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 Posted: Sun May 19, 2013 7:37 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
One pin on the loom connector had +ve, or live as you call it.
Now go to the pressostat itself and check resistance between that pin position and the rest of them to see if it switches through.
You have to put the meter on the lowest resistance range (Ω) and check for continuity between the said pin and any/all the other ones on the pressostat socket. |
Ok many thanks, will give it try later when partner brings car back. thanks. would this stop the fan and compressor from working.
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Posted: Sun May 19, 2013 7:44 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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If for some reson that sensor is not switching to indicate at least some pressure in the system, then yes.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 7:51 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
| If for some reson that sensor is not switching to indicate at least some pressure in the system, then yes. |
OK MANY THANKS, car back now so i will give it a go. Thanks
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Posted: Sun May 19, 2013 8:05 am |
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Joined: Jan 16, 2013
Posts: 158
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This is my multi meter, can you tell me if its set right has not sure and not getting a reading. Thanks
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Posted: Sun May 19, 2013 8:08 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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No, put it on ohms 500.
When you touch the probes together the needle will deflect to show continuity. There should be a thumb-wheel on the side of it too which allows 'ohms adjust' to '0' when probes are touched together (calibrate).
The meter must have a working battery in it for ohms to work.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 8:20 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
No, put it on ohms 500.
When you touch the probes together the needle will deflect to show continuity. There should be a thumb-wheel on the side of it too which allows 'ohms adjust' to '0' when probes are touched together (calibrate).
The meter must have a working battery in it for ohms to work.[/ |
many thanks, not working i will check battery
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Posted: Sun May 19, 2013 9:31 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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The battery in my multi meter was fine so just gone and brought a new multi meter
I have set it to this and 2000k but not getting any readings, the black probe i have put to battery earth. You are doing it blind because you can not see anything, but moved the red probe about and get nothing if its set right.
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Posted: Sun May 19, 2013 9:35 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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Better picture of multi meter
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Posted: Sun May 19, 2013 12:09 pm |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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Move the setting one click Counter clockwise from where it is now.
You should get a buzzer from the multimeter every time you touch the leads together.
That means a connection is made.
Then put one probe (doesn't matter which) on the pin in the pressostat which would be connected to the live wire, and use the other lead to touch on each remaining pin. You should get at least one connection (buzzing meter) between them indicating the pressoswitch is activated. If it isn't you either have not pressurised the system properly with gas, or the sensor is faulty (rare).
After this I would strongly recommend you take it to a specialist who will be able to quickly diagnose and fix your problem in the most economical way. You will also have a good idea beforehand when you go to him from doing all the tests and fault-finding so far.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 1:56 pm |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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Many thanks for your help once again, I have tried it again and I get one connection so I take it the switch is ok. I have also checked the measure again and its still at 40 psi. So I am still lost, will see how much it will cost to get checked has going on family hol soon so don't wont to spend much on it.
Do you no if the low speed fan resistor would stop the power to compressor. Thanks
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Posted: Mon May 20, 2013 12:41 pm |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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Well its not going to be worth getting the air con tested and sorted, too much money . I have had to replace my rear brake shoes today and also both rear wheel cylinders needed replacing too has they were weeping slightly.
What else can go wrong with this car, I have done all the work myself and spent around £1000 on it. 
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