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 Posted: Sat May 18, 2013 9:14 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| macca1411 wrote: |
| V9977 wrote: |
| There are UV dyes that can pin-point where the leak is |
Last time I had air con re-gassed, the guy put a dye in which was similar in colour to the stuff F1 teams use to trace the airflow over the wings. A quick look with the UV light showed where he had spilt a bit, but nothing showed up on the joints.
It may be worth running a UV light over the joints, you never know, there may have been a dye in the last refrigerant
I'm not knocking the DIY fix, but it's only a top up. I don't think it's intended to fill an empty system. You need about 700 grams (+/-20 grams) of refrigerant for the system. I've found a tin of EZ Chill that contains 18 ounces (510 grams) so it is possible that you still don't have sufficient refrigerant to allow the compressor to kick in. |
It should work with 500g though no problem. That's around how much I put-in to reduce drag on the engine and stress on the seals. (Car air-con permanently running in Greece in the summer, often at night-time too)
I believe it still clicks with around 250g in there.
The oil used (100g PAG46) is critical for both the compressor and keeping the seals in good condition. This aspect alone merits a specialist with the proper gear used to vacum the circuit (get's rid of moisture build-up), old oil remnants removed and fresh oil added.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sat May 18, 2013 9:51 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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I checked my air con measure and it has stayed at 40 psi from topping up yesterday, so there is no leak now. The ez chill has the oil and a leak agent in it. This is my facia fuse box.
Is fuse 38 the third fuse on the top from the right, which would be the first dark yellow fuse. If so that fuse was missing and I put a 5amp fuse in.
I have checked the live wire going to the compressor again for live and its still dead. I have also tried turning the compressor and it turns freely.
I am sure that the problem lies with no live going to the compressor, so need to find out whats stopping that. Any ideas ?
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Posted: Sat May 18, 2013 10:08 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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Fuse number should be marked next to the position with small print on the plastic?
Has the BSI ever been replaced in the past?
Does your car have a thermostat module in the engine bay close to the near-side windscreen wiper motor?
Have you visualy checked the presso-stat with the connector going into it? (found on the off-side front part of the engine bay next to the radiator. It's ontop of the air-con pipe going into the dryer canister)
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sat May 18, 2013 1:47 pm |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
Fuse number should be marked next to the position with small print on the plastic?
Has the BSI ever been replaced in the past?
Does your car have a thermostat module in the engine bay close to the near-side windscreen wiper motor?
Have you visualy checked the presso-stat with the connector going into it? (found on the off-side front part of the engine bay next to the radiator. It's ontop of the air-con pipe going into the dryer canister) |
What is the bsi ? Is this the thermostat module ?
Is this the presso stat ?
Do i just need to make sure there is a live going in. Thanks
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Posted: Sat May 18, 2013 6:01 pm |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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The top pic is the power steering presaure sensor switch, not relevant.
The second pic is the pressostat I was talking about, make sure it's pluged-in securely.
BSI is below the cabin fuse block which is the car's electrics/equipment computer.
Thermostat module is fitted on early 206 only, and is close to the passenger windscreen wiper motor in the engine bay.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 2:28 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
The top pic is the power steering presaure sensor switch, not relevant.
The second pic is the pressostat I was talking about, make sure it's pluged-in securely.
BSI is below the cabin fuse block which is the car's electrics/equipment computer.
Thermostat module is fitted on early 206 only, and is close to the passenger windscreen wiper motor in the engine bay. |
My car is a 2001 1.4 lx so not sure if it has a thermosta module fitted . Fuse 38 the numbers are so small hard to make out. Going to have another look today. Thanks
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Posted: Sun May 19, 2013 4:36 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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From what i can make out fuse 38 is the bottom 3rd fuse in from the left, i put a new fuse in even tho it looks fine. I took fuse out checked for a live and its fine.
The pressostat there are 4 wires going to it, green,red,white, and a cream wire, the cream wire is the only wire showing a live.
What could be stopping a live going to the compressor and stopping the engine fan coming on when air con is pressed. The gas is fine so i am hitting a brick wall on what to do next or change.
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Posted: Sun May 19, 2013 4:53 am |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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You could really do with a wiring diagram so that you can check what should and shouldn't be live.
I'll have a look to see if I have one. My hard drive fried a couple of weeks ago so got to find out what I had backed up in various places, but lost loads of stuff and I think wiring diagrams were amongst them.
Not sure if someone with the desktop servicebox can access one
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Posted: Sun May 19, 2013 7:00 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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I believe the prossostat switches a +ve to each of the other 3 wires to indicate the level of pressure to the BSI which handles the air-con system and rad-fan speed etc. So with the connector unplugged it would make sense to only get +ve on one line.
See what resistance you get across the pin on the pressostat where the +ve goes in, and the rest of the pins on there (not the loom connector which plugs into it)
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 7:03 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| macca1411 wrote: |
You could really do with a wiring diagram so that you can check what should and shouldn't be live.
I'll have a look to see if I have one. My hard drive fried a couple of weeks ago so got to find out what I had backed up in various places, but lost loads of stuff and I think wiring diagrams were amongst them.
Not sure if someone with the desktop servicebox can access one |
That would be great, been looking on internet has haynes one very poor, but not found one. Think there is a low speed fan resister loctated in the fan housing so not sure if thats not working and if not would it stop a live to the compressor.
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Posted: Sun May 19, 2013 7:07 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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| V9977 wrote: |
I believe the prossostat switches a +ve to each of the other 3 wires to indicate the level of pressure to the BSI which handles the air-con system and rad-fan speed etc. So with the connector unplugged it would make sense to only get +ve on one line.
See what resistance you get across the pin on the pressostat where the +ve goes in, and the rest of the pins on there (not the loom connector which plugs into it) |
Thanks for your help but you will have to make things simple has no expert on electrics, not a clue what +ve is.
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Posted: Sun May 19, 2013 7:09 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| bikesforme wrote: |
| V9977 wrote: |
I believe the prossostat switches a +ve to each of the other 3 wires to indicate the level of pressure to the BSI which handles the air-con system and rad-fan speed etc. So with the connector unplugged it would make sense to only get +ve on one line.
See what resistance you get across the pin on the pressostat where the +ve goes in, and the rest of the pins on there (not the loom connector which plugs into it) |
Thanks for your help but you will have to make things simple has no expert on electrics, not a clue what +ve is. |
+ve is live as you call it.
The above is very easy to check if you have a multimeter and it will tell you both if the pressostat is working and if you have enough pressure in there as far as the BSI is concerned.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 7:18 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| V9977 wrote: |
| bikesforme wrote: |
| V9977 wrote: |
I believe the prossostat switches a +ve to each of the other 3 wires to indicate the level of pressure to the BSI which handles the air-con system and rad-fan speed etc. So with the connector unplugged it would make sense to only get +ve on one line.
See what resistance you get across the pin on the pressostat where the +ve goes in, and the rest of the pins on there (not the loom connector which plugs into it) |
Thanks for your help but you will have to make things simple has no expert on electrics, not a clue what +ve is. |
+ve is live as you call it.
The above is very easy to check if you have a multimeter and it will tell you both if the pressostat is working and if you have enough pressure in there as far as the BSI is concerned. |
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.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 19, 2013 7:19 am |
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Joined: Jan 16, 2013
Posts: 158
Trade Rating: 0
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I a multi meter but not too sure on what to set it on , if you could explain more i would be very gratefull. Thanks
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Posted: Sun May 19, 2013 7:27 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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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.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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