Intrepid 2.7 Liter Thermostat Housing

Discussion in 'General Motoring' started by Randy, Nov 21, 2005.

  1. Randy

    Randy Guest

    I have a '99 Intrepid with a 2.7 liter engine that has a thermostat
    housing cover that has a slight leak around the air bleeder vent. The
    housing cover is made of a molded "plastic" and it seems that the leak
    is occurring between the plastic and the brass vent.
    Does anyone know, is this a common 2.7 liter problem and is there an
    easy fix to this rather than spending the $135 that the dealer wants
    for the new cover?
    Thanks for the help.
     
    Randy, Nov 21, 2005
    #1
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  2. If you mean the plastic housing with the Bleed valve about centre top at the
    front of the engine, that is not the thermostat housing according to my
    Chilton Manual. The thermostat is situated on the lower part of the engine
    drivers side.
    I have had leakage in that area for a couple of years, the bleed valve just
    rotates in its housing! I was going to remove the housing but its a bit
    difficult without removing the plenum, so I added some radiator stop leak
    and that seems to have succeeded.,
    "Randy" <> wrote in message
    news:...
    > I have a '99 Intrepid with a 2.7 liter engine that has a thermostat
    > housing cover that has a slight leak around the air bleeder vent. The
    > housing cover is made of a molded "plastic" and it seems that the leak
    > is occurring between the plastic and the brass vent.
    > Does anyone know, is this a common 2.7 liter problem and is there an
    > easy fix to this rather than spending the $135 that the dealer wants
    > for the new cover?
    > Thanks for the help.
    >
     
    Keith Phillips, Nov 21, 2005
    #2
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  3. Randy

    maxpower Guest

    "Randy" <> wrote in message
    news:...
    > I have a '99 Intrepid with a 2.7 liter engine that has a thermostat
    > housing cover that has a slight leak around the air bleeder vent. The
    > housing cover is made of a molded "plastic" and it seems that the leak
    > is occurring between the plastic and the brass vent.
    > Does anyone know, is this a common 2.7 liter problem and is there an
    > easy fix to this rather than spending the $135 that the dealer wants
    > for the new cover?
    > Thanks for the help.
    >

    Don't use stop leak to repair this, it will just cause problems down the
    road. It isn't a common problem but I do see it on some vehicles, if the
    dealer is just gonna charge you $135 I would jump on it.

    Glenn Beasley
    Chrysler Tech
     
    maxpower, Nov 21, 2005
    #3
  4. Randy

    Randy Guest

    The $135 is just to buy the part! To remove the 4 bolts and replace the
    piece............. I can only imagine they will charge at least 1.5
    hours @ $90/hr!...........This is why I'm trying to fix it.
     
    Randy, Nov 22, 2005
    #4
  5. Randy

    Bill Putney Guest

    Randy wrote:
    > I have a '99 Intrepid with a 2.7 liter engine that has a thermostat
    > housing cover that has a slight leak around the air bleeder vent. The
    > housing cover is made of a molded "plastic" and it seems that the leak
    > is occurring between the plastic and the brass vent.
    > Does anyone know, is this a common 2.7 liter problem and is there an
    > easy fix to this rather than spending the $135 that the dealer wants
    > for the new cover?
    > Thanks for the help.
    >


    It is a *very* common problem on the 2.7L. And, as others said, that is
    not the thermostat housing - it is called the outlet housing.

    If someone is quoting you $135 just for the part, you are being heavily
    gouged. Maybe that is parts and labor? Has to be. It is a little
    difficult to replace, as the intake plenum has to be partially removed
    just to get two of the four screws out that hold it to the block.

    The part comes in two forms:
    (1) Just the housing - lists for $63.25 - you should be able to find it
    for $52 at discount dealers.
    (2) The housing plus the tube that connects to it and runs under the
    intake plenum to the heater core - lists for $84 - should be able to
    find for $69.

    You just need the housing (1) - that's the part that fails - the metal
    insert comes loose from the plastic of the housing. Also, the o-ring
    between the tube and the housing should be replaced at the same time
    (should be a $5 part).

    Mine seeped coolant for 2-1/2 years before I finally replaced it. It
    may never have gotten worse - more of a nuisance. The leak was so small
    that I never had to add coolant in the whole 2-1/2 years. Others have
    had the insert twist out completely - especially if shops mess with the
    bleeder - must be the same shops that like to strip the threads out of
    the oil pan drain hole. If that happens, then you have an emergency
    repair on your hands - you have no choice but to replace the housing
    before the car can be used again.

    If you are the only one that works on your car and are likely the only
    one to mess with the bleeder and treat it gently when opening/closing,
    it will probably be OK. But you never know...

    Oh - guess what - the new one I replaced it with seeps coolant - again -
    not enough that I have to add coolant - just keeps dried coolant residue
    around the bleeder insert.

    If it were me, if it is not an active drip or leak and is only seeping
    trace amounts, I would leave it alone. You will be spending money and
    will likely not get an improvement. However, if you are seeing actual
    large drops of water, perhaps you should replace it.

    The parts guy at one dealer told me that he has seen brand new ones
    twist out right out of the box - and he warned me that if I bought a new
    one from him and it did that, that he would not replace it or refund my
    money. Nice system, eh? I just love modern business.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
     
    Bill Putney, Nov 22, 2005
    #5
  6. Randy

    Bill Putney Guest

    Randy wrote:

    > The $135 is just to buy the part! To remove the 4 bolts and replace the
    > piece............. I can only imagine they will charge at least 1.5
    > hours @ $90/hr!...........This is why I'm trying to fix it.
    >


    Find another dealer. See my other post. Part (#4663723AF) is under $85
    list - and that's with the tube that you don't need. Part without tube
    (#4792329) lists for $64. Those are list prices - you can find for $52
    from discount dealers.

    There is some labor involved - it's *not* a simple matter of removing
    the four bolts - the intake plenum essentially has to be removed (at
    least enough to raise it an inch or two). Don't fool yourself into
    thinking you can get the back two bolts out without raising the plenum -
    I though I could with special twisty wrenches, etc. No way around it -
    the plenum has to be raised.

    If you do it, you probably ought to get a set of plenum gaskets - not
    too expensive, and it will ensure that you don't end up with an intake
    leak, which can and does happen if the old gaskets are re-used.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
     
    Bill Putney, Nov 22, 2005
    #6
  7. "Bill Putney" <> wrote in message
    news:dluauv$idi$...
    > Randy wrote:
    > > I have a '99 Intrepid with a 2.7 liter engine that has a thermostat
    > > housing cover that has a slight leak around the air bleeder vent. The
    > > housing cover is made of a molded "plastic" and it seems that the leak
    > > is occurring between the plastic and the brass vent.
    > > Does anyone know, is this a common 2.7 liter problem and is there an
    > > easy fix to this rather than spending the $135 that the dealer wants
    > > for the new cover?
    > > Thanks for the help.
    > >

    >
    > It is a *very* common problem on the 2.7L. And, as others said, that is
    > not the thermostat housing - it is called the outlet housing.
    >
    > If someone is quoting you $135 just for the part, you are being heavily
    > gouged. Maybe that is parts and labor? Has to be. It is a little
    > difficult to replace, as the intake plenum has to be partially removed
    > just to get two of the four screws out that hold it to the block.
    >
    > The part comes in two forms:
    > (1) Just the housing - lists for $63.25 - you should be able to find it
    > for $52 at discount dealers.
    > (2) The housing plus the tube that connects to it and runs under the
    > intake plenum to the heater core - lists for $84 - should be able to
    > find for $69.
    >
    > You just need the housing (1) - that's the part that fails - the metal
    > insert comes loose from the plastic of the housing. Also, the o-ring
    > between the tube and the housing should be replaced at the same time
    > (should be a $5 part).
    >
    > Mine seeped coolant for 2-1/2 years before I finally replaced it. It
    > may never have gotten worse - more of a nuisance. The leak was so small
    > that I never had to add coolant in the whole 2-1/2 years. Others have
    > had the insert twist out completely - especially if shops mess with the
    > bleeder - must be the same shops that like to strip the threads out of
    > the oil pan drain hole. If that happens, then you have an emergency
    > repair on your hands - you have no choice but to replace the housing
    > before the car can be used again.
    >
    > If you are the only one that works on your car and are likely the only
    > one to mess with the bleeder and treat it gently when opening/closing,
    > it will probably be OK. But you never know...
    >
    > Oh - guess what - the new one I replaced it with seeps coolant - again -
    > not enough that I have to add coolant - just keeps dried coolant residue
    > around the bleeder insert.
    >
    > If it were me, if it is not an active drip or leak and is only seeping
    > trace amounts, I would leave it alone. You will be spending money and
    > will likely not get an improvement. However, if you are seeing actual
    > large drops of water, perhaps you should replace it.
    >
    > The parts guy at one dealer told me that he has seen brand new ones
    > twist out right out of the box - and he warned me that if I bought a new
    > one from him and it did that, that he would not replace it or refund my
    > money. Nice system, eh? I just love modern business.
    >


    Is it possible to drill out the bleeder and replace it with a standard
    plastic NPT pipe plug from the hardware store? The plug plus teflon
    tape should be usable for a bleed, assuming there's enough material
    there to be able to tap in pipe threads. Just curious, as I don't have
    one of those engines.

    Ted
     
    Ted Mittelstaedt, Nov 22, 2005
    #7
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