What did you do to your MKIV today?

[[486]]

My understanding is that over 1600 RPM the ECU dictates pump timing, not the mechanical setting. As long as the pump isn't so advanced or retarded that the ECU can't achieve the timing written into the tune, it will do what the ECU asks.

any time the case pressure valve isn't at maximum or minimum duty cycle
if it is somewhere in the middle then the ecu is telling the pump when to do the squirty stuff

 

[jmodge]

Ha, my pump is so retarded, even Forest Gump is jealous. But it's retarded per my tuner/@burpod's suggestion. Definitely made a big difference in fuel economy on both Golfs, as well as power.

By the look on it's face, your dog appears to be questioning your sanity at that moment

 

[AndyBees]

Heat/AC Blend doors on my formerly owned 2000 Jetta TDI
My son owns it now......... 400k miles on the clock!

 

[northern diesel]

Pepermint oil driped onto cotton balls. Place the cotton balls in various areas of the engine bay. Re-apply as needed, once a month is probably plenty for over the winter. I usually apply in the fall and then don't touch it till spring, but if your driving the car pushing air over them maybe more would be better every now and then. I've used this for everything that sits and seems to work well.

If that fails to do the trick- you could try using sound waves - just a small Bluetooth speaker with a never ending playlist of grateful dead concerts under the hood - that would surely drive them away- might attract other undesirables though

 

[jmodge]

Just don’t play AC/DC, they’ll rip everything apart

 

[csstevej]

If your gonna play Grateful Dead they will be too stoned to chew up anything…..

 

[GlowBugTDI]

My brother in law sent me this photo at around midnight this morning. He smashed an 8 point buck at 70mph.

View attachment 140941

At least its still savable! Couple new parts and it'll be ready for driving

Glad he is ok!

 

[wonneber]

Happen to remember which Kenwood model speakers?

Sorry, to long ago.
Grey matter in my head isn't what it use to be.
They were from Best Buy clearance.

 

[jmodge]

My brother in law sent me this photo at around midnight this morning. He smashed an 8 point buck at 70mph.

View attachment 140941

He should drive slower, wouldn’t waste as much meat that way

 

[Mozambiquer]

He should drive slower, wouldn’t waste as much meat that way

I try to tell him that... Though he was on a 4 lane highway with a 70mph speed limit, I guess...

 

[jmodge]

I try to tell him that... Though he was on a 4 lane highway with a 70mph speed limit, I guess...

Expensive hunting trip, He might be looking at one of those extra cars you have

 

[GlowBugTDI]

Expensive hunting trip, He might be looking at one of those extra cars you have

Ya, even with my two tone beetle I've decided I'm only not stopping if its over 14pts. Maybe 12 if its wide enough... lol.

 

[snakeye]

Better drain that intercooler too. That car is just strugglin! When I bought my 01m alh I prayed that the intake was clogged, because man was it slow. 16+ second 0-60. Sure enough it was clogged, not quite as bad as yours though.

Good call. Draining the intercooler was a pita, but glad I did it. Below is what did not accidentally pour out onto the garage floor.



Here's my intake and EGR cooler post cleaning:



Method used for the intake cleaning was a few cycles of oven cleaner soak followed by a good shake with hot water, dishwashing soap and glass gravel (with the runners closed as seen below). The EGR cooler needed a steel wire and a lot more patience as half of the channels were clogged their entire length.



Feels like a completely different car now. The engine has come alive, and blew out a ton of soot that has accumulated in the exhaust. Was quite the show.

 

[reince]

Heat/AC Blend doors on my formerly owned 2000 Jetta TDI
My son owns it now......... 400k miles on the clock!

Sounds like it still going strong!

 

[AndyBees]

Sounds like it still going strong!

Yeah, my son uses it as a relay vehicle. He's an engineer with CSX.
It had 335k miles on it when I gave it to him 10 years ago. I was putting 36k miles per year on it until I retired in early 2008. Then I added about 18k per year for the next 6 years. It has been a pretty good ALH with lots of power for no tune.

 

[GlowBugTDI]

Good call. Draining the intercooler was a pita, but glad I did it. Below is what did not accidentally pour out onto the garage floor.



Here's my intake and EGR cooler post cleaning:



Method used for the intake cleaning was a few cycles of oven cleaner soak followed by a good shake with hot water, dishwashing soap and glass gravel (with the runners closed as seen below). The EGR cooler needed a steel wire and a lot more patience as half of the channels were clogged their entire length.



Feels like a completely different car now. The engine has come alive, and blew out a ton of soot that has accumulated in the exhaust. Was quite the show.

In the future you could always drill a very small hole in the lowest point of the IC and then use a screw to seal it up. I have done this on both my cars and it makes future drainings super easy. I do it maybe once a year or so. With my driving they usually stays pretty clean though.

 

[Sting]

In the future you could always drill a very small hole in the lowest point of the IC and then use a screw to seal it up. I have done this on both my cars and it makes future drainings super easy. I do it maybe once a year or so. With my driving they usually stays pretty clean though.

You wouldn't happen to have a pic of that, would you? I've never drained it, but figure it's worth a go. Machine screw or wood screw?

 

[GlowBugTDI]

You wouldn't happen to have a pic of that, would you? I've never drained it, but figure it's worth a go. Machine screw or wood screw?

Can when I get home probably. Doesn't matter, mostly just attempting to stop the loss of air. I have used sheetrock screws and pan head screws. anything that will stay in place. Drill the hole smaller then the threads for tight fitment and don't use a self tapper.

 

[burpod]

My understanding is that over 1600 RPM the ECU dictates pump timing, not the mechanical setting. As long as the pump isn't so advanced or retarded that the ECU can't achieve the timing written into the tune, it will do what the ECU asks.

That's not true.. the 1600 number is about when idle stabilization stops (per franko6) and that number sounds plausible. The physical pump timing window is always "in effect" , but you have to log 004 (on a normal tune) to see it . When pump is too advanced you'll see lower rpm timing be higher than spec (usually speaking) if it's too retarded you'll see higher rpm actual timing not achieve spec. What pump timing the pump can make will depend on health of the pump and where it's set. Whether or not any of this means anything is a different matter as far as if it's good or bad. Depending on the tune and the pump setting

 

[AndyBees]

@burpod ...... good advice! Now, check you messages!

 

[pkhoury]

By the look on it's face, your dog appears to be questioning your sanity at that moment

Nah, probably not. She just loves every chance she gets to be with me.

 

[KrashDH]

In the future you could always drill a very small hole in the lowest point of the IC and then use a screw to seal it up. I have done this on both my cars and it makes future drainings super easy. I do it maybe once a year or so. With my driving they usually stays pretty clean though.

I did this on my OEM intercooler and then my Taco Taco version too. I think I used one of those aluminum roofing screws that has thr built in rubber gasket for the OEM.

You can also use a standard SHCS with one of those sealing washers (has the rubber on the ID to seal on the minor diameter of the screw threads. I used this method for the aluminum intercooler that I drilled and tapped

 

[Nuje]

I think I used one of those aluminum roofing screws that has thr built in rubber gasket for the OEM.

Brilliant solution. I've just used like a spare T25 fender liner screw with some Goop™ in the past, but that gasketed screw is a far more elegant solution.

 

[03TDICommuter]

In the future you could always drill a very small hole in the lowest point of the IC and then use a screw to seal it up. I have done this on both my cars and it makes future drainings super easy. I do it maybe once a year or so. With my driving they usually stays pretty clean though.

Me too.

 

[IndigoBlueWagon]

I can't help but think that if you have to drain the intercooler with any frequency you have another problem that you haven't addressed. I never have to drain the intercoolers on any of my TDIs.

 

[hey_allen]

My only recent task was that I finally located where my coolant was slowly disappearing to, when it turned into a loss of a quart in 10 minutes.

The outboard heater core connector was streaming coolant down the noise deadening and thermal barrier on the firewall, next to the brake booster...

Despite knowing that I had a spare, it's now nowhere to be found, so another is arriving today.

 

[Bradm]

My only recent task was that I finally located where my coolant was slowly disappearing to, when it turned into a loss of a quart in 10 minutes.

The outboard heater core connector was streaming coolant down the noise deadening and thermal barrier on the firewall, next to the brake booster...

Despite knowing that I had a spare, it's now nowhere to be found, so another is arriving today.

You could replace the o ring in it also. Those are something i grab whenever i get a chance at the salvage yard

 

[hey_allen]

You could replace the o ring in it also. Those are something i grab whenever i get a chance at the salvage yard

I've had no luck trying to find o rings that fit correctly, when I've tried in the past.

 

[Bradm]

I've had no luck trying to find o rings that fit correctly, when I've tried in the past.

Got ya. I’ve never replaced one personally, as I’ve always had spare couplings on hand but ive read here that its been done.

 

[AndyBees]

I've replaced the heater coupling O-rings on several MK4s.
Seems I got the O-rings off eBay. There is one size that appears to be slightly too big. However, a little Vaseline and a hard push it will pop in place.
Typically, a leak from the heater coupling is very slow and hard to find. But, after I found the first one, that is the place I look first for a leak if it isn't obvious elsewhere.