Friend with TDI loosing power over 3000 rpm

[Cordialtea]

Re: Friend with TDI loosing power over 3000 rpm

Hey I wouldn't have a clue either if this was me.

I know of some great shops that can help me out though that one charge an arm and leg.

Come on Now guys Lets Help this Person not jump down each others throats.

You both have different opinions and that is ok.

[Gone Hunting]

Re: Friend with TDI loosing power over 3000 rpm

Hello forum,
I am the friend of Kuhli that the original question was posted on behalf of. The amount of traffic it generated caused me to register and joint the fray.

Thank you to all for the various points of view. The reason for the purchase of this car (new) was because of the 100km round trip to work and the great mileage advertised. Over all the vehichle has been a huge disappointment. It has nickle and dimed me to death. One little thing after another. Now the radio won't work properly. I will get to that after I get the power back. Then I will fix the loose drivers window. Then try to figure out why the trunk has quit closing properly. The sagging cup holder? Well, I guess you can't expect it to last under the weight of a cup of coffee. Will I ever buy one again? Not likely. Do I need to get this one sorted out? Most definitely so I don't get run over on my morning commute on Highway 8.

I purchased VAG-COM just to try to keep up the problems. As far as DIY abilities, I am a gearhead. I am currently building 3 different V-8's in my home garage and restoring a muscle car. I should be able to handle the intake manifold bolts.

There has been a lot of discussion on the MAF. I did replace it. I drove around with the VAG-COM "live" to see the air flow. Similar range of numbers as with the old MAF.

I am still unclear on how "cleaning" the intake manifold can change this. Are there sensors that get coated? What's the deal? If a few thousanths of an inch of smoot and smerje can cause the performance detioration, I NEED to understand why.

As far as the dealers go, like several other neighbors who have purchased the same car, each of us have had so many "incidents" with them, I have given up and will try to repair myself.

I will check the "snow screen". BTY, K&N cartridge in stock intake box.

Sorry for the long dissertation, just venting frustration with the product.

How and why does the intake cleanliness cause the problem? Diesels are not clean running like gas.

Thanks all!

[Kor]

Re: Friend with TDI loosing power over 3000 rpm

I am still unclear on how "cleaning" the intake manifold can change this. Are there sensors that get coated? What's the deal? If a few thousanths of an inch of smoot and smerje can cause the performance detioration, I NEED to understand why.

Thanks all!

Thousandths of an inch eh?

Maybe Ambrose will re-post his pics of this... I think he had some good ones.

[Gone Hunting]

Re: Friend with TDI loosing power over 3000 rpm

Thousandths of an inch eh?

Maybe Ambrose will re-post his pics of this... I think he had some good ones.

Please do post them. The reason I am on the forum is seeking assistance from those who know about this things. If it isn't "thousanths" of an inch, please do advise what it is? The question was exactly what is coating it. Kor, I am not sure whether there was a note of sarcasm. I sure hope not, got enough of that at Northland, South Center, and Fifth Ave.

I am REALLY and TRULY asking what does coat the intake, why, and what the causes are.

A polite and decent guy (and a lousy speller) just looking for some wisdom and knowledge from those who already learned the lessons the hard way.

Thanks!

[Kor]

Re: Friend with TDI loosing power over 3000 rpm

Nah I wasn't being sarcastic.

But there have been pictures taken where the pipe was basically totally clogged.

[Gone Hunting]

Re: Friend with TDI loosing power over 3000 rpm

Nah I wasn't being sarcastic.

But there have been pictures taken where the pipe was basically totally clogged.

Thank you sir!

I think I know what I will be taking apart this weekend. Do you know if this is a "reoccuring theme" or is their a modification that I can do to prevent this?

Appreciate the help from those in the know!

[Kor]

Re: Friend with TDI loosing power over 3000 rpm

Thank you sir!

I think I know what I will be taking apart this weekend. Do you know if this is a "reoccuring theme" or is their a modification that I can do to prevent this?

Appreciate the help from those in the know!

I can't find the thread but there is one on this site somewhere with good comments/info by "B5" aka Ambrose and I think some good ones also by "Stonewall" aka Brent. Who don't seem to get along with each other for some reason.

Found it

http://www.newveedub.com/forums/show...ght=tdi+intake

Check out the images

[Canadian Turbo]

Re: Friend with TDI loosing power over 3000 rpm

I think you can use the VAG-com to reduce the EGR which will slow the effects but that is the best that can be done, from what I remember.

[Gone Hunting]

Re: Friend with TDI loosing power over 3000 rpm

Kor and Blair, thanks guys!
I went to the link. That isn't dirty, that looks plugged solid. When the first comment came back, I read dirty to mean just that. The pictures look like an inner tube went through the turbo. I wonder why the salesman never told me to expect that. From the threads, it appears that VW and their dealers take no responsibility for their engineering. As a P.Eng., I have to take personal responsibility for the things I design and then be legally responsible.

Do the mod's by B5 still require the EGR setting change with the VAG-COM?

I also wonder if VW Canada has been to this forum. If they have, they would probably want to ban it for some of these "truths" coming out.

Might even keep the car if this fixes it...and gas prices keep rising.

[Stonewall]

Re: Friend with TDI loosing power over 3000 rpm

Who don't seem to get along with each other for some reason.

Naa he just likes to keep raggin on the same thing over and over and doesn't believe that a non-professional should work on anything
Here are some pics of a clogged intake from the TDIclub.com (best TDI info site)
Edit: Had to link the post.
linky here

Here is a link to the instructions to clean the intake linky
If you have any questions or need any help feel free to PM me.

[Stonewall]

Re: Friend with TDI loosing power over 3000 rpm

Do the mod's by B5 still require the EGR setting change with the VAG-COM?

No settings to change but your gas milage will go down a little bit as you aren't recycling any of the left over fuel in the exhaust.
Edit: Have you turned down the egr duty cycle with the vag-com? it will slow the clogging of the intake. There are also some mogs to the crank case vent that help alot for clogging as it stops oil vapors going into the air intake.

[bart]

Re: Friend with TDI loosing power over 3000 rpm

huh???

egr == exhaust gas recirculation, !fuel...

[Stonewall]

Re: Friend with TDI loosing power over 3000 rpm

huh???

egr == exhaust gas recirculation, !fuel...

Psst where does the unspent fuel go?

[gtx]

Re: Friend with TDI loosing power over 3000 rpm

Psst where does the unspent fuel go?

There is no unspent fuel,the only reason for the EGR valve is to
prevent engine shuttering when you turn the car off,hence the flap in
housing ,and to cool off exhauxt gases to lower the NOX emmissions
which diesels are famous for..

[Gone Hunting]

Re: Friend with TDI loosing power over 3000 rpm

Thank you all for pointing me in the right direction.

Due to work commitments, I finally pulled the intake manifold off yesterday. Once the EGR came out, there was an opening in the crud, shmoot, and smerje barely big enough to poke my finger through. It is soaking in solvent over night and I will put it together today. Hopefully I can rev it over 3000 rpm after!

Great forum, great information, usually entertaining, and it seems that the moderators keep the the memebers in line.

Thanks for all the help!