300E Runs until warm then STOPS

I recall someone mention a switch by the throttle cable going bad... could
someone please elaborate?
 >> Stay informed about: 300E Runs until warm then STOPS 

i had this with a car a long while ago and it was the fuel filler cap not
allowing air into the tank and causing a vaccume try opening the filler cap
when it cuts out and if you hear air rushing in it may be this
"Cor Stil" <costil.DeleteThis@verizon.net> wrote in message
news:5TRii.5996$q12.1842@trnddc08...
>I am wondering if anybody has any experience with a 300E Running good until
>it warms up --- then it shut down. DIES. It won't start until it cools
>down. Have replaced the water pump, the idle control valve, the plugs, the
>plug wires, the distributor cap, almost everything. Any help would be
>highly thanked.
>
 >> Stay informed about: 300E Runs until warm then STOPS 

It is not the Gas cap, It's not the fuel pump. I took the gas cap off, And
the fuel pump has been replaced. It starts just fine, gets warm - not hot -
then falls all over itself when you give it gas, then shuts down. Just tried
it again without the gas cap on and it will last about 10 minutes, then
dies, won't restart. I have tried all I know to get it going but, I
obviously don't know much, cause it still dies.
"Tiger" <tiger0002 DeleteThis @hotmail.com> wrote in message
news:ax7ji.5828$u37.5345@newsfe12.lga...
>I recall someone mention a switch by the throttle cable going bad... could
>someone please elaborate?
>
 >> Stay informed about: 300E Runs until warm then STOPS 

Just a little bit of a dilemma. I live in Long Beach, Calif. Anybody know
of a good mercedes mechanic around here. I have the 300E with the problem,
a 500 SEC no known problems, a 300 CE just idles high when you start it,
again thanks to everybody for their help....
"Cor Stil" <costil.DeleteThis@verizon.net> wrote in message
news:5TRii.5996$q12.1842@trnddc08...
>I am wondering if anybody has any experience with a 300E Running good until
>it warms up --- then it shut down. DIES. It won't start until it cools
>down. Have replaced the water pump, the idle control valve, the plugs, the
>plug wires, the distributor cap, almost everything. Any help would be
>highly thanked.
>
 >> Stay informed about: 300E Runs until warm then STOPS 

T.G.
It shuts down like It got shot, I mean it does not die it groans and acts
like its getting to much fuel when you step on the gas, it, oh how do you
say it, sounds like a dying bull, it sort of like back fires thru and just
sounds awful. When you let off the gas it goes back to idle, but when warm,
it varies idle speed. It got hot and shut down, that's why it has a new
water pump, it went bad, ever since then I've had the problem with shutting
down....any ideas besides what you've already written....

"-->> T.G. Lambach <<--" <"T.G. Lambach at NoHamorSpamcomcast.net"> wrote in
message news:gPudnTlZoPYmmhHbnZ2dnUVZ_vGinZ2d@comcast.com...
> If it simply stops running as if the ignition key were turned to OFF then
> I'd suspect and electrical heat caused failure. No spark. First thought in
> that direction is a bad ignition coil.
>
> But if the motor sputters to a stop with gasps and surges, a fuel
> starvation problem is most likely the cause. However, fuel starvation is
> usually not heat related but usually tied to engine load - like climbing a
> hill etc.
> --
> © 2007 T.G.Lambach. Publication in any form requires prior written
> permission.
 >> Stay informed about: 300E Runs until warm then STOPS 

Cor Stil wrote:
> It is not the Gas cap, It's not the fuel pump. I took the gas cap off, And
> the fuel pump has been replaced. It starts just fine, gets warm - not hot -
> then falls all over itself when you give it gas, then shuts down. Just tried
> it again without the gas cap on and it will last about 10 minutes, then
> dies, won't restart. I have tried all I know to get it going but, I
> obviously don't know much, cause it still dies.

Could be an o-ring gasket problem in the main fuel pressure regulator.
As long as the motor is cold below working temperature the warming up
fuel regulator opens an electric heated pressure/temperature dependent
bypass with full pump pressure. The bypass will close after 10 min and
may let the fuel distributor without pressure. The pressure regulator
unit regulates the pressure by opening partially the back flow line to
the tank. Its a cheap little thing like the interior of a ballpoint pen.

--

Roland Franzius
 >> Stay informed about: 300E Runs until warm then STOPS 

I had a 1979 Cad Seville.. with the same problem.. had to replaced the
computer...

"Cor Stil" <costil RemoveThis @verizon.net> wrote in message
news:5TRii.5996$q12.1842@trnddc08...
>I am wondering if anybody has any experience with a 300E Running good until
>it warms up --- then it shut down. DIES. It won't start until it cools
>down. Have replaced the water pump, the idle control valve, the plugs, the
>plug wires, the distributor cap, almost everything. Any help would be
>highly thanked.
>
 >> Stay informed about: 300E Runs until warm then STOPS 

On Jul 7, 5:50 am, "AndThenSome" <bargil... RemoveThis @remove101hotmail.com>
wrote:
> I had a 1979 Cad Seville.. with the same problem.. had to replaced the
> computer...
>
> "Cor Stil" <cos... RemoveThis @verizon.net> wrote in message
>
> news:5TRii.5996$q12.1842@trnddc08...
>
> >I am wondering if anybody has any experience with a 300E Running good until
> >it warms up --- then it shut down. DIES. It won't start until it cools
> >down. Have replaced the water pump, the idle control valve, the plugs, the
> >plug wires, the distributor cap, almost everything. Any help would be
> >highly thanked.

Maybe the fuel system is not delivering fuel enough - 4.5./5.5 bar -
when warm. Try to fix it replacing the fuel pressure acumulator. My
300E has the same problem to restart when warm, my guess is this part
is faulty. HTH,

Renato
 >> Stay informed about: 300E Runs until warm then STOPS 

Thank you all, I woill try lolking at the fuel system. Again THANK YOU ALL
"mobi" <mbklass.RemoveThis@gmail.com> wrote in message
news:1183898399.227671.300940@w3g2000hsg.googlegroups.com...
> On Jul 7, 5:50 am, "AndThenSome" <bargil....RemoveThis@remove101hotmail.com>
> wrote:
>> I had a 1979 Cad Seville.. with the same problem.. had to replaced the
>> computer...
>>
>> "Cor Stil" <cos....RemoveThis@verizon.net> wrote in message
>>
>> news:5TRii.5996$q12.1842@trnddc08...
>>
>> >I am wondering if anybody has any experience with a 300E Running good
>> >until
>> >it warms up --- then it shut down. DIES. It won't start until it cools
>> >down. Have replaced the water pump, the idle control valve, the plugs,
>> >the
>> >plug wires, the distributor cap, almost everything. Any help would be
>> >highly thanked.
>
> Maybe the fuel system is not delivering fuel enough - 4.5./5.5 bar -
> when warm. Try to fix it replacing the fuel pressure acumulator. My
> 300E has the same problem to restart when warm, my guess is this part
> is faulty. HTH,
>
> Renato
>
 >> Stay informed about: 300E Runs until warm then STOPS 

On Jul 8, 7:39 am, mobi <mbkl... RemoveThis @gmail.com> wrote:
> On Jul 7, 5:50 am, "AndThenSome" <bargil... RemoveThis @remove101hotmail.com>
> wrote:
>
> > I had a 1979 Cad Seville.. with the same problem.. had to replaced the
> > computer...
>
> > "Cor Stil" <cos... RemoveThis @verizon.net> wrote in message
>
> >news:5TRii.5996$q12.1842@trnddc08...
>
> > >I am wondering if anybody has any experience with a 300E Running good until
> > >it warms up --- then it shut down. DIES. It won't start until it cools
> > >down. Have replaced the water pump, the idle control valve, the plugs, the
> > >plug wires, the distributor cap, almost everything. Any help would be
> > >highly thanked.
>
> Maybe the fuel system is not delivering fuel enough - 4.5./5.5 bar -
> when warm. Try to fix it replacing the fuel pressure acumulator. My
> 300E has the same problem to restart when warm, my guess is this part
> is faulty. HTH,
>
> Renato

My 89 300E has a similar problem although it manifests itself when
sitting over two weeks. I have ordered a fuel filter and will take
any other advise. Coil wire looked frayed as well, new wires coming.

Is there a 'warm transmitter' that may be shot. I know there is a
cold start transmitter. Oddly, I filled the radiator overflow and
the problem went away. (it was low)?
 >> Stay informed about: 300E Runs until warm then STOPS 

I had this exact problem. I described it to my daughter who works in sales
at MB. She took it to the guys in the shop and they diagnosed it
immediately. It is the top-dead-center sensor (alternately crankshaft
position sensor) that senses the position of the crankshaft and sends
positional information to the computer to tell it when to spark. The
problem started occasionally, and got worse over time, especially as the
summer came. Evenutally, it was happening every seven or eight minutes.

It can be replaced very easily. If the engine is lying front-to-back in
your car, it is near the back of the block on the drivers side (left hand
drive car) You
need one screwdriver or hex wrench, can't remember which. A single screw
removed lets you retract it. Be careful, the new one didn't come with a
screw and the part is quite deep down. Don't drop the screw. Once in
place, everything worked perfectly right away and never failed again. It
comes
with a rudimentary diagram showing the location. The part
cost me about $65 due to my daughetr working there. I would guess about
$125
at retail prices.

"Steve" <nowayman.RemoveThis@engineering.uiuc.edu> wrote in message
news:1185141179.843976.275130@k79g2000hse.googlegroups.com...
> On Jul 8, 7:39 am, mobi <mbkl....RemoveThis@gmail.com> wrote:
> > On Jul 7, 5:50 am, "AndThenSome" <bargil....RemoveThis@remove101hotmail.com>
> > wrote:
> >
> > > I had a 1979 Cad Seville.. with the same problem.. had to replaced the
> > > computer...
> >
> > > "Cor Stil" <cos....RemoveThis@verizon.net> wrote in message
> >
> > >news:5TRii.5996$q12.1842@trnddc08...
> >
> > > >I am wondering if anybody has any experience with a 300E Running good
until
> > > >it warms up --- then it shut down. DIES. It won't start until it
cools
> > > >down. Have replaced the water pump, the idle control valve, the
plugs, the
> > > >plug wires, the distributor cap, almost everything. Any help would be
> > > >highly thanked.
> >
> > Maybe the fuel system is not delivering fuel enough - 4.5./5.5 bar -
> > when warm. Try to fix it replacing the fuel pressure acumulator. My
> > 300E has the same problem to restart when warm, my guess is this part
> > is faulty. HTH,
> >
> > Renato
>
> My 89 300E has a similar problem although it manifests itself when
> sitting over two weeks. I have ordered a fuel filter and will take
> any other advise. Coil wire looked frayed as well, new wires coming.
>
> Is there a 'warm transmitter' that may be shot. I know there is a
> cold start transmitter. Oddly, I filled the radiator overflow and
> the problem went away. (it was low)?
>
 >> Stay informed about: 300E Runs until warm then STOPS 

Further to this one: The unit fails to give a signal when hot, thermal
runaway or similar effect. When the heat from the block reaches the unit
and it hits the fail temperature, you're dead. When it cools down again, it
start first time. On a mild day, this can take up to 35 - 40 minutes. In
Winter I guess it would be faster, especially on the East Coast.

If yours does this, this is the problem, 99% sure.

"John Doherty" <john22160 DeleteThis @sbcglobal.net> wrote in message
news:3nGsi.2841$AC7.2464@newssvr19.news.prodigy.net...
> I had this exact problem. I described it to my daughter who works in
sales
> at MB. She took it to the guys in the shop and they diagnosed it
> immediately. It is the top-dead-center sensor (alternately crankshaft
> position sensor) that senses the position of the crankshaft and sends
> positional information to the computer to tell it when to spark. The
> problem started occasionally, and got worse over time, especially as the
> summer came. Evenutally, it was happening every seven or eight minutes.
>
> It can be replaced very easily. If the engine is lying front-to-back in
> your car, it is near the back of the block on the drivers side (left hand
> drive car) You
> need one screwdriver or hex wrench, can't remember which. A single screw
> removed lets you retract it. Be careful, the new one didn't come with a
> screw and the part is quite deep down. Don't drop the screw. Once in
> place, everything worked perfectly right away and never failed again. It
> comes
> with a rudimentary diagram showing the location. The part
> cost me about $65 due to my daughetr working there. I would guess about
> $125
> at retail prices.
>
> "Steve" <nowayman DeleteThis @engineering.uiuc.edu> wrote in message
> news:1185141179.843976.275130@k79g2000hse.googlegroups.com...
> > On Jul 8, 7:39 am, mobi <mbkl... DeleteThis @gmail.com> wrote:
> > > On Jul 7, 5:50 am, "AndThenSome" <bargil... DeleteThis @remove101hotmail.com>
> > > wrote:
> > >
> > > > I had a 1979 Cad Seville.. with the same problem.. had to replaced
the
> > > > computer...
> > >
> > > > "Cor Stil" <cos... DeleteThis @verizon.net> wrote in message
> > >
> > > >news:5TRii.5996$q12.1842@trnddc08...
> > >
> > > > >I am wondering if anybody has any experience with a 300E Running
good
> until
> > > > >it warms up --- then it shut down. DIES. It won't start until it
> cools
> > > > >down. Have replaced the water pump, the idle control valve, the
> plugs, the
> > > > >plug wires, the distributor cap, almost everything. Any help would
be
> > > > >highly thanked.
> > >
> > > Maybe the fuel system is not delivering fuel enough - 4.5./5.5 bar -
> > > when warm. Try to fix it replacing the fuel pressure acumulator. My
> > > 300E has the same problem to restart when warm, my guess is this part
> > > is faulty. HTH,
> > >
> > > Renato
> >
> > My 89 300E has a similar problem although it manifests itself when
> > sitting over two weeks. I have ordered a fuel filter and will take
> > any other advise. Coil wire looked frayed as well, new wires coming.
> >
> > Is there a 'warm transmitter' that may be shot. I know there is a
> > cold start transmitter. Oddly, I filled the radiator overflow and
> > the problem went away. (it was low)?
> >
>
>
 >> Stay informed about: 300E Runs until warm then STOPS