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Discuss '02 300M A/C overhaul in the rec.autos.makers.chrysler forum at Car Dealer Forums; so now that it is operational, what kind of pressures are you seeing? "Percival P. ...
  1. #11
    Rob
    Guest

    Default Re: '02 300M A/C overhaul -- the final report

    so now that it is operational, what kind of pressures are you seeing?


    "Percival P. Cassidy" <Nobody@NotMyISP.net> wrote in message
    news:jv6q1h$3gh$1@dont-email.me...
    > On 07/13/12 12:39 pm, I wrote:
    >> On 07/03/12 08:36 pm, I wrote:
    >>
    >>> I'm about to tackle the replacement of the evaporator, heater core and
    >>> receiver-drier on our '02 300M.

    >>
    >> <snip>
    >>
    >> I have at last got everything apart and have almost all that I need to
    >> restore it to normal operation,
    >>
    >> Removing screws, nut, bolts and air-circulation pipes, and disconnecting
    >> electrical connectors to remove the whole instrument panel/dashboard was
    >> tedious but comparatively straightforward, except that not all the
    >> connectors' "latches" worked the same way: some were press-to-release,
    >> whereas others had to be pried outward to release the connector.
    >>
    >> The real nightmare was disconnecting the heater hoses at the firewall:
    >> the spring hose clamps were extremely difficult to release with the
    >> tools I had and not easy to release even with the special tool I bought.
    >> Even after moving the clamps out of the way, getting the hoses off was
    >> not easy. I ended up slitting the heater-to-block hose and buying a new
    >> one, but I persevered with the other one because of the difficulty of
    >> getting at the other end to remove the clamp. The service manual said to
    >> replace the clamps by new ones of the same kind, but nobody seems to
    >> sell that size, and even the Chrysler dealer said they just discard them
    >> and use regular screw hose clamps because the fancy spring clamps fail
    >> too often; it's a good job I happened to have a stash of the right size
    >> regular clamps, because they are very difficult to find just now as a
    >> result of the lawn-sprinkler maintenance being performed during our
    >> heatwave.
    >>
    >> The heater core I had bought from Advance Auto Parts too long ago to
    >> return fits but has a pathetically small surface area compared to the
    >> original; maybe it would be fine in a climate where the winters are not
    >> as severe. I now have from NAPA one that looks identical to the original.
    >>
    >> The evaporator core I had bought from Advance too long ago to return
    >> turned out to have a different style of connector from the original, and
    >> at the NAPA Web site I discovered that there had been a change during
    >> the model year and that I needed one that was specified for the '03
    >> model.
    >>
    >> I guess I can sell the other heater and evaporator cores on eBay.
    >>
    >> The one thing I have not been able to buy is the Styrofoam insert that
    >> goes under the evaporator. The original was in a real mess as a result
    >> of the leaking PAG lubricant, and the only way to buy it was, the
    >> Chrysler dealer told me, as part of an HVAC installation kit that had to
    >> be ordered specially (US$103), but when it arrived it did not include
    >> that item; it turned out that the parts guy did not know what Styrofoam
    >> was and was thinking of the soft foam that is used in various places in
    >> the HVAC system. They eventually found out that it comes with the
    >> genuine Chrysler evaporator (US$416) and is not available otherwise, so
    >> I'm going to make do with the original one, crappy though it may now be
    >> -- perhaps with a layer of duct tape over it.
    >>
    >> In addition, once I removed the air cleaner I could see that a clamp
    >> holding the suction tube/hose in place was almost totally eaten away and
    >> that there was white corrosion on the tube at that point; that most
    >> likely explains the gradual deterioration of the cooling function before
    >> it finally died with a hiss. I got a replacement from Advance, who
    >> messed up the expedited shipping I requested but ended up by refunding
    >> the whole of the shipping charge. NAPA and Autozone list only the
    >> discharge hose, not the suction hose.
    >>
    >> The receiver-drier I had bought from Advance appears to be fine.

    >
    > It turned out that the suction hose I had purchased from Advance Auto
    > Parts did not fit, thanks to the mid-year engineering change. I was able
    > to return it to one of the local stores, but the only '03-style suction
    > hose I could track down was a genuine Mopar one with a list price of $122,
    > but I discovered "We R" Mopar" (wermopar.com), which shares a physical
    > address with Taylor Chrysler Dodge Jeep in Bourbonnais, IL) and sells the
    > genuine article for only $80.03. I told the customer service person the
    > VIN of my vehicle and he was able to tell me the exact part number I
    > needed, although I still had to order it on their Web site.
    >
    > I had thought originally that I would put everything together at least to
    > the point of being able to drive the car to an a/c specialist to evacuate
    > and recharge the system, but I realized that if a leak were discovered at
    > that point a great deal of disassembly might be necessary to remedy it, so
    > I got an el-cheapo vacuum pump and gauge set at Harbor Fright (and was
    > able to use some coupons as well, to lower the price still further) and
    > was able to do everything myself.
    >
    > Perce
    >
    >
    >
    >
    >
    >
    >
    >
    >
    >






    › See More: '02 300M A/C overhaul

  2. #12
    Percival P. Cassidy
    Guest

    Default Re: '02 300M A/C overhaul -- the final report

    I forget the actual pressures now (I actually finished the job about ten
    days ago), but when I checked they were in line with the table in the
    service manual.

    Perce

    On 07/31/12 08:09 am, Rob wrote:
    > so now that it is operational, what kind of pressures are you seeing?
    >
    >
    > "Percival P. Cassidy"<Nobody@NotMyISP.net> wrote in message
    > news:jv6q1h$3gh$1@dont-email.me...
    >> On 07/13/12 12:39 pm, I wrote:
    >>> On 07/03/12 08:36 pm, I wrote:
    >>>
    >>>> I'm about to tackle the replacement of the evaporator, heater core and
    >>>> receiver-drier on our '02 300M.
    >>>
    >>> <snip>
    >>>
    >>> I have at last got everything apart and have almost all that I need to
    >>> restore it to normal operation,
    >>>
    >>> Removing screws, nut, bolts and air-circulation pipes, and disconnecting
    >>> electrical connectors to remove the whole instrument panel/dashboard was
    >>> tedious but comparatively straightforward, except that not all the
    >>> connectors' "latches" worked the same way: some were press-to-release,
    >>> whereas others had to be pried outward to release the connector.
    >>>
    >>> The real nightmare was disconnecting the heater hoses at the firewall:
    >>> the spring hose clamps were extremely difficult to release with the
    >>> tools I had and not easy to release even with the special tool I bought.
    >>> Even after moving the clamps out of the way, getting the hoses off was
    >>> not easy. I ended up slitting the heater-to-block hose and buying a new
    >>> one, but I persevered with the other one because of the difficulty of
    >>> getting at the other end to remove the clamp. The service manual said to
    >>> replace the clamps by new ones of the same kind, but nobody seems to
    >>> sell that size, and even the Chrysler dealer said they just discard them
    >>> and use regular screw hose clamps because the fancy spring clamps fail
    >>> too often; it's a good job I happened to have a stash of the right size
    >>> regular clamps, because they are very difficult to find just now as a
    >>> result of the lawn-sprinkler maintenance being performed during our
    >>> heatwave.
    >>>
    >>> The heater core I had bought from Advance Auto Parts too long ago to
    >>> return fits but has a pathetically small surface area compared to the
    >>> original; maybe it would be fine in a climate where the winters are not
    >>> as severe. I now have from NAPA one that looks identical to the original.
    >>>
    >>> The evaporator core I had bought from Advance too long ago to return
    >>> turned out to have a different style of connector from the original, and
    >>> at the NAPA Web site I discovered that there had been a change during
    >>> the model year and that I needed one that was specified for the '03
    >>> model.
    >>>
    >>> I guess I can sell the other heater and evaporator cores on eBay.
    >>>
    >>> The one thing I have not been able to buy is the Styrofoam insert that
    >>> goes under the evaporator. The original was in a real mess as a result
    >>> of the leaking PAG lubricant, and the only way to buy it was, the
    >>> Chrysler dealer told me, as part of an HVAC installation kit that had to
    >>> be ordered specially (US$103), but when it arrived it did not include
    >>> that item; it turned out that the parts guy did not know what Styrofoam
    >>> was and was thinking of the soft foam that is used in various places in
    >>> the HVAC system. They eventually found out that it comes with the
    >>> genuine Chrysler evaporator (US$416) and is not available otherwise, so
    >>> I'm going to make do with the original one, crappy though it may now be
    >>> -- perhaps with a layer of duct tape over it.
    >>>
    >>> In addition, once I removed the air cleaner I could see that a clamp
    >>> holding the suction tube/hose in place was almost totally eaten away and
    >>> that there was white corrosion on the tube at that point; that most
    >>> likely explains the gradual deterioration of the cooling function before
    >>> it finally died with a hiss. I got a replacement from Advance, who
    >>> messed up the expedited shipping I requested but ended up by refunding
    >>> the whole of the shipping charge. NAPA and Autozone list only the
    >>> discharge hose, not the suction hose.
    >>>
    >>> The receiver-drier I had bought from Advance appears to be fine.

    >>
    >> It turned out that the suction hose I had purchased from Advance Auto
    >> Parts did not fit, thanks to the mid-year engineering change. I was able
    >> to return it to one of the local stores, but the only '03-style suction
    >> hose I could track down was a genuine Mopar one with a list price of $122,
    >> but I discovered "We R" Mopar" (wermopar.com), which shares a physical
    >> address with Taylor Chrysler Dodge Jeep in Bourbonnais, IL) and sells the
    >> genuine article for only $80.03. I told the customer service person the
    >> VIN of my vehicle and he was able to tell me the exact part number I
    >> needed, although I still had to order it on their Web site.
    >>
    >> I had thought originally that I would put everything together at least to
    >> the point of being able to drive the car to an a/c specialist to evacuate
    >> and recharge the system, but I realized that if a leak were discovered at
    >> that point a great deal of disassembly might be necessary to remedy it, so
    >> I got an el-cheapo vacuum pump and gauge set at Harbor Fright (and was
    >> able to use some coupons as well, to lower the price still further) and
    >> was able to do everything myself.
    >>
    >> Perce
    >>
    >>
    >>
    >>
    >>
    >>
    >>
    >>
    >>
    >>

    >
    >



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