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tmagnet
Member Since: 07 Mar 2012
Location: Worcestershire
Posts: 66
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Hi, had a search and can't find an answer so....
Is the air compressor supposed to run every time the car is started? Mine seems to run for 1 or 2 minutes after being started. Does't seem to make any difference if it's been left for one week or 10 minutes?
Cheers
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 24th Feb 2014 10:27 pm |
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RobV
Member Since: 13 Nov 2009
Location: Cape Town
Posts: 31
  
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It is normal as far as I know. I have not timed it exactly but it is about a minute or minute and a half.
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| 25th Feb 2014 7:13 am |
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nighthawk
Member Since: 24 Jul 2010
Location: Malta
Posts: 1163
 
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Yes it always runs on startup. It starts up because it needs to build up the gallery pressure which was probably purged when the car was turned off.
About the run time, I have not timed it either but it feels like around 30-45 seconds for me. I will try and time it when I have time.
2 minutes sounds like too much and I'm pretty sure that by that time the compressor would have hit it's thermal cutoff and thrown the yellow suspension fault light on the dash, or if not, it's very close. Dennis
2006 Discovery 3 TDV6 Commercial Manual Buckingham Blue
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| 25th Feb 2014 8:48 am |
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ruggedpeak
Member Since: 10 Jun 2010
Location: UK
Posts: 1625
 
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I recently had extended running times for quite a while, which eventually became running for several minutes then it stop and the warning light came on and normal height only.
I'd suggest your compressor has a problem and is going to fail soon. Assuming its an older/original non-Hitachi compressors you can replace it, or it may be as simple as a small fracture in the top of the air dryer casing between the two pipes, or leaking O Ring.
First steps - read the error codes if you can. If the codes relate to pressure or similar then remove the cover and liberally apply soapy water over the top of the dryer and all connections to see if there is an obvious leak on the compressor or related parts. If not then it will get a bit more technical. Refurb kits are available.
I was going to refurb mine, but there is a post in here about the crack in the dryer casing. Applied soapy water and it was bubbling nicely. Took it off, epoxyed both sides of the dryer case and refitted, now happy as larry  May refurb later or just wait until it dies and replace.
As shown on last post here http://disco3.co.uk/forum/topic76016.html?...p;start=45
If it is the crack, then you will get an error code talking about low pressure (C1A20 - Pressure rising too slowly) the pump keeps running to try and build the pressure and then gives up when it can't achieve it.
Obviously the longer this goes on the more wear on your compressor. so check for simple repairs first.
NOTE: as per this post the bracket will break easily - managed to metal glue mine back together before reattaching. I don't think it will survive another removal!
http://disco3.co.uk/forum/topic64585.html?...r+%2Bcrack
HTH  Tony
Club RLD Wheel Protector & Sump Guard
Club 4x4 Info activated
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| 25th Feb 2014 1:44 pm |
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