Thank you, that turned out to be very close to the problem. My cold /
hot flap had gotten stuck in the wrong position, so a lot of air was
flowing but not through the resistive core. Luckily it was an easy fix
that did
not require me to remove the dash.
Jay
On February 17, 2016 8:15:36 AM EST, via EV <[email protected]> wrote:
You might need a new heater core. Your description, though, could just as
well be ducting problem. If the controlling cable fell off, for example, the
air would not be ducted across the heater core anymore and you’d see the
current drop and lack of heat.
Bruce
I have an S-10 conversion with a resistive heater core (I assume
from
EVA, who supplied the rest of the kit). Unfortunately, I believe
the
heater core may be failing. It still draws 10+ amps when I first
turn it
on, but the draw rapidly drops to under an amp within 15
seconds, where
it used to draw 10+ amps all day. It still has plenty of air
flow from
the fan, but the air does not heat up at all (it used to get
lukewarm).
I know that if you don't have air flow over the resistive heater
element
it will self regulate (resistance will go up), but the fan is
blowing
plenty of air. I figure either the element itself is compromised
somehow, or perhaps it is no longer in the airflow path (I don't
know
why this would be, possibly it fell down or something...)
Reading a standard S10 service manual (I have a 95 model) I will
need to
remove the entire dash to access the (original) heater core. I was
wondering if anybody who had installed the EVA resistive heater kit
could tell me anything about how the resistive core is mounted,
and if
perhaps it would be possible to access it by pulling the blower
motor
off the firewall instead of removing the dash? (I'm hoping here....)
Tips/trick for debugging the problem short of actually removing the
entire dash would also be appreciated.
I have an email out to EVA asking how much it would cost to buy a
replacement part, as if I remove the dash I want to be ready to
replace
it right away (and I'd take the opportunity to install a new amp
hour
gauge at the same time...)
Jay
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