a/c blower problem

I have a 1990 mustang and the blower will not blow when set on high but
blows on all other speeds. Is this a problem with the blower or the
switch?

On 2/23/2005 12:35 PM, Joachim Peiper wrote:

> I have a 1990 mustang and the blower will not blow when set on high but
> blows on all other speeds. Is this a problem with the blower or the
> switch?

Sounds like the switch to me. If the blower works at all, the motor
itself is fine.


--
/ Garth - '83 GL V6stang Hatch <Former MW #7> \
| My V6stang: http://www.v6stang.com/v6stang |
| RAMFM Merchandise: http://www.cafeshops.com/ramfm |
\ Mail for secure reply information /

IIRC, this car will have a high blower relay.... check your owners manual...
especially the section regarding the underhood junction box.... the handy
dandy laptop/library is at work tonight.

"Joachim Peiper" > wrote in message
ups.com...
> I have a 1990 mustang and the blower will not blow when set on high but
> blows on all other speeds. Is this a problem with the blower or the
> switch?
>

In article . com>,
"Joachim Peiper" > wrote:

> I have a 1990 mustang and the blower will not blow when set on high but
> blows on all other speeds. Is this a problem with the blower or the
> switch?

Either the blower switch is defective or its ground path is open circuit.
The ground connection to the blower switch is strictly for high speed. The
other speeds use the switch and a combination of series resistors with
another path to ground...

Mike
93 Cobra