2004 JGC needs new "H-valve" ??
08-23-2004, 09:57 PM
#41
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
it's there on the firewall
"L.W.(ßill) ------ III" wrote:
> I can't think of a valve in an air conditioning system, they might
> be talking about the high pressure switch:
> http://members.***.net/wilsond/Fixes...ssure-high.jpg
> Compressors make noise, your sound may be normal, anyway bring it up
> when you go in to finish the service.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Grand Jeep wrote:
> >
> > A few questions.....
> >
> > Noticed the ac not pumping out cold air. Took it in, and they said the
> > h-valve needed replacing.
> > Just curious if this is a common issue with the grand cherokees?
> >
> > Also, noticed after picking it up from the dealer, whenever the ac (or
> > defrost) is on, I notice a slight clicking noise that coincides directly
> > with engine speed. (put in Neutral, sit idle, slow click, give it a little
> > gas and click picks up) As soon as I turn off the ac or the defrost, the
> > click goes away.
> > The part needed was not in stock, so it's on order, I'm hoping this will go
> > away when they replace the defective part?? Anyone have a clue what's
> > happening here?
"L.W.(ßill) ------ III" wrote:
> I can't think of a valve in an air conditioning system, they might
> be talking about the high pressure switch:
> http://members.***.net/wilsond/Fixes...ssure-high.jpg
> Compressors make noise, your sound may be normal, anyway bring it up
> when you go in to finish the service.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Grand Jeep wrote:
> >
> > A few questions.....
> >
> > Noticed the ac not pumping out cold air. Took it in, and they said the
> > h-valve needed replacing.
> > Just curious if this is a common issue with the grand cherokees?
> >
> > Also, noticed after picking it up from the dealer, whenever the ac (or
> > defrost) is on, I notice a slight clicking noise that coincides directly
> > with engine speed. (put in Neutral, sit idle, slow click, give it a little
> > gas and click picks up) As soon as I turn off the ac or the defrost, the
> > click goes away.
> > The part needed was not in stock, so it's on order, I'm hoping this will go
> > away when they replace the defective part?? Anyone have a clue what's
> > happening here?
08-23-2004, 09:59 PM
#42
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
the dye is harmless and i'm wondering if you are hearing the purge solenoid
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
08-23-2004, 09:59 PM
#43
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
the dye is harmless and i'm wondering if you are hearing the purge solenoid
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
08-23-2004, 09:59 PM
#44
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
the dye is harmless and i'm wondering if you are hearing the purge solenoid
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
08-23-2004, 09:59 PM
#45
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
the dye is harmless and i'm wondering if you are hearing the purge solenoid
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
Grand Jeep wrote:
> thanks everyone, after some more research I found a few hits that explains
> the "h-valve" is in fact the expansion valve. (as some of you noted)
>
> As for the clicking compressor, I know it's not normal, as it was an obvious
> noise I noticed when I went picked up my jeep, and it was not doing that
> before I dropped it off. I'm just trying to figure out what they may have
> removed and/or added to the ac system during the diagnostic process to cause
> the clicking. ?? anyone have any ideas? Maybe some part they checked was
> not re-assembled correctly?? I did notice the florescent dye in some spots,
> so I'm assuming they added the tracer liquid to try and locate any leaks,
> would that stuff cause any issues?
08-23-2004, 10:06 PM
#46
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
mic canic did pass the time by typing:
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
08-23-2004, 10:06 PM
#47
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
mic canic did pass the time by typing:
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
08-23-2004, 10:06 PM
#48
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
mic canic did pass the time by typing:
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
08-23-2004, 10:06 PM
#49
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
mic canic did pass the time by typing:
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
> keep in mind the duct temp spec is 50 degrees at 80 degrees with 80%
> humidity and after reading the ac performance chart the other day i was
> shocked to see such high temps from the ac compared to other dc cars
Talked to a local mechanic about A/C. Seems 134a is good but only up to
about 90deg outside temp then it falls flat on it's face compared to R12.
The seat-o-my-pants feeling is this is correct as the ZJs AC will freeze
my *** out when it's 80 outside but doesn't cool nearly as well at higher
temps.
Guess that also depends on the compressor and coil sizes. Larger coil,
higher transfer rate, more effective cooling.
He sees a lot of 134a systems come in for complaints when they are simply
working as they should. Mr Kim's suggestion was "When it's above 80 always
use recirc." IMHO, good advice.
--
DougW
08-23-2004, 10:43 PM
#50
Guest
Posts: n/a
Re: 2004 JGC needs new "H-valve" ??
Yup: http://www.----------.com/acHValve.jpg
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
mic canic wrote:
>
> it's there on the firewall
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
mic canic wrote:
>
> it's there on the firewall
