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Topic: A/C expansion valve (Read 534 times) |
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Tenfut
Full Member
White Cosworth Saloon
Posts: 640
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A/C expansion valve
« on: Apr 23rd, 2019, 4:15pm » |
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Has anyone changed this valve or is it a job for the A/C specialist. I know the system has to be drained. My idea was to get the system drained, change the valve myself and then get a re-gas. Or would it make sense to let the A/C guy do the whole job.
Reason is fans on high speed much of the time when last summer they hardly hit full speed at all.
TIA
Tony
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2359
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Re: A/C expansion valve
« Reply #1 on: Apr 23rd, 2019, 5:44pm » |
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Personally I would get an A/C guy to do the whole job.
I think you need to have a qualification to work on A/C these days ?
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Torbayboy
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Posts: 900
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Re: A/C expansion valve
« Reply #2 on: Apr 23rd, 2019, 5:59pm » |
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Hello Scorpio mike is right, you have to be qualified to do A/C nowadays.
Had a problem with the new estate's A/C snd local spanner told me this as he was working on it.
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Tenfut
Full Member
White Cosworth Saloon
Posts: 640
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Re: A/C expansion valve
« Reply #3 on: Apr 23rd, 2019, 6:04pm » |
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Thanks guys, never thought of that.
Any ideas of how big a job it is (thinking of cost actually) 
Tony
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a900one
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A scorpio is for life not just for christmas
Posts: 980
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Re: A/C expansion valve
« Reply #4 on: Apr 23rd, 2019, 10:19pm » |
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Hi Tony
I think my expansion valve may be blocked, air con is not very cold and compressor is noisy. The pressure is in the green untill you turn the air con on and then drops to zero. Have you got any other problems other than the fan speed.
Gerald
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Tenfut
Full Member
White Cosworth Saloon
Posts: 640
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Re: A/C expansion valve
« Reply #5 on: Apr 23rd, 2019, 10:26pm » |
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No A/C working fine and nice and cold. Only problem is the fans coming on high speed too early. I have read on here somewhere that it is probably caused by a sticking (needle)?? in the expansion valve.
I am guessing it is A/C related because it doesn't happen if the A/C is switched off.
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scorpio_man
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Ford Kuga awd
Posts: 5654
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Re: A/C expansion valve
« Reply #6 on: May 20th, 2019, 3:18pm » |
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Hi there
You can usually clear the valve by putting system in to a deep vacuum for a good few minutes.
Used to do this to my old car, back in the day.
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Simmo
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Re: A/C expansion valve
« Reply #7 on: May 21st, 2019, 1:43pm » |
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Good to see you still looking in Andrew. Hope all is well with you and yours.
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