What actually happens is that the cap gets blown out, too. They don't
hold up nearly as long as the sensor! Also, be careful when ordering
the system. You've got to get the type with barbs on it to hold the
wire fastener on the plug, otherwise the plug will constantly fall off
the sensor. I accepted such a replacement, and had to get another one
with barbs.

Jim

On Tue, Aug 26, 2008 at 11:09 AM,  <kayakjr@comcast.net> wrote:
> But shouldn't the pressurized expansion tank cap let off the extra
> pressure?   I comtemplating getting a new cap from the VW dealer.
>
> Funny thing is that the dealer's sensor price they gave me was right in line
> with the on-line vendors, (~21.00)  but the cap was $25.00, vs. less than
> $9.00 for the on-line vendors.
>
> John
>
>
>
>
> -------------- Original message --------------
> From: "Jim Felder" <jim.felder@gmail.com>
>
>> That's what it was on my vanagon. Blown head gasket or cracked head.
>> Check it out now. Don't wait for the worst to happen like I did.
>>
>> Jim
>>
>> On Tue, Aug 26, 2008 at 9:54 AM, John Reynolds wrote:
>> > I had a coolant level sensor develop a split late last year, I replaced
>> > it and
>> now with less than 1,000 miles since that time, the new sensor has split
>> as
>> well. I was careful tightening it.
>> >
>> > Could there be some reason, like too much pressure in the system that
>> > could
>> create this problem?
>> >
>> > This is an 86, 2.1 Vanagon
>> >
>> > John Reynolds
>> > LiMBO
>> >