Re: heater fan shuts off now and then?

["theshovel1224" <theshovel1224@xxxx>]

I have installed a relay update kit from DMC Houston & the only
breaker that has a higher rating is the one for the radiator fans. 
40A as opposed to 35A. The upgraded breakers use the same spade
connectors as the OEM breakers. There is only one 25A breaker for
the heater fan. Maybe you were thinking of the relays for speeds 3 &
4? The other one on the forward wall of the relay compartment is for
the radiator fans. The heater fan breaker has 4 spade connectors on
it & the radiator fan breaker has 2 spade connectors on it.

John Yeoman

--- In dmcnews@xxxx, "tmpintnl" <tobyp@xxxx> wrote:
> I believe that the common cause for this is a weak circuit breaker.

> The breaker trips after some time in operation, and then resets
itself 
> for the next cycle. If I recall correctly, there is an upgrade to
a 
> higher rated breaker that still provides protection to the circuit, 
> but has enough capacity to allow the fan to operate for an extended 
> period of time. The upgraded breakers use "loop-style" connectors, 
> whereas the OEM breakers have a spade connector. This means that
you 
> have to change the connector ends on the wires to make them
compatible 
> with the new breakers. The spade style connectors are more prone
to 
> heat buildup and higher resistance than the loop connectors. There 
> are two breakers, one for fan speeds 1 and 2, and the other for 3
and 
> 4. The breakers are against the forward wall of the relay
compartment 
> to the left of the fuse box (if memory serves). Unless somebody
else 
> on the list has quick access to part numbers, I will update later
this 
> evening.
> 
> Toby Peterson VIN 2248
> Winged1
> 
> --- In dmcnews@xxxx, "fluxmcfly" <bfreyguy@xxxx> wrote:
> > Does anybody have an idea why my heater fan shuts off when
running 
> > the ac.I'll have it on high then it with stop blowing or will
blow 
> on 
> > low,if you turn the fan switch to low then back to high it will
work 
> > usauly.It does this quite a bit but not all the time.Could this
be a 
> > bad switch or some type of power falure?Any thoughts would be 
> > appreciated 
> > very much thank you
> > 
> > Brian bfreyguy@xxxx