Hi guys can I get your thoughts on something?
So my car a/c doesn't work. and well.. its getting hot in Australia and im leaving in a week for a long road trip into even hotter regions. I took it to the mechanic and they said they couldn't work it out but all the sensors are good its gassed up fuses/relays are fine. "must be something to do with the body control unit" So. I pulled that apart cleaned all the dust and crap out, still nothing. Took it to an auto elec they said similar thing but couldn't guarantee changing the dash control unit would fix it. Plus they are also hard to match/find and expensive.
(A/C button on the dash is completely dead, no light or anything)
There is basically just an electromagnetic clutch on the compressor. I shorted that to the +12 and it engaged and worked perfectly. Started getting cold air from the air con.
Soooo.... What I'm thinking.... I bought a timing relay from jaycar I can set the on/off interval (ie 2 min on 2min off) I'm planning to bypass the controls and engage the clutch with this relay.
This bypasses any sensor control (compression and temperature) on a scale from 1-10 how bad of an idea do you think this is?
Simple in theory
Dash switch> ACC relay > timing relay > clutch.
Am I setting myself up for a RUD ("rapid unplanned disassembly" - Elon musk)?
Cheers
M
So my car a/c doesn't work. and well.. its getting hot in Australia and im leaving in a week for a long road trip into even hotter regions. I took it to the mechanic and they said they couldn't work it out but all the sensors are good its gassed up fuses/relays are fine. "must be something to do with the body control unit" So. I pulled that apart cleaned all the dust and crap out, still nothing. Took it to an auto elec they said similar thing but couldn't guarantee changing the dash control unit would fix it. Plus they are also hard to match/find and expensive.
(A/C button on the dash is completely dead, no light or anything)
There is basically just an electromagnetic clutch on the compressor. I shorted that to the +12 and it engaged and worked perfectly. Started getting cold air from the air con.
Soooo.... What I'm thinking.... I bought a timing relay from jaycar I can set the on/off interval (ie 2 min on 2min off) I'm planning to bypass the controls and engage the clutch with this relay.
This bypasses any sensor control (compression and temperature) on a scale from 1-10 how bad of an idea do you think this is?
Simple in theory
Dash switch> ACC relay > timing relay > clutch.
Am I setting myself up for a RUD ("rapid unplanned disassembly" - Elon musk)?
Cheers
M
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