2000 Passat what is DTC's P0306?

Now do you notice the air flow slowing down when at idle or speeding up when
the engine speeds up?
Might be a weak charging system allowing the heater blower to change speed.

Does your Passat have the electronic climate controlled heating system or
just some dials to control the heat?
The electronic system might have vacuum devices, but the mechanical dials
should not.

Here are two Passat specific yahoo groups you can join.



--
later,
vw doc

> wrote in message

On Feb 17, 10:50 pm, "dave AKA vwdoc1"
> wrote:
> Low on coolant, air in cooling system, partially clogged heater core,
> defective water pump or ???
>
> I would first try flushing out the heater core or better yet having the
> cooling system professional flushed out.
> My reasoning...........if the heater core is partially clogged then it
> will
> not get hot enough unless the flow of hot coolant increases.
>
> > wrote
>
> snip
>
> I have a 2000 Passat V6 that likes to lose heat (blows cold air) at
> 1800 rpm and lower like when I stop for a red light, but as soon as I
> hit 1800 and higher she blows hot again. any thoughts? I also need to
> replace plugs...93,000... but I don't think I want to go there

has plenty of fluid but I will try having the system flushed. could it
be vacuum related? my reasoning... low vac. at idle, boosts upon
acceleration.? side note, not sure this is related but air
conditioning acts funny also. cold air goes in and out just like heat
and i hear weird noises like internal vents are opening and closing.
I did fill the a/c and the cheap gauge reads warning zone, but don't
know I you can trust those gauges... but obviously something is not
right.

On Sun, 22 Feb 2009 19:55:05 -0600, "dave AKA vwdoc1"
> wrote:

>Now do you notice the air flow slowing down when at idle or speeding up when
>the engine speeds up?
>Might be a weak charging system allowing the heater blower to change speed.
>
>Does your Passat have the electronic climate controlled heating system or
>just some dials to control the heat?
>The electronic system might have vacuum devices, but the mechanical dials
>should not.
>
>Here are two Passat specific yahoo groups you can join.



Even non-electronic systems may use vacuum controlled vents.
It could be a vacuum problem.

where is cylinder # 6, is it the left (drivers side) towards the radiator or
firewall


"dave AKA vwdoc1" > wrote in message
...
> Then again I would vote for the BKR6EIX (IX iridium) spark plugs! ;-)
>
>
> "Tube Audio" > wrote in message
> ...
>> the BKR6EIX (IX iridium) and the BKR6EGP (GP platinum) are not multi
>> ground plugs
>>
>> I am not looking for the plug to do anything eextra, I am just looking to
>> order plugs and opened a can of worms.
>>
>> Thanks
>>
>>
>>
>>
>> "dave AKA vwdoc1" > wrote in message
>> ...
>>> Multi-ground
>>> Some combustion chamber designs (such as a rotary motor) require that
>>> the spark plugs have the ground electrode placed to the side of the
>>> center electrode rather than below as on a traditional plug (see photo).
>>> This firing tip design tends to erode the tip of the ground electrode
>>> faster than a traditional plug, erosion at these points creates a larger
>>> gap between the center and ground electrodes causing plug misfire. Thus
>>> by having more ground electrodes you extend plug life. It is important
>>> to note that multi-ground does not mean multi-spark, there will still
>>> only be one spark at a time. Therefore a multi-ground plug will not
>>> perform any better and may actually perform worse than a traditional
>>> plug, unless the engine is designed for a multiple ground plug.
>>>
>>>
>>> IF I was choosing I would probably try the BKR6EIX (IX iridium)
>>> OR the BKR6EGP (GP platinum)
>>> That is if the ones you listed were the only choices. <g>
>>>
>>> What are you looking for the spark plugs to do extra?
>>>
>>>
>>> "Tube Audio" > wrote in message
>>> news >>>> I'll look into the cooling system this weekend.
>>>>
>>>> Back to sparkplugs...
>>>>
>>>> The NGK site has a search feature for plugs per car and this is what it
>>>> came up with
>>>>
>>>> http://www.ngk.com/results_app.asp?AAIA=1359547
>>>>
>>>> Iridium BKR6EIX
>>>> Platinum BKR6EGP
>>>> Multi Ground BKR6EQUP
>>>> V-Power BKR6E
>>>>
>>>> which plug should I use? the multiground?
>>>>
>>>>
>>>>
>>>> "dave AKA vwdoc1" > wrote in message
>>>> ...
>>>>> Call up the place you are trying to order the spark plugs from and ask
>>>>> them!
>>>>> Did you go here to order from?
>>>>> http://www.germanautoparts.com/Volks...ectrical/192/6
>>>>> Address:
>>>>> Adirondack Auto Brokers Inc.
>>>>> 10 Corporate Drive
>>>>> Halfmoon, NY 12065
>>>>> Phone:
>>>>> Mon-Fri 8:00 AM-6:00 PM EST
>>>>> 518-899-7807
>>>>> Toll free 1-877-4GERMAN (1-877-443-7626)
>>>>>
>>>>>
>>>>> Yes you should bleed the cooling system from the bleeder hose on the
>>>>> heater hose. It is marked with a white line with a white circle.
>>>>> What is the problem? No heat?
>>>>>
>>>>>
>>>>>
>>>>> "Tube Audio" > wrote in message
>>>>> ...
>>>>>> when I go to order spark plugs online the part number is
>>>>>>
>>>>>> BKR6EKUB
>>>>>>
>>>>>> then when I add it to the cart the part number is
>>>>>>
>>>>>> BKUR6ET-10
>>>>>>
>>>>>> will this work or do I need the BKR6EKUB
>>>>>>
>>>>>> also I checked with VW and the thermostat is not covered under
>>>>>> warranty.
>>>>>>
>>>>>> Also I should investigate the thermostat error, I had the radiator
>>>>>> replaced several months ago, I want to be sure that this is not an
>>>>>> error that is leftover from the time I had the radiator replaced, or
>>>>>> maybe the system wasn't bled correctly.
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> "LG" > wrote in message
>>>>>> ...
>>>>>>> VW part # 101-000-035-HJ
>>>>>>> NGK brand P/N: BKR6EKUB
>>>>>>> VW factory plugs for this engine are made by NGK.
>>>>>>>
>>>>>>> "Tube Audio" > wrote in message
>>>>>>> ...
>>>>>>>> is FR 7 LDC+ the factory authorized spark plug?
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

I think you are right! If the a/c is set on Recycle then flaps will close
off the external air inlet.
I can't think of any other vacuum vents though.
Which other vents on a 2000 Passat would be vacuum controlled with the
mechanical controls that would cause the OP's problem?
That is if it is even an "air flow" issue! ;-)


> wrote in message
...
> On Sun, 22 Feb 2009 19:55:05 -0600, "dave AKA vwdoc1"
> > wrote:
>
>>Now do you notice the air flow slowing down when at idle or speeding up
>>when
>>the engine speeds up?
>>Might be a weak charging system allowing the heater blower to change
>>speed.
>>
>>Does your Passat have the electronic climate controlled heating system or
>>just some dials to control the heat?
>>The electronic system might have vacuum devices, but the mechanical dials
>>should not.
>>
>>Here are two Passat specific yahoo groups you can join.


>
> Even non-electronic systems may use vacuum controlled vents.
> It could be a vacuum problem.
>

look here
http://autorepair.about.com/library/...bl-fo-2870.htm


"Tube Audio" > wrote in message
...
> where is cylinder # 6, is it the left (drivers side) towards the radiator
> or firewall