Re: [T3] EGR Pipe

[Constantino Tobio <ctobio@gmail.com>]

Jim Adney wrote:

>On 3 Apr 2005 at 11:40, Constantino Tobio wrote:
>
>  
>
>>I have seen the filters come up on ebay once in a while. I am 100% sure
>>that the EGR pipe is rotted out. I don't think the filter is rotted,
>>oddly enough, but I need to study further.
>>    
>>
>
>Really? I'll have to watch for that. I've never actually seen a good one. I 
>wouldn't mind having one just for "completeness."
>
>  
>
I know I've seen them once or twice, I thought of picking one up, but
since I'm not a big fan of EGR systems and was planning to
eliminate.mine, I didn't go for it.

>>By this logic, and since the EGR filter was supposedly a service item,
>>removing the filter shouldn't require pulling the engine.
>>    
>>
>
>Right, but I found that chasing the threads for the blockoff plate in the HE 
>was difficult.
>
>  
>
OK, so there's two small bolts that hold that on the HE. I have a bad
feeling that these bolts are gonna snap on me when I remove them.

Any hints? Liquid wrench and a torch are gonna be a little hard to use here.

>>And we've established that a Type 1 heat-riser block-off plate will do
>>the trick in the port on the heat exchanger.
>>    
>>
>
>I know that VW showed a special block off plate, but it was probably the same 
>thing. I know that the usual little type 1 heat riser gaskets work there.
>
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Those block-off plates have a groove. to accomodate several different
flange shapes, so I bet they're bound to work.

>>The EGR has electrical connections, right? What's the proper course of
>>action with these?
>>    
>>
>
>I blocked off the ports and left the cable connected. I'm sure this isn't 
>necessary, but it keeps things secured and avoids any problems of accidental 
>shorts. This way, you can hear the valve open/close when you turn the ignition 
>on; that's the only effect it has now.
>
>  
>
How does this EGR system function specifically? Does energizing it open
or close the EGR valve? What's the trigger for the EGR function?

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