Leaking from the dash, what are the possible causes?
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
Leaking from the dash, what are the possible causes?
Hi All,
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
I'm not even sure if the leak is still there. Before it was coolant, never plain water but it did feel a little oily. The new core is fine, no leaks there.
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
Ok, this is interesting, where exactly is it? The gauge is electrical and works off of a pressure switch but isn't the pressure switch screwed into the block with the wires coming off of it that go to the gauge?
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Is it possible your windshield is leaking? Is there rust around the windshield frame? If you can eliminate the core leaking it would be outside water entering the cockpit somewhere.
Drifting
Joined: Oct 2005
Posts: 1,615
Likes: 150
From: Forth Worth TX
Your leak is either anti-freeze (heater core) or water from rain/washing the car.
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
No rust in the pillar or around the windshield. There is what looks like another hot water pressure value under the dash, what is it and could that be it?
The older C3 cars ran an oil line into the back of the gauge and it could leak. It would leak right on top of the radio as the fitting on the back of the gauge would leak. If yours is electric no oil would be inside the car.
Is it possible your windshield is leaking? Is there rust around the windshield frame? If you can eliminate the core leaking it would be outside water entering the cockpit somewhere.
Is it possible your windshield is leaking? Is there rust around the windshield frame? If you can eliminate the core leaking it would be outside water entering the cockpit somewhere.
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Advanced
Joined: Jul 2007
Posts: 63
Likes: 1
From: Newnan Ga.
My 75 use to leak on passenger side from the bolts that hold on the wiper arm pivot. Those bolts go all the way thru with nuts on the inside. The factory black sealant in wiper arm area was all cracked and dried out. Every time I washed the car a little water came in.
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam[/QUOTE]
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam[/QUOTE]
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Nothing other than the core, since you say the leak was coolant and not water.
No in an 80. It's an electric gauge.
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
I'll take a look at this, thanks!
[/QUOTE]
My 75 use to leak on passenger side from the bolts that hold on the wiper arm pivot. Those bolts go all the way thru with nuts on the inside. The factory black sealant in wiper arm area was all cracked and dried out. Every time I washed the car a little water came in.
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam
I'm about to replace the interior on my 80' and I know since I bought the car I had a leak from under the dash getting on the carpet. I just replaced my heater core which was shot and leaking. The floor is still damp and this could be from the old core leaking for so long. However I want to play it safe before ruining a new carpet.
What else could leak under the passenger side of the dash? I'm not concerned about rain or water from the outside as this was always antifreeze.
Just a FYI, I've completely removed the A/C from the car and just have the heater which works now that I have a new core in it.
Thanks,
Sam
Thread Starter
Racer
Joined: Aug 2009
Posts: 483
Likes: 3
From: Pequannock NJ
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
OK, so you THINK it's dry now. Once you pull the carpet up, hose the windshield, wiper area, etc down and then look for other leaks. With carpet out, it should be easy to spot any water coming in. If none, GREAT!