[DeTomaso] Heater blower fan

[Larry - Ohio Time]

Hi Garth,

I would do a few simple tests before you get too far into this project.

Make yourself a ground wire (alligator clips ect.)and go from a good ground
to the case of the motor. On most blower motors the only ground are the
small case screws. Blower boxes are not always grounded well.

Make yourself a hot wire and disconnect the motor wires and touch them to
the hot wire to see what happens. 

This way you are bringing power right from the battery to the motor,
bypassing all of the other wiring and switches.

Many many years ago I remember Jack saying how to remove the blower with the
dash in.


Larry - Cleveland



Thanks,

Larry

Larry Homolak | Larry at OhioTimeCorp.com

Ohio Time Corporation | 9401 Olde Eight Road, Northfield Ohio 44067 
Phone: 330.467.2430 | Fax: 330.467.9560
Workforce Management Solutions since 1976| www.OhioTimeCorp.com

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-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
Of Garth Rodericks via DeTomaso
Sent: Wednesday, October 12, 2016 12:48 PM
To: DeTomaso Mail List
Subject: Re: [DeTomaso] Heater blower fan

Also, all fuses are good.

      From: Garth Rodericks <garth_rodericks at yahoo.com>
 To: DeTomaso Mail List <detomaso at server.detomasolist.com> 
 Sent: Wednesday, October 12, 2016 9:46 AM
 Subject: Heater blower fan
   
Looking to the list for ideas on where to look for my problem...
Background/Symptoms:Years ago my interior heater/AC blower fan stopped
working.  I would turn the fan on high, and after a few minutes or more it
would slow down and eventually stop.  Sometimes it would not come on at all.
 I stopped using it altogether for a number of years.
Last year I was planning to replace the heater/AC blower fan and started to
remove the dash, but did not due to the size of the job and not having
sufficient time before the next event/show I wanted to take the car to. So I
re-secured the center console switch panel and buttoned everything up, then
shortly afterward found the heater/AC blower fan was working perfectly
again, consistently blowing high or low depending on the switch selection.
 The fan was blowing steady like a new motor.  I mentioned this to another
club member who told me the motors rarely actually go out and that the issue
was most likely a contact somewhere else. So, I had the AC worked on and
charged and the blower has worked fine for the last year or more.
A week ago on the way home from the Niello Concours the heater/AC blower fan
stopped working again. Regardless of the switch position, the fan motor does
not come on.  
I've removed and replaced the wires from the switch to make sure they had
good contact, but no change.

I checked voltage at each post with the switch in the 'low' and 'high'
positions and I'm getting 12v appropriately (or thereabouts - I don't
remember the exact reading on the multimeter).
I have a relay kit; could this be an issue with one of the relays?  Where
should I look next? 
Thanks!Garth