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SENSOR ON DASH 

 

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 Post subject: SENSOR ON DASH
Posted: Thu Jun 07, 2007 2:51 pm 
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does anyone know what the sensor in the middle of the dash on an ef ghia is for. i used to have a crewman that had one here for the auto light switch. but i have no idea what this one does. anybody know?

 

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Posted: Thu Jun 07, 2007 2:55 pm 
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cabin temp sensoir for aircon
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Posted: Thu Jun 07, 2007 5:25 pm 
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has a little air pump which hisses.
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Posted: Thu Jun 07, 2007 6:35 pm 
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I wondered what that sound was. i thought i had a vacuum leak and was going to pull my dash apart to find it. :oops:

 

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Posted: Thu Jun 07, 2007 7:35 pm 
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richard williams wrote:
has a little air pump which hisses.


????????

 

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Posted: Thu Jun 07, 2007 7:45 pm 
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Happy wrote:
richard williams wrote:
has a little air pump which hisses.


????????


it does?

i had a hissing sound on the passenger side...ended up with a leeking vacuum pump thingy that levers the foot well thingy-ma-bob. I don't think hissing is good.

phong =P~

 

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Posted: Thu Jun 07, 2007 8:21 pm 
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Or do you mean the sun load sensor, which is right up the very front of the dash near the windscreen (a little white dome).

It detects how much sunlight in entering the car allowing the ACC to adjust the aircon and air vents to cope.

 

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Posted: Thu Jun 07, 2007 10:27 pm 
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data_mine wrote:
Or do you mean the sun load sensor, which is right up the very front of the dash near the windscreen (a little white dome).

It detects how much sunlight in entering the car allowing the ACC to adjust the aircon and air vents to cope.


That's the one i was asking about. Maybe I do have a vacuum leak. Is it a big job to get to the heater stuff in the dash. Is there already something on here about how to get to it? :?

 

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Posted: Thu Jun 07, 2007 10:46 pm 
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The climate control install doco has lots of info.

 

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Posted: Fri Jun 08, 2007 7:02 am 
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My gregories mentions something about a cabin air sniffer motor. I assume it pulls some of the hot dash air in to the sensor in the climate control for better dash temp accuracy. There is also a light/sun sensor.

 

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Posted: Fri Jun 08, 2007 10:25 am 
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my climate control definitely has a little pump in it.
Funny there is a dash cover on the car and I havent taken it off yet to see if there is a sun sensor.
In my wifes work Avalon there is a sun sensor for automatic headlights... when you drive under a bridge the lights com on for a second. LOL
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Posted: Fri Jun 08, 2007 10:40 am 
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The EF/EL's use engine vacuum to pass air over the sensor, if you have a leak, check the connector on the back of the dash unit, and the other end of the hose behind the glovebox(may be a bit hard to get to). The hose has a foam covering, so it won't be hard to find it.

 

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Posted: Fri Jun 08, 2007 10:41 am 
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I had a broken air-con control in my ED which hissed and required replacement under warranty.
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Posted: Fri Jun 08, 2007 11:00 am 
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EBGizmo wrote:
My gregories mentions something about a cabin air sniffer motor. I assume it pulls some of the hot dash air in to the sensor in the climate control for better dash temp accuracy. There is also a light/sun sensor.


Not quite, the little hole at the bottom of the CC unit itself, is where it 'sucks' it's air from. There's a little thermistor directly behind it that reads the cabin temperature.

 

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