'00 Eurovan Heater Core refurb possible?

[soissisc]

On a 99, here is how to gain access to the bolts that hold the passenger airbag in place.

You have to take out the center vents and the passenger side vent and then you can see them. This stumped me for a little bit the first time around.

The place that I ordered my replacement heater core from sent me the wrong part, and I did not realize it until I was ready to drop it in... so I am in holding pattern on the core replacement on my van...
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Mark

68 Westy
92 Jetta (oh it is retired)
99 Eurovan
05 NBC
06 Audi A3
72 Westy (I am going to fix it up)

[MrPulldown]

On one side there are the 3 large holes and the other there are the 6 smaller holes with the additional 4 even smaller holes. From my reading it looks like you can gain access to the 3 hole portion from reach under the dash after removing the center console. The other side will require cutting of the box to access.

My question is what do these 2 different flaps control. If I just patch up the 3 large holes which mix door am I fixing.

I have been getting the foam blowing out the vents issue and last summer when it was 110 degree outside the van could only achieve about 88 degrees inside. I plan on some desert travels this summer and would like my AC to perform better.

Another question is: when I have the AC on and idling, the engine RPMs is not smooth. It cycles up and down and is pretty rough. I know that when the AC is on and the compressor is running it is an additional load on the engine. There is a device that will generally increase the RPMs to compensate. Is this system not working on my van. What do I need to replace to fix?
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2002 EVC

[vwwestyman]

[soissisc]

The fan is downstream from the intake, I don't think I would pour anything there. If I remember correctly, where the coolant collects is a lowest point, as in it would not rinse out.
_________________
Mark

68 Westy
92 Jetta (oh it is retired)
99 Eurovan
05 NBC
06 Audi A3
72 Westy (I am going to fix it up)

[vwwestyman]

Yeah, I popped the filter off yesterday and had a look-seemed like a no-go.

Though later after deciding to rinse the coolant that had spilled when I bypassed the core (it is nicely easy to do!) I also decided to flush the coolant out of the core. At the time, I was thinking I was just keeping any from splashing out, but later I figured that it 1) would keep that remaining coolant from leaking into the box and 2) may dribble the water and help clean up the inside of the box a little.

I can smell it a bit from outside after driving so I should probably check that my bypass pipe isn't leaking a little, but so far no smells inside. Should probably pop the center vents out and wash them up a little as there is some visible residue.
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Dave Cook

President, Wild Westerner Club

1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing

[TFB777]

I wound up using High temp foam from McMaster-Carr part #1059N368 as recommended by David at 1705.net. He recommend 3 sheets of 12x12 foam but I was able to do the entire job with just two sheets. If anyone is interested, I have an uncut 12x12 sheet which I will sell for $10 + Shipping (should save you about 1/2). Message me if interested.