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VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

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Old April 4th, 2007, 14:24   #1
Peoria_TDI
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Default Best method for EGR cleaning?

I will be cleaning my EGR soon, and plan on using carb cleaner and a tooth brush. If anyone has a better method, I would appreciate your suggestions.
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Old April 4th, 2007, 14:25   #2
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Just the egr or the egr and the intake manifold?
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Old April 4th, 2007, 15:32   #3
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Just the EGR for now. Will look at the intake at 50k, at 27k now.
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Old April 4th, 2007, 16:07   #4
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You'll be wasting your time.
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Old April 4th, 2007, 16:13   #5
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Quote:
Originally Posted by TDI Believer
You'll be wasting your time.
Why is it a waste of time?
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Old April 4th, 2007, 20:34   #6
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I plan on wasting my time when I get a nice warm weekend as well.
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Old April 4th, 2007, 23:02   #7
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Quote:
Originally Posted by Smokerr
I plan on wasting my time when I get a nice warm weekend as well.
Me too. I don't understand why cleaning/removing something that adversely affects mpg and performance is a waste of time.
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Old April 5th, 2007, 18:21   #8
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I've got 73K on my car. Never cleaned the EGR. Car consistently gets 41-43 mpg on my 45 mile morning commute. Car has not suffered any performance degradation (other than losing RCII when the ECU was changed). Now explain to me why I would want to remove my EGR valve?

The EGR valve is dumping exhaust into your intake manifold...and you want to make sure it can dump in as much as possible?

These things don't need to be cleaned. If it will make you all feel better with some placebo effect...go for it. Certainly there's something more useful you could do for your car.

Has your mpg dropped? Is there some compelling reason to believe you need to do this to your car...other than the fact that others have posted pics of ugly, sooty EGR valves?

Did you know that one person here left some solvent on his EGR valve after cleaning it and the resulting backfire from the vapors in his manifold blew a turbo seal?

Don't get me wrong...I'm all for preventive maintenance. The EGR valve doesn't require it.
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Old April 5th, 2007, 18:24   #9
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I dunno, i have seen some pretty ugly PD EGR's....
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Old April 5th, 2007, 18:28   #10
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TDI Believer,

Did you look at how restricted my EGR was?

http://forums.tdiclub.com/showthread.php?t=172724
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Old April 5th, 2007, 18:35   #11
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Quote:
Originally Posted by jrock
TDI Believer,

Did you look at how restricted my EGR was?

http://forums.tdiclub.com/showthread.php?t=172724
Yep...another pic of a dirty EGR valve. Now that you've made it all spiffy, it can dump more soot into your intake manifold much more efficiently.

You'll probably enjoy cleaning that too.

Now...someone explain to me the benefits of "unrestricting" a valve that dumps soot into your intake manifold...
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Old April 5th, 2007, 18:58   #12
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Quote:
Originally Posted by bigEZ
well, i didn't think of it that way. i was getting ready to clean mine in a couple of weeks, but now i might reconsider.

believer, the egr delete that jeff does with his programing, does it affect this area, the egr valve? if so, then you're right, why would you clean the valve?
If you can get a chip tuner to do an EGR delete (essentially flattening the EGR map), the EGR valve will never open. That's probably the best thing you could do for your engine.
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Old April 5th, 2007, 19:08   #13
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Quote:
Originally Posted by bigEZ
so, in theory, the egr valve should have no effect on mpg's?
I can easily get 42 mpg on my morning commute.
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Old April 5th, 2007, 19:13   #14
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is it something that if it became totally clogged and provided no flow at all, it would throw a cel? obviously, all the air needed is coming from the intake; i'm just wondering if a physical disruption in the "circuit" would eventually cause some problems (cel, reduced mpg's, etc. etc.)?
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Old April 5th, 2007, 19:38   #15
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Well then why change your air filter if air restriction is not an issue.
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