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Car Forum / Volkswagen / Water Cooled Volkswagen Cars / December 2006

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2000 Passat Secondary air pump

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WVK - 24 Dec 2006 18:43 GMT
2000 1.8T with 68,000 has had 3 replacement pumps an now needing a 4th.
Current one has lasted only
10, 000 mi.  Is this normal?

WVK
Lost In Space/Woodchuck - 25 Dec 2006 01:01 GMT
No it's not normal! The common MISTAKE made by the repair person isn't
replacing the combi valve on the cylinder head too. What happens is the
valve hangs open some and condensation (water) from combustion get forced
back into the pump causing a failure.  Or the pump suction line is
cracked/broken and pulling water in from rain, snow, etc!

> 2000 1.8T with 68,000 has had 3 replacement pumps an now needing a 4th.
> Current one has lasted only
> 10, 000 mi.  Is this normal?
>
> WVK
WVK - 26 Dec 2006 16:42 GMT
Thanks,

The service Mgr is telling me that I must be driving though high water
(which I haven't) which ruins
the low mounted pump. Is that explanation plausable?
WVK

> No it's not normal! The common MISTAKE made by the repair person isn't
> replacing the combi valve on the cylinder head too. What happens is the
[quoted text clipped - 7 lines]
>>
>> WVK
Lost In Space/Woodchuck - 26 Dec 2006 23:39 GMT
only if you drive through 12" deep water. But then again the pump is sealed
well. I stand by my first idea, if none of the plastic lines are cracked and
seal well, especially at the pump... then it's the combi valve.

> Thanks,
>
[quoted text clipped - 14 lines]
>>>
>>> WVK
WVK - 31 Dec 2006 00:09 GMT
Thanks again,

They claim that internal "VW Tech" says your analysis is incorrect and l
insist that somehow
I have flooded out 4 pumps" (without drowning the entire engine/car?) by
driving in high water
and they are not paying.
Of course they are full of BS as your analysis is confirmed here (and I
havent been driving in high water):

"In the case of a failed secondary air pump, the actual cause is frequently
not found in
the pump itself but instead in a sticking non-return valve between secondary
air pump
& exhaust manifold for example. For this reason in the case of a failure all
components
togeather must be checked"
http://www.msi-motor-service.com/ximages/PG_PI_0025_EN_WEB.pdf
.
They will be happy to repair for another $700.00! Shouldn't this covered by
the emmisions warrantee?

Should I bend over on this? (Clear Lake VW in Houston)

Tkx
WVK

they are still blamputing the fault on meI am still being told that
> only if you drive through 12" deep water. But then again the pump is
> sealed well. I stand by my first idea, if none of the plastic lines are
[quoted text clipped - 19 lines]
>>>>
>>>> WVK
 
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