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Aircon low pressure sensor lc5


 
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ebrian0
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Joined: 03 Sep 2021
Posts: 7
Location: Somerset

PostPosted: Sat Oct 16, 2021 19:43    Post subject: Aircon low pressure sensor lc5 Reply with quote

Is the low pressure sensor located in the boot?
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PostPosted: Sat Oct 16, 2021 19:43    Post subject: Google Ads keep this community free to join!


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Tractionman
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Joined: 07 Apr 2007
Posts: 821
Location: Bournemouth, Dorset

PostPosted: Sat Oct 16, 2021 20:32    Post subject: Reply with quote

As far as I'm aware the H and L are under the bonnet where the rest of the A/C installation is. It makes no sense to put it at the opposite end anyway, even if you have the model lc5 with rear passenger controls.
Maybe someone else more knowledgable will be along to confirm, or not ?
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TONYCY11
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Joined: 05 Jun 2012
Posts: 409
Location: CYPRUS

PostPosted: Sun Oct 17, 2021 7:27    Post subject: Reply with quote

When you say low pressure sensor , do you mean the low pressure port (that you fill the A/C gas from ) if so its under the bonnet on the drivers side between the front of the airfilter box and the side of the radiator it has a grey cap with L on that you unscrew to top up the A/C .
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Tractionman
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Joined: 07 Apr 2007
Posts: 821
Location: Bournemouth, Dorset

PostPosted: Sun Oct 17, 2021 9:38    Post subject: Reply with quote

Nice one Tony.
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ebrian0
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Joined: 03 Sep 2021
Posts: 7
Location: Somerset

PostPosted: Sun Oct 17, 2021 16:08    Post subject: Reply with quote

Thanks for the replies, its an lc5 with controles in the rear.
I found the high and low in the engine bay.Its been re gased and holds pressure ok.
When the clutch relay is bypassed the compressor  kicks in and blows cold ok.
However I'm getting  12v briefly at the clutch relay then it dissappear and the air con symbol flashes and compressor  does not kick in.
I'm guessing  its some sort of logic faults stopped  it running .
I'm thinking its the sensor on the low pressure  side but can't locate  it or does the senor on the high pressure  side do both Shocked
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TONYCY11
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Joined: 05 Jun 2012
Posts: 409
Location: CYPRUS

PostPosted: Sun Oct 17, 2021 17:13    Post subject: Reply with quote

The A/C relay is known to fail after around ten years , so much so that I have bought a spare for if or when mine fails , the part numbers on mine which has A/C in the back is 90987-02028 and under those numbers are 156700-3290 and is made by DENSO , got my my spare one from e bay cost was 6 quid . seems to me yours has failed .
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Tractionman
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Joined: 07 Apr 2007
Posts: 821
Location: Bournemouth, Dorset

PostPosted: Sun Oct 17, 2021 17:43    Post subject: Reply with quote

Try swapping the front fog light relay for the a/c relay in the main fuse box in engine bay as a double check. Both the same.
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TONYCY11
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Joined: 05 Jun 2012
Posts: 409
Location: CYPRUS

PostPosted: Sun Oct 17, 2021 18:15    Post subject: Reply with quote

if they are both the same thats a brilliant idea Tractionman ,
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Tractionman
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Joined: 07 Apr 2007
Posts: 821
Location: Bournemouth, Dorset

PostPosted: Sun Oct 17, 2021 18:58    Post subject: Reply with quote

Yep, I'm full of 'em Tony, still trying to catch up with you though. Good call with relay, often overlooked.
I've used that swap trick before, with relays bulbs and fuses, but can't claim fùll credit in this scenario as it came from Trevor yonks ago when he had a/c problems like that.
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ebrian0
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Joined: 03 Sep 2021
Posts: 7
Location: Somerset

PostPosted: Thu Oct 21, 2021 20:49    Post subject: Reply with quote

Many thanks all now working.
It was the relay id checked the primary  but did not check it actually  had output Embarassed
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Tractionman
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Joined: 07 Apr 2007
Posts: 821
Location: Bournemouth, Dorset

PostPosted: Thu Oct 21, 2021 21:20    Post subject: Reply with quote

😀👌
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