On the old AC loader we had, I took off the intake hose and had a gander
inside. It was not much different from a block heater, only it glowed
like an electric stove element on High.
probably 20-30 amps. If the relay is 30A, then probably the heater is 20A
Curt Raymond via Mercedes <mailto:mercedes@okiebenz.com>
January 9, 2020 at 9:38 AM
Anybody care to make a wild guess at the current draw for the intake
heater on the ASV?I've been displeased with the coldstart-ability of
the ASV for some time now and one of the things I've been considering
is the intake heater. Its aftermarket to the engine, installed by ASV
but I'm pretty sure the wiring to it now was done by somebody else
later on.Its controlled by a button in the cab which runs to a Hella
4RA 003 510-51 relay which my googling suggests is a 30a relay. The
wiring to it is 10 or 12ga, I'm not sure. I'm pretty sure its too
small for 30a anyway.
Its also worth noting that there is no feedback (ie a light) from the
heater at all, you push the button and hope something is happening.
IIRC the way to test this would be to look at the voltage on the
heater since I don't have an amp gauge capable of testing more than
10a and clamp on DC is unreliable.
Thoughts? I should probably take the intake apart and see if the thing
heats up at all...
-Curt
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