Coolant Leak. On & Off

This AM while at the drag strip I was pulled off the line as the car was
leaking coolant. (steady flow from the back of the engine area.) By the time
I got back into the pit area the leak stopped and could not be located.
Drove back into town (about 5 miles) and the leak started again. By the time
I got the car on a ramp the leak stopped. Topped up the overflow reservoir
and everything again seemed OK. Went back to the strip only to have the leak
start again. Went back into town and found that it wasn't leaking again.
Checked the overflow reservoir and it was down so it was again topped up.
Decided to call it a day and drove home (about 120 miles). Temperature
gauge was reading normal. Stopped to check coolant level after 10 miles and
noticed that the reservoir was a little lower. Topped up again and drove
home. When I arrived home the coolant reservoir level was unchanged (full to
the top). I have never ever, ever, seen a leak like this (steady stream of
liquid) just disappear. Leak was at the rear just in front of the bell
housing. Heater hoses were dry. Can anyone help identify the source and why
it would start and stop?? It reminded me of a pressure relief valve going
off and then reseating itself. Other than the radiator cap is there another
similar valve somewhere in the cooling system that could be failing?

--
Richard

'94 GT 'vert
Under Drive Pulleys
Transgo HD2 Reprogramming Kit
High Stall Torque Converter
4:10 Gears
Gripp Sub Frame Connectors (welded)
FRPP Aluminum Drive shaft
FRPP M5400-A Suspension
Laser Red

Does it have a freeze plug back there that is going tango uniform?
ucks that you had to take it home without running it though. Better safe
than sorry though.

Kate



"Richard" > wrote in message
news:u1yJe.137141$%K2.82111@pd7tw1no...
: This AM while at the drag strip I was pulled off the line as the car was
: leaking coolant. (steady flow from the back of the engine area.) By the
time
: I got back into the pit area the leak stopped and could not be located.
: Drove back into town (about 5 miles) and the leak started again. By the
time
: I got the car on a ramp the leak stopped. Topped up the overflow reservoir
: and everything again seemed OK. Went back to the strip only to have the
leak
: start again. Went back into town and found that it wasn't leaking again.
: Checked the overflow reservoir and it was down so it was again topped up.
: Decided to call it a day and drove home (about 120 miles). Temperature
: gauge was reading normal. Stopped to check coolant level after 10 miles
and
: noticed that the reservoir was a little lower. Topped up again and drove
: home. When I arrived home the coolant reservoir level was unchanged (full
to
: the top). I have never ever, ever, seen a leak like this (steady stream of
: liquid) just disappear. Leak was at the rear just in front of the bell
: housing. Heater hoses were dry. Can anyone help identify the source and
why
: it would start and stop?? It reminded me of a pressure relief valve going
: off and then reseating itself. Other than the radiator cap is there
another
: similar valve somewhere in the cooling system that could be failing?
:
: --
: Richard
:
: '94 GT 'vert
: Under Drive Pulleys
: Transgo HD2 Reprogramming Kit
: High Stall Torque Converter
: 4:10 Gears
: Gripp Sub Frame Connectors (welded)
: FRPP Aluminum Drive shaft
: FRPP M5400-A Suspension
: Laser Red
:
:

I don't think a frost plug will "start and stop" leaking. Maybe Jim Warman
can shed some light on the problem?

--
Richard

'94 GT 'vert
Under Drive Pulleys
Transgo HD2 Reprogramming Kit
High Stall Torque Converter
4:10 Gears
Gripp Sub Frame Connectors (welded)
FRPP Aluminum Drive shaft
FRPP M5400-A Suspension
Laser Red

"SVTKate" > wrote in message
k.net...
> Does it have a freeze plug back there that is going tango uniform?
> ucks that you had to take it home without running it though. Better safe
> than sorry though.
>
> Kate
>
>
>
> "Richard" > wrote in message
> news:u1yJe.137141$%K2.82111@pd7tw1no...
> : This AM while at the drag strip I was pulled off the line as the car was
> : leaking coolant. (steady flow from the back of the engine area.) By the
> time
> : I got back into the pit area the leak stopped and could not be located.
> : Drove back into town (about 5 miles) and the leak started again. By the
> time
> : I got the car on a ramp the leak stopped. Topped up the overflow
reservoir
> : and everything again seemed OK. Went back to the strip only to have the
> leak
> : start again. Went back into town and found that it wasn't leaking again.
> : Checked the overflow reservoir and it was down so it was again topped
up.
> : Decided to call it a day and drove home (about 120 miles). Temperature
> : gauge was reading normal. Stopped to check coolant level after 10 miles
> and
> : noticed that the reservoir was a little lower. Topped up again and drove
> : home. When I arrived home the coolant reservoir level was unchanged
(full
> to
> : the top). I have never ever, ever, seen a leak like this (steady stream
of
> : liquid) just disappear. Leak was at the rear just in front of the bell
> : housing. Heater hoses were dry. Can anyone help identify the source and
> why
> : it would start and stop?? It reminded me of a pressure relief valve
going
> : off and then reseating itself. Other than the radiator cap is there
> another
> : similar valve somewhere in the cooling system that could be failing?
> :
> : --
> : Richard
> :
> : '94 GT 'vert
> : Under Drive Pulleys
> : Transgo HD2 Reprogramming Kit
> : High Stall Torque Converter
> : 4:10 Gears
> : Gripp Sub Frame Connectors (welded)
> : FRPP Aluminum Drive shaft
> : FRPP M5400-A Suspension
> : Laser Red
> :
> :
>
>

Richard wrote:

> I don't think a frost plug will "start and stop" leaking. Maybe Jim Warman
> can shed some light on the problem?
>

Coolant leak from head gasket? I think this is possible even if you are
not getting any coolant into the combustion chamber. Other than head
gasket, frost plug or (I dont even want to think it for you) a cracked
casting, there isnt much else to leak in the area you indicated on a 5.0 .