coolant loss from 99 oldsmobile alero with 3.4L

Check your Throttle body gasket. I had an intermittant leak on my 93
Lesabre, same engine.


On Thu, 18 Nov 2004 10:32:46 GMT, Anthony >
wrote:

(Mike) wrote in news:6cad5565.0411171629.74faeb38
:
>
>> Coolant leaks from the coolant tank thru the overflow tube after the
>> car has warmed up. I need to add coolant every day. The car heats
>> well, and does not overheat as long as i can keep coolant in it. I
>> just changed the upper and lower intake manifold gaskets, and the
>> thermostat, the lower was in poor shape. I have checked the
>> compression, 5 were 170-175psi, 1 was 155psi. Per the service book i
>> have those compressions are within spec. I know i am losing the
>> coolant from the overflow tube because i put the overflow tube in a
>> bottle and ran the car under normal conditions. After driving some 20
>> miles the bottle was full of coolant. This is where its going, I just
>> don't know what is causing it. Help.... Thanks....
>>
>
>
>1 st guess, given the engine: Head gasket
>Things I would check though: Replace the radiator cap, a bad seal will
>let coolant leak by into the overflow.
>Check the oil for a milky residue, just to make sure no coolant is
>getting into the oil.
>If the head gasket is leaking into a coolant passage, you will be getting
>air in the radiator, from a cold start, remove the radiator cap and watch
>for air bubbles as the engine warms up.

For the rcord the Lesabre had a 3.8, much different engine than the 3.4,
although the potentialfor the tb gasket leaks is about the same.
"Finite Guy" > wrote in message
...
> Check your Throttle body gasket. I had an intermittant leak on my 93
> Lesabre, same engine.
>
>
> On Thu, 18 Nov 2004 10:32:46 GMT, Anthony >
> wrote:
>
(Mike) wrote in news:6cad5565.0411171629.74faeb38
:
>>
>>> Coolant leaks from the coolant tank thru the overflow tube after the
>>> car has warmed up. I need to add coolant every day. The car heats
>>> well, and does not overheat as long as i can keep coolant in it. I
>>> just changed the upper and lower intake manifold gaskets, and the
>>> thermostat, the lower was in poor shape. I have checked the
>>> compression, 5 were 170-175psi, 1 was 155psi. Per the service book i
>>> have those compressions are within spec. I know i am losing the
>>> coolant from the overflow tube because i put the overflow tube in a
>>> bottle and ran the car under normal conditions. After driving some 20
>>> miles the bottle was full of coolant. This is where its going, I just
>>> don't know what is causing it. Help.... Thanks....
>>>
>>
>>
>>1 st guess, given the engine: Head gasket
>>Things I would check though: Replace the radiator cap, a bad seal will
>>let coolant leak by into the overflow.
>>Check the oil for a milky residue, just to make sure no coolant is
>>getting into the oil.
>>If the head gasket is leaking into a coolant passage, you will be getting
>>air in the radiator, from a cold start, remove the radiator cap and watch
>>for air bubbles as the engine warms up.
>
>




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Your right! It is the 3.8; but that coolant leak was very strange. It
would leak then it would stop. Very Wierd.

This is a great newsgroup. All of the knowledgeable people here have
given great (and accurate) advice.
Robert



On Mon, 20 Dec 2004 19:39:33 -0500, "Shep" >
wrote:

>For the rcord the Lesabre had a 3.8, much different engine than the 3.4,
>although the potentialfor the tb gasket leaks is about the same.
>"Finite Guy" > wrote in message
.. .
>> Check your Throttle body gasket. I had an intermittant leak on my 93
>> Lesabre, same engine.
>>
>>
>> On Thu, 18 Nov 2004 10:32:46 GMT, Anthony >
>> wrote:
>>
(Mike) wrote in news:6cad5565.0411171629.74faeb38
:
>>>
>>>> Coolant leaks from the coolant tank thru the overflow tube after the
>>>> car has warmed up. I need to add coolant every day. The car heats
>>>> well, and does not overheat as long as i can keep coolant in it. I
>>>> just changed the upper and lower intake manifold gaskets, and the
>>>> thermostat, the lower was in poor shape. I have checked the
>>>> compression, 5 were 170-175psi, 1 was 155psi. Per the service book i
>>>> have those compressions are within spec. I know i am losing the
>>>> coolant from the overflow tube because i put the overflow tube in a
>>>> bottle and ran the car under normal conditions. After driving some 20
>>>> miles the bottle was full of coolant. This is where its going, I just
>>>> don't know what is causing it. Help.... Thanks....
>>>>
>>>
>>>
>>>1 st guess, given the engine: Head gasket
>>>Things I would check though: Replace the radiator cap, a bad seal will
>>>let coolant leak by into the overflow.
>>>Check the oil for a milky residue, just to make sure no coolant is
>>>getting into the oil.
>>>If the head gasket is leaking into a coolant passage, you will be getting
>>>air in the radiator, from a cold start, remove the radiator cap and watch
>>>for air bubbles as the engine warms up.
>>
>>
>
>
>
>
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