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Topic: CC woes :-( (Read 1920 times) |
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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CC woes :-(
« on: Apr 29th, 2010, 4:01pm » |
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Got an issue with my CC.
Compressor packed up a couple of weeks ago and it was replaced with a new one by local garage - de-gassing / re-gassing was done by an A/C specialist just around the corner from them.
Before the compressor packed up the A/C was nice and cold - after the compressor was replaced the A/C is coldish for a while and then goes warm - cold phase not as cold as before and certainly not as cold as it should be.
Car has been back to the garage & A/C specialist today and has the gas taken out, receiver/dryer replaced and re-gassed but is no better.
I've gone through the CC reset a few times but that doesn't seem to improve things.
I'm a bit stumped now so anyone out there in Scorpio Land got any ideas ?
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD 
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tonyboy
Full Member
black2.924Vcoss ( No More )
  
 
Posts: 998
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Re: CC woes :-(
« Reply #1 on: Apr 29th, 2010, 5:15pm » |
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Here's something on CC..... here you might find something that makes sense.. http://www.fordscorpio.co.uk/aircon2.htm
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I think i'm going, erm what do you call it..... Senial.... 
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Kenboy
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I'm a YaBB newbie!
Posts: 703
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Re: CC woes :-(
« Reply #2 on: Apr 29th, 2010, 6:41pm » |
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Hi Mike had the same problem as you, and after many tests and exchange parts the fault was finally traced to the satc PCB, the problem occurs with dry solder joints and are difficult to pinpoint I managed to source a used one and all is now ok, taking out and replacing the pcb is not to difficult, probably about an hours work.
Good Luck Ken
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heliphil58
Junior Member
Scorpio 2.3 saloon 97
Posts: 68
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Re: CC woes :-(
« Reply #3 on: Apr 29th, 2010, 6:54pm » |
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Hi i have the same symtons although mine is air con not cc had compressor changed and dryer. works for a few minutes then runs warm then works when it feels lke it drives me mad especially in the winter when you want to demist
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #4 on: Apr 29th, 2010, 6:59pm » |
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on Apr 29th, 2010, 6:41pm, Kenboy wrote:Hi Mike had the same problem as you, and after many tests and exchange parts the fault was finally traced to the satc PCB, the problem occurs with dry solder joints and are difficult to pinpoint I managed to source a used one and all is now ok, taking out and replacing the pcb is not to difficult, probably about an hours work.
Good Luck Ken |
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Do you mean the control panel in the dash ?
Think I have a spare kicking around !
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Kenboy
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Posts: 703
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Re: CC woes :-(
« Reply #5 on: Apr 30th, 2010, 6:18am » |
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Yes Mike, thats the one
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Simmo
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Posts: 5508
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Re: CC woes :-(
« Reply #6 on: Apr 30th, 2010, 6:31am » |
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on Apr 29th, 2010, 6:59pm, Scorpio_Mike wrote:
Do you mean the control panel in the dash ?
Think I have a spare kicking around ! |
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Now there's a suprise!!. 
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Kenboy
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Re: CC woes :-(
« Reply #7 on: Apr 30th, 2010, 6:34am » |
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Hi Mike let me explain a little more remove the heater control panel you will notice a ribbon connector that comes from the panel to the SATC unit, it is this unit that houses the PCB, my advice to you is to examine the PCB on the replacement for evidence of faulty solder joints as it took me two exchange (Used) units before problem was solved, these units are knocking on in years and are subject to a lot of heat damage causin dry solder joint problems (Cracking).
Good Luck
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #8 on: Apr 30th, 2010, 8:50am » |
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on Apr 30th, 2010, 6:34am, Kenboy wrote:Hi Mike let me explain a little more remove the heater control panel you will notice a ribbon connector that comes from the panel to the SATC unit, it is this unit that houses the PCB, my advice to you is to examine the PCB on the replacement for evidence of faulty solder joints as it took me two exchange (Used) units before problem was solved, these units are knocking on in years and are subject to a lot of heat damage causin dry solder joint problems (Cracking).
Good Luck |
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I'll have another rummage in the shed
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Simmo
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Re: CC woes :-(
« Reply #9 on: Apr 30th, 2010, 9:19am » |
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First problem.....find 'The Shed'......
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Now I'm an OAP
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tlundkvi
Full Member
Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: CC woes :-(
« Reply #10 on: Apr 30th, 2010, 9:51am » |
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on Apr 30th, 2010, 9:19am, Simmo wrote:| First problem.....find 'The Shed'...... |
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Or for some "remember which car" (sorry  )
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #11 on: Apr 30th, 2010, 1:22pm » |
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on Apr 30th, 2010, 9:19am, Simmo wrote:| First problem.....find 'The Shed'...... |
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No problem finding the shed, just getting in there
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #12 on: Jun 29th, 2010, 5:16pm » |
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Finally got round to replacing the control panel with a brand new one I scored off ebay for a tenner...and things are still no better, possibly worse 
At best it blows 'coolish' air and at its worst is more like a blast furnace.
It was all working fine until the compressor seized up...compressor replaced..and now it's not.
Think I may take it to another A/C place for a 2nd opinion.
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: CC woes :-(
« Reply #14 on: Jun 29th, 2010, 10:40pm » |
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Mike.
It's not freezing up on the evaporator due to a duff de-ice switch is it ?
GOZZ.
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #15 on: Jun 30th, 2010, 2:48pm » |
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Seems to be completely random - yesterday did a 10 mile trip and it just blew hot air - in fact turning the A/C off gave cooler air ! Same trip this morning 'cool-ish' air all the way
Seems odd that it should start doing this after the compressor was replaced.
Going to take it to Kwik Fit this afternoon to see if they can sort it - can't make it any worse surely.
Update : Went to Kwik Fit - unable to do anything as their machine is broken. Went to Halfords which is almost next door to see if they have any of those DIY top-up cans - none left !
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #16 on: Jun 30th, 2010, 7:35pm » |
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Had a look in the garage and dug out the pressure gauge which came with the last DIY top-up kit I bought - put it on the low pressure pipe connection ( near the passenger side suspension strut top mount ) and it went straight into the red - it did this last year as well even when the system was low on gas - mobile A/C service person said it was just residual pressure and nothing to worry about I then started the engine up and again checked the pressure - still in the red. Summat not right here
This must be the correct low pressure side connection as the gauge connection will not fit on the receiver / drier port - wrong size.
Summary :
Compressor clutch can be seen to engage.
No signs of green dye staining at any of the joints.
Pipes near the receiver / drier are coldish as is the condenser radiator.
LP pipe temp does not change even after about 10 mins of running.
Checked electrical connection OK to the receiver / drier - pressure switch ?
Any suggestions
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: CC woes :-(
« Reply #17 on: Jun 30th, 2010, 10:33pm » |
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Mike.
I think Kenboy was referring to the satc box behind the control panel from which the ribbon connector protrudes.
Further to my previous post re the de-ice switch,if it blows a good blast from the vents that will not be the problem,as an iced up evaporator almost stops the flow of air.
It almost seems that the compressor isn't moving the gas,if it's turning and the low pressure pipe isn't cold,or as Tompion said could it be a faulty expansion valve ? Scorpio _man was testing systems at Harewood,would he have any further thoughts ?
GOZZ.
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: CC woes :-(
« Reply #18 on: Jul 1st, 2010, 11:52am » |
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GOZZ,
I am thinking the expansion valve may be the culprit - apparently it is common for them to get blocked after compressor seizure - I'll have a look in the shed for a spare one
Obviously I will have to find an A/C company to de-gas the system to get it replaced.
Tried a couple of local mobile A/C firms and they are all booked up till next week. Grrr...
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: CC woes :-(
« Reply #19 on: Jul 1st, 2010, 10:27pm » |
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Blimey Mike,not another foray into THE SHED  do what the dodgy scrappies do,let the gas go up to the ozone layer
GOZZ.
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