@ Question About the air conditioning

Hello There:

When I turn on the ac on my car (Year 2000), it will only work with the fan
on High (it will
function perfect). If I use low or medium fan speeds, nothing happens.

Any suggestion in the subject?

Thank you,

M

[email]nospammaltpc@mindsprin.com[/email]

(Please remove nospam to reply)

Replace the fan switch, WBMA.


mike hunt



m wrote:[color=blue]
>
> Hello There:
>
> When I turn on the ac on my car (Year 2000), it will only work with the fan
> on High (it will
> function perfect). If I use low or medium fan speeds, nothing happens.
>
> Any suggestion in the subject?
>
> Thank you,
>
> M
>
> [email]nospammaltpc@mindsprin.com[/email]
>
> (Please remove nospam to reply)[/color]

Hello Mike:

Thank you for your reply.
I was just wondering, I replaced the battery and the same day I got this
problem with the ac, do you thing maybe this is related?
Is the fan switch right behing the little knob? Maybe I can replace it
myself.

Thank you,

M
===================================================================

<DustyRhoades@mailcity.com> wrote in message
news:422E0C0D.847B9A6B@mailcity.com...[color=blue]
> Replace the fan switch, WBMA.
>
>
> mike hunt
>
>
>
> m wrote:[color=green]
> >
> > Hello There:
> >
> > When I turn on the ac on my car (Year 2000), it will only work with the[/color][/color]
fan[color=blue][color=green]
> > on High (it will
> > function perfect). If I use low or medium fan speeds, nothing happens.
> >
> > Any suggestion in the subject?
> >
> > Thank you,
> >
> > M
> >
> > [email]nospammaltpc@mindsprin.com[/email]
> >
> > (Please remove nospam to reply)[/color][/color]

"m" <onfd@aol.com> wrote in message
news:kNnXd.5719$CW2.3864@newsread3.news.atl.earthlink.net...[color=blue]
> Hello There:
>
> When I turn on the ac on my car (Year 2000), it will only work with the
> fan
> on High (it will
> function perfect). If I use low or medium fan speeds, nothing happens.
>
> Any suggestion in the subject?
>
> Thank you,
>
> M[/color]

probably the speed regulator resistor pack has burnt out

mrcheerful . wrote:[color=blue]
> "m" <onfd@aol.com> wrote in message
> news:kNnXd.5719$CW2.3864@newsread3.news.atl.earthlink.net...
>[color=green]
>>Hello There:
>>
>>When I turn on the ac on my car (Year 2000), it will only work with the
>>fan
>>on High (it will
>>function perfect). If I use low or medium fan speeds, nothing happens.
>>
>>Any suggestion in the subject?
>>
>>Thank you,
>>
>>M[/color]
>
>
> probably the speed regulator resistor pack has burnt out
>
>[/color]
aka the "blower resister"

There's a relay for the fan speeds. mine on my 1986 celica is near the
fan motor but on yours, i don't know. check it you can save on labor
;)

Luc.


On Tue, 08 Mar 2005 20:19:28 GMT, "m" <onfd@aol.com> wrote:
[color=blue]
>Hello There:
>
>When I turn on the ac on my car (Year 2000), it will only work with the fan
>on High (it will
>function perfect). If I use low or medium fan speeds, nothing happens.
>
>Any suggestion in the subject?
>
>Thank you,
>
>M
>
>nospammaltpc@mindsprin.com
>
>(Please remove nospam to reply)
>
>[/color]

Thank you all for your replies.
Yes, the blower resistor block.
Thank you again.
M
=========================
"L.Morin" <cuda@destination.ca> wrote in message
news:422e7b15.11667052@news.destination.ca...[color=blue]
> There's a relay for the fan speeds. mine on my 1986 celica is near the
> fan motor but on yours, i don't know. check it you can save on labor
> ;)
>
> Luc.
>
>
> On Tue, 08 Mar 2005 20:19:28 GMT, "m" <onfd@aol.com> wrote:
>[color=green]
> >Hello There:
> >
> >When I turn on the ac on my car (Year 2000), it will only work with the[/color][/color]
fan[color=blue][color=green]
> >on High (it will
> >function perfect). If I use low or medium fan speeds, nothing happens.
> >
> >Any suggestion in the subject?
> >
> >Thank you,
> >
> >M
> >
> >nospammaltpc@mindsprin.com
> >
> >(Please remove nospam to reply)
> >
> >[/color]
>[/color]

<DustyRhoades@mailcity.com> wrote in message
news:422E0C0D.847B9A6B@mailcity.com...[color=blue]
> Replace the fan switch, WBMA.
>
>
> mike hunt
>[/color]
Mike,

What does WBMA stand for? Would be my assessment?
--
Ray O
correct the return address punctuation to reply

On Wed, 09 Mar 2005 16:14:23 +0000, m wrote:
[color=blue]
> Thank you all for your replies.
> Yes, the blower resistor block.
> Thank you again.
> M
> =========================[/color]

Curiosity: Where IS it? On my older Toys, it is IN the fan housing. Not
real easy to get to!

[color=blue]
> "L.Morin" <cuda@destination.ca> wrote in message
> news:422e7b15.11667052@news.destination.ca...[color=green]
>> There's a relay for the fan speeds. mine on my 1986 celica is near the
>> fan motor but on yours, i don't know. check it you can save on labor
>> ;)
>>
>> Luc.
>>
>>
>> On Tue, 08 Mar 2005 20:19:28 GMT, "m" <onfd@aol.com> wrote:
>>[color=darkred]
>> >Hello There:
>> >
>> >When I turn on the ac on my car (Year 2000), it will only work with the[/color][/color]
> fan[color=green][color=darkred]
>> >on High (it will
>> >function perfect). If I use low or medium fan speeds, nothing happens.
>> >
>> >Any suggestion in the subject?
>> >
>> >Thank you,
>> >
>> >M
>> >
>> >nospammaltpc@mindsprin.com
>> >
>> >(Please remove nospam to reply)
>> >
>> >[/color]
>>[/color][/color]

Close enough, advise was what I meant however. ;)


mike hunt



Ray O wrote:[color=blue]
>
> <DustyRhoades@mailcity.com> wrote in message
> news:422E0C0D.847B9A6B@mailcity.com...[color=green]
> > Replace the fan switch, WBMA.
> >
> >
> > mike hunt
> >[/color]
> Mike,
>
> What does WBMA stand for? Would be my assessment?
> --
> Ray O
> correct the return address punctuation to reply[/color]

On Tue, 08 Mar 2005 20:19:28 GMT, "m" <onfd@aol.com> wrote:
[color=blue]
>Hello There:
>
>When I turn on the ac on my car (Year 2000), it will only work with the fan
>on High (it will
>function perfect). If I use low or medium fan speeds, nothing happens.
>
>Any suggestion in the subject?
>
>Thank you,
>
>M
>
>nospammaltpc@mindsprin.com
>
>(Please remove nospam to reply)
>[/color]


You could have dirty contacts.
Much easier to guess dirty contacts, rather than a burnt out resister.

Check there, you might need the switch replaced.

hth,

tom @ [url]www.BookmarkAdmin.com[/url]

<BigJohnson@mailcity.com> wrote in message
news:4230727C.A6B14FD4@mailcity.com...[color=blue]
> Close enough, advise was what I meant however. ;)
>
>
> mike hunt
>[/color]
Thanks!
--
Ray O
correct the return address punctuation to reply

I am not clear.

The A/C and the Fan Speed are not related.

If you turn the fan speed selector from OFF, it should start on LOW, then go
to MED, then HIGH. It should do this without regard for the setting of the
A/C.

If the Fan works at all of the various speeds, but the A/C only works when
the Fan is set to HIGH, then I am not sure what the trouble is.

But if the Fan itself only works on HIGH, then there is a resistor pack that
has failed and needs to be replaced.





"m" <onfd@aol.com> wrote in message
news:kNnXd.5719$CW2.3864@newsread3.news.atl.earthlink.net...[color=blue]
> Hello There:
>
> When I turn on the ac on my car (Year 2000), it will only work with the[/color]
fan[color=blue]
> on High (it will
> function perfect). If I use low or medium fan speeds, nothing happens.
>
> Any suggestion in the subject?
>
> Thank you,
>
> M
>
> [email]nospammaltpc@mindsprin.com[/email]
>
> (Please remove nospam to reply)
>
>[/color]

The Real Tom wrote:[color=blue]
>
> You could have dirty contacts.
> Much easier to guess dirty contacts, rather than a burnt out resister.
>
> Check there, you might need the switch replaced.
>[/color]

While dirty switch contacts and a burnt out resistor can theoretically
have the same effect, in practice contacts that are getting dirty will
gradually deteriorate, at first only occasionally fail to connect well
(until the switch is wiggled or moved slightly), then making
intermittent or poor connections with increasing frequency until they
eventually cease to ever connect. It's extremely uncommon for contacts
to one day be clean enough to work properly and the next day be dirty
enough not electrically connect at all. In addition, this case involves
multiple switch positions that do not work at all but one that works
normally. The odds of a few contacts in a switch suddenly going bad at
the same time but one or two being preserved are very low. Furthermore,
the one position that works, the fan high position, is the one that
would work with the resistor pack blown. Therefore, if I understand the
problem correctly (and I am assuming that the symptoms appeared all at
once together), the cause is almost certainly the resistor pack and not
the switch.

Stephen