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Messages - Andy A

Pages: [1] 2 3 4 5 6 7 8 ... 70
1
From memory, the front fan on a desmond does have the two speeds but there's a series resistor that drops some volts for the low speed, being that there aren't 2 motors to put in series.

Will see if I have wiring diagrams on this laptop to confirm...

Confirmed the front fan has only 2 wires.

I've checked all relays off the car and they are all working fine.

I just don't have the high speed on the front fan.

I need to sort this soon because were going on holiday and taking the car.

2
Can't say as I noticed tbh :-\

Main reason for the parts collection was to fit extra cooling capacity as part of a 2.2 turbo experiment, but chassis rot put paid to the idea...

That would have been an interesting experiment.  8)

3
Both had one. Wiring in the second one was on my list...

I'm thinking the same.

Wonder if anyone on here ever put a second one in. Looks plug and play.

I wonder why Vauxhall didn't put 2 in the front on the Desmonds like the rest.
I acquired the loom, relays and fan from a V6 to do it all long since disposed of :'(

Both front fans are the same but it's a radiator/oil cooler/condenser out job to fit ;)

A fair bit of messing about then.

Can you remember if the front auxiliary fan had a high speed or did the Desmonds rely on the main fan only, for high speed to cool the condenser down if needed?

4
Both had one. Wiring in the second one was on my list...

I'm thinking the same.

Wonder if anyone on here ever put a second one in. Looks plug and play.

I wonder why Vauxhall didn't put 2 in the front on the Desmonds like the rest.

5
Small blue one and green next to it iirc ;)

One of tother green ones is the aircon compressor clutch :y

Al, do you know what the open connector that is connected to the first green relay is?
Donít recall seeing it on either of my Desmonds :-\

Can you remember if your Desmond's had 1 or 2 auxiliary fans?

Min has 1 but it also has a plug in place for another.

6
Small blue one and green next to it iirc ;)

One of tother green ones is the aircon compressor clutch :y

Al, do you know what the open connector that is connected to the first green relay is?

7
I cannot get the auxiliary fan to go to high speed through the test socket under the bonnet.

How is the high speed side of the auxiliary fan controlled?

What relay controls the auxiliary fan and what one controls the main fan?

Thanks

8
I cannot get the auxiliary fan to go to high speed through the test socket under the bonnet.

How is the high speed side of the auxiliary fan controlled?

What relay controls the auxiliary fan and what one controls the main fan?

Thanks


9
Omega General Help / Re: I think I have an aircon problem
« on: 21 August 2019, 15:29:39 »
I want to test the pressure in the aircon system to see if the garage has put too much refrigerant in the system. The noises only started after the recharge.

Can anyone recommend a cheap, half tidy, refrigeration aircon manifold gauge Set?

Does anyone know the data for the high and low side pressure, that is correct for the Omega aircon system and @ what idle speed please?

Grrrr. Power cut after typing in a long reply. Effing national grid. Anyway...

It's actually illegal to work on a charged A/C system without the right qualifications. Which basically means you need an expensive but worthless training course, and a piece of paper with a tick in the right box from the nanny state. So with that in mind...

You can buy AC gauge sets off eBay easily enough, and they'll work. The problems are normally with getting the couplings onto cars filler ports to seal properly. Cheaper couplings tend to leak. However, even if you get the gauges to seal properly they won't tell you much more than you already know. A/C systems aren't filled by pressure, they're filled by mass(weight). The pressures vary by as much as 2:1 depending on the ambient temperature. The filling machine has a set of scales in it, and it measures the weight of the gas cylinder before and during filling. Once the correct mass of gas has been filled, the machine stops. I can't remember the correct weight for an Omega - something like 1.1Kg? 

With the engine not running, the low and high side ports will both show the same pressure - probably somewhere between 40psi(cold day low gas filling) and 100psi (very hot day, very full gas levels).

With the engine running, the high side will increase rapidly to between about 150psi and 300psi. The low side will drop slightly to probably somewhere between 30psi and 50psi.

The compressor is protected by both low and high pressure cut-out switches. If the pressure is too high or too low the compressor will either never turn on, or turn on and off again. It's quite difficult to damage anything by overfilling. Much more likely to damage it by not putting any oil in, or using the wrong sort of oil.

In short, if the top pipe is getting cold, and the compressor is staying engaged all the time (the triangular plate on the front of the compressor spinning) then there is likely to be acceptable levels of gas in it. If you suspect something is wrong, I'd take the car to a different A/C garage and ask them to test it. There may be a nominal charge (£10-£20) but as long as they don't have to drain it all down and re-charge it then you shouldn't have to pay for a full re-charge.

Thanks LC0112G for taking the time to explain and for the info.  :y

Thanks biggriffin.  :y

10
Omega General Help / Re: I think I have an aircon problem
« on: 21 August 2019, 12:25:41 »
I want to test the pressure in the aircon system to see if the garage has put too much refrigerant in the system. The noises only started after the recharge.

Can anyone recommend a cheap, half tidy, refrigeration aircon manifold gauge Set?

Does anyone know the data for the high and low side pressure, that is correct for the Omega aircon system and @ what idle speed please?


11
I looked in maintenance section and it says how to test the fans.

I only have 4 pins in the violet test socket. F1, F2, F3 and F6 in my Desmond 2003. I do not have F4 and F5 in the test socket.

I only have 1 front fan and 1 rear radiator fan.

Ignition off.

F1 turns front and rear radiator fans on low.

F2 turns only the rear fan on high but front fan is not spinning.


Ignition on.

Grounded F1 and F2 terminals and they do nothing. No fans running at all.

If there any owners with a facelift 2.2i, could they check how many test pins they have and could you please test the fans and let me know if they test the same as mine?

Thanks



12
Omega General Help / Re: I think I have an aircon problem
« on: 20 August 2019, 15:54:01 »
The Violet socket in mine only has 4 pins.

On my 2.2i I only have 1 front condenser fan and 1 rear radiator fan on mine.

Ignition off.

F1 turns condenser front and radiator rear fans on low.

F2 turns radiator rear fan on high but front condenser fan is not spinning at all.

Is this normal?

Ignition on and engine not running.

F1 and F2 terminals do nothing. No fans running at all.

Is this normal?

Thanks

13
Omega General Help / Re: I think I have an aircon problem
« on: 20 August 2019, 15:22:47 »
What socket do I test the rad fans high speed from on a 2003 facelift?

The reason I ask is, the Violet connector under the bonnet has only 4 pins in mine and not 6.

14
Omega General Help / Re: I think I have an aircon problem
« on: 20 August 2019, 14:47:09 »
What socket do I test the rad fans high speed from on a 2003 facelift?

15
Omega General Help / Re: I think I have an aircon problem
« on: 19 August 2019, 12:28:54 »
Checked the fans and all smooth running.

Started the engine with the aircon off and all sounded good.

Turned on the aircon and all sounded normal and the aircon is working well, nice and cold. The top aircon pipe in engine bay nice and cold.

After about 10-15 minutes with the aircon on, I here a grumbling noise that I can also feel through the floor of the car slightly and the high speed fans serge. Switch on and off every 2-3 seconds.

The best way I can explain the noise is like a house refrigerator when you first turn it on and you can here the motor/refrigerant grumbling.

This car has never done this in all the years I have owned it. It only started after the aircon re-charge.

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