Need advice on Cherokee aircon
#21
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
I checked out the following and it was bang on!. It looks like I am low on
fluid after all. This answers my main line of investigation, i.e. is it a
simple electrical fault/bad connection etc that could be simply fixed. (I've
found over the years that it pays to eliminate the simple things first). I
shorted those pins and the clutch came right in. I ran it for about 20
seconds and then shut it all down and it made a stange gurgling sound for
nearly as long. The next thing to figure out is why I am low. I have a funny
feeling that the vehicle has been apart in a major way some time in its life
but I have no history for the car. I can't ask the guy I bought it off as he
moved out of the area, address unknown, and I foolishly didnt chck the air
when I bought it as it was very cold and I never thought about it. (sounds
silly, I know, but I've bought cars in summer too, and never checked the
heater!)
I think -grits teeth-that my next step is to an aircon place and just have
them charge it up and see what happens. But I might just ask to watch.
Is it a lengthy procedure?
Mike
> Odds are your low on refrigerant due to a small leak somewhere. Usually
> in the seals.
>
> Here is how to check the low-side cutoff switch. Do not.. I repeat
> DO NOT run the AC like this for any period of time beyond doing this
> check. It can ruin the compressor.
>
> On the Accumulator
> http://members.***.net/wilsond/Fixes...essure-low.jpg
> there is a sensor. Take the electrical connector off.
>
> Start the engine and turn the AC on.
> Take a piece of wire and connect the two pins in that connector.
> If your low on refrigerant the AC clutch will engage soon as you
> short these pins.
>
> They make 134a refill kits with pressure gauge. This might be
> all you need, but pay close attention to the instructions. If your
> not comfortable with doing this work then you should have a pro do it.
> Ask them if you can watch, that way if you ever have to do it again
> you will know what is involved.
>
> --
> DougW
>
>
fluid after all. This answers my main line of investigation, i.e. is it a
simple electrical fault/bad connection etc that could be simply fixed. (I've
found over the years that it pays to eliminate the simple things first). I
shorted those pins and the clutch came right in. I ran it for about 20
seconds and then shut it all down and it made a stange gurgling sound for
nearly as long. The next thing to figure out is why I am low. I have a funny
feeling that the vehicle has been apart in a major way some time in its life
but I have no history for the car. I can't ask the guy I bought it off as he
moved out of the area, address unknown, and I foolishly didnt chck the air
when I bought it as it was very cold and I never thought about it. (sounds
silly, I know, but I've bought cars in summer too, and never checked the
heater!)
I think -grits teeth-that my next step is to an aircon place and just have
them charge it up and see what happens. But I might just ask to watch.
Is it a lengthy procedure?
Mike
> Odds are your low on refrigerant due to a small leak somewhere. Usually
> in the seals.
>
> Here is how to check the low-side cutoff switch. Do not.. I repeat
> DO NOT run the AC like this for any period of time beyond doing this
> check. It can ruin the compressor.
>
> On the Accumulator
> http://members.***.net/wilsond/Fixes...essure-low.jpg
> there is a sensor. Take the electrical connector off.
>
> Start the engine and turn the AC on.
> Take a piece of wire and connect the two pins in that connector.
> If your low on refrigerant the AC clutch will engage soon as you
> short these pins.
>
> They make 134a refill kits with pressure gauge. This might be
> all you need, but pay close attention to the instructions. If your
> not comfortable with doing this work then you should have a pro do it.
> Ask them if you can watch, that way if you ever have to do it again
> you will know what is involved.
>
> --
> DougW
>
>
#22
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
Mike did pass the time by typing:
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#23
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
Mike did pass the time by typing:
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#24
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
Mike did pass the time by typing:
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#25
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
Mike did pass the time by typing:
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> I checked out the following and it was bang on!. It looks like I am low on
> fluid after all. This answers my main line of investigation, i.e. is it a
> simple electrical fault/bad connection etc that could be simply fixed. (I've
> found over the years that it pays to eliminate the simple things first). I
> shorted those pins and the clutch came right in. I ran it for about 20
> seconds and then shut it all down and it made a stange gurgling sound for
> nearly as long.
That's a normal noise. Your hearing the the system equalize.
> The next thing to figure out is why I am low. I have a funny
> feeling that the vehicle has been apart in a major way some time in its life
> but I have no history for the car.
Nah. There might be a recall for your accumulator (a Jeep dealer can check
to see if it has been done). Other than that, freon loss is usually caused
by leaking seals. Totally normal on older vehicles. Even mine needed new
seals a couple of years ago.
> I think -grits teeth-that my next step is to an aircon place and just have
> them charge it up and see what happens. But I might just ask to watch.
>
> Is it a lengthy procedure?
Hour or less. If they do it properly they will
1) put some leak-check in and locate the leak
2) pump the system down to remove the refrigerant
(required by law in most countries)
3) replace the seals or what ever leaked
4) pump the system down to remove any trapped air
5) refill with refrigerant and test
That's about it.
The quick solution is to put in more gas, but again
in some areas this is illegal. The mechanic has to
fix the leak.
--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#26
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
I ditto that advice too. I would like to add that when you take it to the
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
#27
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
I ditto that advice too. I would like to add that when you take it to the
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
#28
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
I ditto that advice too. I would like to add that when you take it to the
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
#29
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
I ditto that advice too. I would like to add that when you take it to the
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
shop to have it serviced, ask them to install some dye into your system.
That will help the tech to spot your leak the next time it drops out on you.
Jerry
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40BB8E60.CC2FDCE4@***.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Will Honea wrote:
> >
> > R134a is the refrigerant, not the model. If this is the extent of
> > your knowlege, I'd suggest doing without A/C until you either do some
> > serious studying of A/C manuals - or follow the manual advice and find
> > someone who knows what they are doing. Mistakes on this are
> > expensive. As you have expressed a keen interest in you personal body
> > integrity, you should also know that there are serious risks when
> > working on A/C units, especially if you don't know what you are doing.
> >
> > --
> > Will Honea
#30
Guest
Posts: n/a
Re: Need advice on Cherokee aircon
You know it's going to be green at every one of those cheap "O"
ring connections.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Jerry Newton wrote:
>
> I ditto that advice too. I would like to add that when you take it to the
> shop to have it serviced, ask them to install some dye into your system.
> That will help the tech to spot your leak the next time it drops out on you.
>
> Jerry
ring connections.
God Bless America, ßill O|||||||O
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Jerry Newton wrote:
>
> I ditto that advice too. I would like to add that when you take it to the
> shop to have it serviced, ask them to install some dye into your system.
> That will help the tech to spot your leak the next time it drops out on you.
>
> Jerry