cream Dolphin]

No it did get the mile in there, I just thought it was funny.

 

[northern diesel]

I'm guessing that most jack-related injuries are related to the car falling off the jack more than the jack failing, but that again - a jackstand is gonna reduce that risk greatly as well.
(as will a 10x10 or 6x6, of course)

Man, all this jackstand talk got me fired up- here’s a pic from today’s rear brake job
https://flic.kr/p/2qr79oH https://flic.kr/p/2qrbzUP Doubling up on y’all’s advice !
There’s even a floor jack under there!
Brake job went pretty good - I had to trim the calipers with a grinder to make room for spacer adapters that are to fit a stupid large bolt pattern.
🫤
It was an impulse buy and now I’m making do- live and learn.
I recently got a smart phone and watched my self control pack up and leave.
I gotta pump the brakes on this Jetta obsession see what I did there ?

 

[The Cream Dolphin]

Alright @Nuje ... I have tried and tried to find it but I am yet another victim of the troublesome search function. I tried site:tdiclub.com in my google search with what I thought would be the right buzz words in many combinations, and searched for a while, would you be able to point me towards your how to for coolant gauge long coding? I want to make mine accurate and recall seeing your post. TIA

 

[[486]]

The serp belt idler is going to get replaced too.

the little plastic guy seems to outlast the tensioner roller at least 2:1 which is funny because nobody seems to sell the tensioner pulley on its own

 

[[486]]

these engines really run much better when you don't run over-advanced... however, whether what you do in the graph here makes much of a difference depends on what is loaded in the ecu and your fueling hardware. too much advance leads to low end torque, most noticeably.

Hey, in your thread on tuning do you ever go into detail on injection timing?
I keep meaning to do a bunch of datalogging runs to figure out the most efficient timing through watching the IQ versus whatever steady state cruise speed I'm at, but it's one of them things that I'll never get around to


ETA: timing in the maps, not on the sprocket

 

[burpod]

Hey, in your thread on tuning do you ever go into detail on injection timing?
I keep meaning to do a bunch of datalogging runs to figure out the most efficient timing through watching the IQ versus whatever steady state cruise speed I'm at, but it's one of them things that I'll never get around to


ETA: timing in the maps, not on the sprocket

i still haven't gotten around to writing up my thoughts/findings on timing.. want to one of these days.

you can use timing adaptation to more quickly test out certain areas (like cruising), however what timing works best will of course be tied to your boost/duration maps you have for those areas, which may or may not be "correct" (as in IQ numbers close to reality)

when i log/drive for efficiency testing i am watching all the relevant numbers - IQ/fuel-consumption+speed, boost EGT from gauge, IAT, spec/actual timing, coolant temp and then the conditions, focusing more on flat/no-wind areas but also other common situations like doing a low-grade incline @ some speed say 75mph. kinda drives one crazy lol.

 

[[486]]

I'm just looking at it as ideal timing being the most efficient conversion of fuel into movement, too advanced is causing cylinder pressure spikes, and too retarded is squirting the heat out the exhaust port (which can be handy for catalyst heating, or waking up a lazy turbine)

doesn't help that VW datalogging is at like 0.5hz

 

[oilhammer]

The ALH doesn't need anything "fast". It's sort of the engine management equivalent of the Apollo stuff. It gets the job done, with very little.

 

[[486]]

I got spoiled with datalogging in the kilohertz range and the graphing provided by that tunerstudio stuff when I did a megasquirt car a while back
that system is just downright magical when compared to beating my head against the wall with the bosch stuff.

you can see the little spikes in map from valve float, it's just amazing when compared to the garbage that scan tools give you

 

[oilhammer]

I would imagine that when the manufacturers (be it the engine and/or engine management) work through the initial design they use as much of the best tech available, and once the design phase is done, the OBD side of things only needs to do so much. But keep in mind, the EDC15 system, the first generation, came about in 1990. How fast were computers then, and who had access to what? There really wouldn't be any sense in making a system that had anything beyond that capability, and to even a "slow" computer the pistons moving up and down at redline are probably like watching water freeze. I'm actually somewhat suprised that the later EDC15 systems even bothered to employ a hot film MAF, as even that seems totally beyond necessary (and some of the newer VAG engines did away with them altogether).

I remember using scan tools that were pre-PC that were little more than a slow interpretation of blink codes put into text on an LCD screen. And when the PC stuff did first come about, we were using MS-DOS stuff through a serial data port just like a dot-matrix printer. It worked fine, because the cars just were not that sophisticated.

Now, these new UDS cars have on-the-fly calculations for the pulses of the timing chain and can display the "stretch" of the chain AND calculate both camshaft phasing (or in the case of the V engines, FOUR camshafts) individually along with the individual valve lift from the little solenoids on the heads above each valve. It really is mind boggling to think of how much stuff is going on in these newer engines. Really makes the VE TDI seem like a dinosaur. Which is exactly why I like them, and why they are so tough and durable.

 

[norbert77]

46 km since she backed out of the garage. Several times I've noticed at low throttle acceleration that it seems like I ease off the throttle and get back onto it, but if there's a dead spot for a couple seconds. How would I check to see if it's a throttle position sensor, or is there something I can run a log for? Seems to be a very low throttle


Also something is different, rolling in first gear if I floor it, it lays rubber, before it used to just briskly accelerate

 

[[486]]

Really makes the VE TDI seem like a dinosaur.

but their internal communication is at high speed just the same
the "smooth idle IQ adjustment" whatever that's active at low rpm shows that, adjusting the injected quantity cylinder by cylinder
vp44 dodges will even use this to do a 3cyl cold idle, snapping the control collar to defuel between cylinders

 

[norbert77]

She left me stranded! 6 years of total reliability with only one blown tire, and she popped the 30m trunk power outlet fuse that powers the brand new fuel pump. Luckily it was at the auto parts store

 

[norbert77]

She left me stranded! 6 years of total reliability with only one blown tire, and she popped the 30 amp trunk power outlet fuse that powers the brand new fuel pump. Luckily it was at the auto parts store.

So the plot thickens, was the fuse just old? It looks like it was a high current blow, the element is in multiple pieces

 

[P2B]

So the plot thickens, was the fuse just old? It looks like it was a high current blow, the element is in multiple pieces

It takes a hard short to ground to do that to a 30A fuse.

 

[Nuje]

Alright @Nuje ... I have tried and tried to find it but I am yet another victim of thehttps://forums.tdiclub.com/index.php?threads/cluster-mods.184867/post-1799947 troublesome search function. I tried site:tdiclub.com in my google search with what I thought would be the right buzz words in many combinations, and searched for a while, would you be able to point me towards your how to for coolant gauge long coding? I want to make mine accurate and recall seeing your post. TIA

Hey - the fact that someone actually remembered and tried the site:tdiclub.com cheat code....that's victory enough right there.

Cluster mods sticky over the UPGRADES (non-TDI engine) sub-forum. Starting at this post:

Cluster Mods

Cluster Mods - Welcome enable the "welcome" cluster message Done this today on my full FIS sport cluster, you change address 417 and change 02 to 6B :) ******************************************************* using vagtacho and the hex editor program XVI32...

forums.tdiclub.com

 

[Nuje]

Hey - the fact that someone actually remembered and tried the site:tdiclub.com cheat code....that's victory enough right there.

Cluster mods sticky over the UPGRADES (non-TDI engine) sub-forum. Starting at this post:

Cluster Mods

Cluster Mods - Welcome enable the "welcome" cluster message Done this today on my full FIS sport cluster, you change address 417 and change 02 to 6B :) ******************************************************* using vagtacho and the hex editor program XVI32...

forums.tdiclub.com

I'll also add that @gmenounos's kw1281test thread has some explanation of how to do it (or at least reference to the above) plus the nuts and bolts of how to read the EEPROM and write it back after editing.

 

[Nuje]

Cluster mods sticky over the UPGRADES (non-TDI engine) sub-forum. Starting at this post:

Cluster Mods

Cluster Mods - Welcome enable the "welcome" cluster message Done this today on my full FIS sport cluster, you change address 417 and change 02 to 6B :) ******************************************************* using vagtacho and the hex editor program XVI32...

forums.tdiclub.com

I'll also add that @gmenounos's kw1281test thread has some explanation of how to do it (or at least reference to the above) plus the nuts and bolts of how to read the EEPROM and write it back after editing.

 

[Nuje]

Cluster mods sticky over the UPGRADES (non-TDI engine) sub-forum. Starting at this post:

Cluster Mods

Cluster Mods - Welcome enable the "welcome" cluster message Done this today on my full FIS sport cluster, you change address 417 and change 02 to 6B :) ******************************************************* using vagtacho and the hex editor program XVI32...

forums.tdiclub.com

I'll also add that @gmenounos's kw1281test thread has some explanation of how to do it (or at least reference to the above) plus the nuts and bolts of how to read the EEPROM and write it back after editing.

 

[norbert77]

^^^ you guys and your coolant gauges, I get a blue cold light that goes out way too soon and a red overheated light... And try to stay in the middle

 

[Fix_Until_Broke]

All this talk about injection timing and efficiency - A few of us were dabbling in this about 10 years ago, see below threads. If you want to find "best" timing, you need cylinder pressure vs crank angle measurements and some sort of feedback on torque output. Then you can find the timing for best torque, best efficiency, etc. This is how the OEM's do it - hundreds of hours on an engine dyno balancing all the parameters (mostly emissions focused). I'll be driving my Jetta this winter and still have (should have?) all the bits and pieces - maybe, no promises...

Pressure Sensing Glow Plug Electrical Connector

This might belong in the For Sale/Wanted section, but I thought it would be more beneficial in here given the usage, so moderators please move this if you necessary. Does anyone have or know where to get the electrical connector for one of the pressure sensing glow plugs used on the new CR...

forums.tdiclub.com

G149 Modulating Piston Displacement Sensor

I'm trying to record this sensor on my DAQ system and need to understand fundamentally how it works so I know how to both signal condition and interpret it. On the surface, it looks like an LVDT, however that's kind of tough with only 3 wires :) I'm guessing that it's a DVRT, but wondered if...

forums.tdiclub.com

WTB - 2003 #3 Injector Wiring + Crank Sensor Wiring

I'm looking for both electrical connectors for a 2003 #3 injector and crank position sensor. I would like to record these signals but don't want to cut into the wires so I'm looking for both connectors so I can make a "junction" to plug in/out my DAQ system. Hopefully someone has a #3...

forums.tdiclub.com

Live Dyno

This started out as an idea quite a while ago from a discussion with Jfettig, but over the last few months, I was able to make it into a reality - Having the ability to monitor engine power on a vehicle, real time, anytime, anywhere. Chassis dyno's are good, but a real pain to take time to do...

forums.tdiclub.com

Hey, in your thread on tuning do you ever go into detail on injection timing?
I keep meaning to do a bunch of datalogging runs to figure out the most efficient timing through watching the IQ versus whatever steady state cruise speed I'm at, but it's one of them things that I'll never get around to


ETA: timing in the maps, not on the sprocket

i still haven't gotten around to writing up my thoughts/findings on timing.. want to one of these days.

you can use timing adaptation to more quickly test out certain areas (like cruising), however what timing works best will of course be tied to your boost/duration maps you have for those areas, which may or may not be "correct" (as in IQ numbers close to reality)

when i log/drive for efficiency testing i am watching all the relevant numbers - IQ/fuel-consumption+speed, boost EGT from gauge, IAT, spec/actual timing, coolant temp and then the conditions, focusing more on flat/no-wind areas but also other common situations like doing a low-grade incline @ some speed say 75mph. kinda drives one crazy lol.

I'm just looking at it as ideal timing being the most efficient conversion of fuel into movement, too advanced is causing cylinder pressure spikes, and too retarded is squirting the heat out the exhaust port (which can be handy for catalyst heating, or waking up a lazy turbine)

doesn't help that VW datalogging is at like 0.5hz

The ALH doesn't need anything "fast". It's sort of the engine management equivalent of the Apollo stuff. It gets the job done, with very little.

I got spoiled with datalogging in the kilohertz range and the graphing provided by that tunerstudio stuff when I did a megasquirt car a while back
that system is just downright magical when compared to beating my head against the wall with the bosch stuff.

you can see the little spikes in map from valve float, it's just amazing when compared to the garbage that scan tools give you

I would imagine that when the manufacturers (be it the engine and/or engine management) work through the initial design they use as much of the best tech available, and once the design phase is done, the OBD side of things only needs to do so much. But keep in mind, the EDC15 system, the first generation, came about in 1990. How fast were computers then, and who had access to what? There really wouldn't be any sense in making a system that had anything beyond that capability, and to even a "slow" computer the pistons moving up and down at redline are probably like watching water freeze. I'm actually somewhat suprised that the later EDC15 systems even bothered to employ a hot film MAF, as even that seems totally beyond necessary (and some of the newer VAG engines did away with them altogether).

I remember using scan tools that were pre-PC that were little more than a slow interpretation of blink codes put into text on an LCD screen. And when the PC stuff did first come about, we were using MS-DOS stuff through a serial data port just like a dot-matrix printer. It worked fine, because the cars just were not that sophisticated.

Now, these new UDS cars have on-the-fly calculations for the pulses of the timing chain and can display the "stretch" of the chain AND calculate both camshaft phasing (or in the case of the V engines, FOUR camshafts) individually along with the individual valve lift from the little solenoids on the heads above each valve. It really is mind boggling to think of how much stuff is going on in these newer engines. Really makes the VE TDI seem like a dinosaur. Which is exactly why I like them, and why they are so tough and durable.

but their internal communication is at high speed just the same
the "smooth idle IQ adjustment" whatever that's active at low rpm shows that, adjusting the injected quantity cylinder by cylinder
vp44 dodges will even use this to do a 3cyl cold idle, snapping the control collar to defuel between cylinders

 

[norbert77]

Do you want a simple way of getting efficiency? Get a Scan gauge 2. It measures fuel use, every time you fill up you punch in how many gallons, and it will get 100% accurate. Even without that, it shows gallons per hour, average, and instant on any car. All you have to do is set it up, run to whatever rpm, check gallons per hour usage, check other rpm, record, then make timing adjustment and do over. It wil literally give you 2 decimal places of use to show your improvements, or do it in metric for finer gradient.

 

[PakProtector]

Fix_Until_Broke, do you need any funding to acquire bits? gadgets? misc instrumentation? I would love to contribute to your research.

Douglas

 

[csstevej]

Well ….. I washed and waxed my DD …lol I usually let Mother Nature do the washing but we haven’t had rain here in over a month….. set a new record for no rain

 

[Fix_Until_Broke]

norbert77 - ScanGauge is great for macro view (I've a couple of them), we're talking about measuring cylinder pressures and shape for each combustion event, so micro view. You can find little things in the micro view that will be very difficult/impossible to quantify in the macro view.

PakProtector - I'll reach out to the community if I need anything, Thanks for the offer. If you can make my 60+ hour/week job be more like 40, then I'd have some time/motivation to get back in to this

 

[The Cream Dolphin]

Hey - the fact that someone actually remembered and tried the site:tdiclub.com cheat code....that's victory enough right there.

Cluster mods sticky over the UPGRADES (non-TDI engine) sub-forum. Starting at this post:

Cluster Mods

Cluster Mods - Welcome enable the "welcome" cluster message Done this today on my full FIS sport cluster, you change address 417 and change 02 to 6B :) ******************************************************* using vagtacho and the hex editor program XVI32...

forums.tdiclub.com

There we go, thanks so much! I remember you posting it a while ago, I thought it was your how to, but this is the one I had in mind. I swear I tried so hard to find it, I never thought to search cluster mod. I was hoping after time this would now seem like something I could pull off, but I will chalk it up to the "deep out of my comfort zone" category Thanks a lot for finding it for me!

 

[Nuje]

There we go, thanks so much! I remember you posting it a while ago, I thought it was your how to, but this is the one I had in mind. I swear I tried so hard to find it, I never thought to search cluster mod. I was hoping after time this would now seem like something I could pull off, but I will chalk it up to the "deep out of my comfort zone" category Thanks a lot for finding it for me!

I know the "flipping bytes-->convert to decimal and back" can be a little daunting. For sure I had some serious learning pains getting through that.

If you can get the cluster EEPROM read, though....I bet that If you were to create a "help with my cluster EEPROM" thread and posted your EEPROM (link to the .bin file) and ask for help, someone here could help you out.

 

[The Cream Dolphin]

I know the "flipping bytes-->convert to decimal and back" can be a little daunting. For sure I had some serious learning pains getting through that.

If you can get the cluster EEPROM read, though....I bet that If you were to create a "help with my cluster EEPROM" thread and posted your EEPROM (link to the .bin file) and ask for help, someone here could help you out.

Thank you Nuje! I am starting a path of research here, and hopefully I can get there. Starting with seeing if OBDeleven can do EEPROM. I know I know, it is not the right tech, but I have never had a computer and struggle to use them, while I am proficient with my phone. Every path starts with the first step.

 

[BobnOH]

Use this user contributed google hack

Programmable Search Engine

cse.google.com