Car drinks coolant and pees it out
04-19-2012, 08:00 PM
#1
Car drinks coolant and pees it out So I noticed yesterday in low speed/traffic the temp guage starts going to
260. I went and bought a jug of antifreeze and poured WAY more coolant
and water than I needed. I mean embarrasingly more
...I poured so
much because it kept going down somewhere but I didn't think anything of it
because I never saw it leaking. Today I drive it and the temp looks good at
about normal 210ish on the dummy guage but then at a stop it starts
massively leaking coolant where water from a/c usually leaks, I mean back
where the transmission sits.
I can't find anything on this, I would
appreciate any help/advice on what to do from here. Seems to drive okay
except the massive leaking. Only mod I did recently was ls6 intake but before
that I never had it in heavy traffic to notice a high temp. I would like to know how bad I F'ed up and what next.
260. I went and bought a jug of antifreeze and poured WAY more coolant
and water than I needed. I mean embarrasingly more
...I poured so much because it kept going down somewhere but I didn't think anything of it
because I never saw it leaking. Today I drive it and the temp looks good at
about normal 210ish on the dummy guage but then at a stop it starts
massively leaking coolant where water from a/c usually leaks, I mean back
where the transmission sits.
I can't find anything on this, I would appreciate any help/advice on what to do from here. Seems to drive okay
except the massive leaking. Only mod I did recently was ls6 intake but before
that I never had it in heavy traffic to notice a high temp. I would like to know how bad I F'ed up and what next.
04-20-2012, 07:56 AM
#4
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So I noticed yesterday in low speed/traffic the temp guage starts going to
260. I went and bought a jug of antifreeze and poured WAY more coolant
and water than I needed. I mean embarrasingly more...I poured so
much because it kept going down somewhere but I didn't think anything of it
because I never saw it leaking. Today I drive it and the temp looks good at
about normal 210ish on the dummy guage but then at a stop it starts
massively leaking coolant where water from a/c usually leaks, I mean back
where the transmission sits. I can't find anything on this, I would
appreciate any help/advice on what to do from here. Seems to drive okay
except the massive leaking. Only mod I did recently was ls6 intake but before
that I never had it in heavy traffic to notice a high temp. I would like to know how bad I F'ed up and what next.
260. I went and bought a jug of antifreeze and poured WAY more coolant
and water than I needed. I mean embarrasingly more
...I poured so much because it kept going down somewhere but I didn't think anything of it
because I never saw it leaking. Today I drive it and the temp looks good at
about normal 210ish on the dummy guage but then at a stop it starts
massively leaking coolant where water from a/c usually leaks, I mean back
where the transmission sits.
I can't find anything on this, I would appreciate any help/advice on what to do from here. Seems to drive okay
except the massive leaking. Only mod I did recently was ls6 intake but before
that I never had it in heavy traffic to notice a high temp. I would like to know how bad I F'ed up and what next.
the heater core is in there too. if you're leaking coolant out of there, you need a heater core.
04-20-2012, 07:39 PM
#5
Checked heater today sure enough it blows cold air. But I'm not getting any coolant in the carpet like alot of bad heater core cases. Haven't gotten it high enough to trace where exactly its leaking from. Thanks for the responses so far. Just to clarify the symptoms:
Drinks coolant all day
No heat
No leaking thru the car
Leaks fluid back by the transmission
Drives fine, no overheating
I'm going to try to trace the leak, in case its a hose leak before purchasing a heater core.
Drinks coolant all day
No heat
No leaking thru the car
Leaks fluid back by the transmission
Drives fine, no overheating
I'm going to try to trace the leak, in case its a hose leak before purchasing a heater core.
04-22-2012, 12:38 AM
#7
TECH Regular
Also I doubt the heater core is leaking since it's on the outside of the car. Since you said you swapped your intake for an LS6 I'm taking it you blocked off the coolant crossover on the back of the block?
Did you use new block off gaskets on the coolant plugs?
That would drip down the back of the block and down the transmission and also let all kinds of air into the water system and since your heater core is near the top of it air will migrate to it first, causing you to blow cool air out of the heater. That's what I would suspect right off the bat, in fact that is the only place where coolant flows in the back unless you blew a head gasket but I think you would have spotted that by now.
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04-22-2012, 10:22 AM
#8
Also I doubt the heater core is leaking since it's on the outside of the car. Since you said you swapped your intake for an LS6 I'm taking it you blocked off the coolant crossover on the back of the block?
Did you use new block off gaskets on the coolant plugs?
That would drip down the back of the block and down the transmission and also let all kinds of air into the water system and since your heater core is near the top of it air will migrate to it first, causing you to blow cool air out of the heater. That's what I would suspect right off the bat, in fact that is the only place where coolant flows in the back unless you blew a head gasket but I think you would have spotted that by now.
Did you use new block off gaskets on the coolant plugs?
That would drip down the back of the block and down the transmission and also let all kinds of air into the water system and since your heater core is near the top of it air will migrate to it first, causing you to blow cool air out of the heater. That's what I would suspect right off the bat, in fact that is the only place where coolant flows in the back unless you blew a head gasket but I think you would have spotted that by now.
I'm still not sure what I did or didn't do to the coolant pipes. The ls6 I got was already grinded off to fit the 98'-00' coolant piping so I kept it at that. I still need to block off the coolant crossover? Is there anywhere online showing what exactly that should look like? Thanks.Edit: After reading other threads it shouldn't have made any difference using the old coolant crossover. Maybe I caused it to leak when doing the knock sensors and didn't realize it. Not leaking from heater core hoses or heater core. Stumped.
Last edited by foxrox0620; 04-22-2012 at 03:23 PM.
