Anti-freeze leak

jamie H · 05-19-2008, 02:13 PM

I started my 93 S-10 with a 4.3 and antifreeze sarted leaking into the cab from a vent under the dash, as well as from the the right hand rear of the engin. Does anyone know what would cause this?

**paul8488** · 05-19-2008, 02:35 PM

Hmmm... that doesn't sound encouraging! While I don't know anything about the S10, I had a car that leaked under the dash due to a heater core failure.

We have some good tech guys here who can hopefully help you later. With luck it's just a heater hose and not the heater core!

mike202 · 05-19-2008, 03:07 PM

More than likely than not, it is the heater core. I used to have a 93 S-10, and mine went out. Not a fun job, the dash needs to be (mostly) removed. You can bypass the core for now, while you think about it.

**paul8488** · 05-19-2008, 03:14 PM

Quote:

Originally Posted by mike202

You can bypass the core for now, while you think about it.

Oh yeah, good point. I had to do that. Certainly not an option for winter! Usual;ly it's pretty easy... pull off the inlet and outlet hoses where they go into the firewall and get a coupler to attach them together.

05-19-2008, 02:13 PM	#1 (permalink)
jamie H Walking Join Date: May 2008 Posts: 1	Anti-freeze leak I started my 93 S-10 with a 4.3 and antifreeze sarted leaking into the cab from a vent under the dash, as well as from the the right hand rear of the engin. Does anyone know what would cause this?

05-19-2008, 02:35 PM	#2 (permalink)
paul8488 GMI Europe Editor Join Date: Jul 2003 Location: France Drives: 2006 Yamaha YBR 125 1990 Citroën Ax Posts: 14,549	Re: Anti-freeze leak Hmmm... that doesn't sound encouraging! While I don't know anything about the S10, I had a car that leaked under the dash due to a heater core failure. We have some good tech guys here who can hopefully help you later. With luck it's just a heater hose and not the heater core! __________________ *It's been swell, but the swelling's gone down.*

05-19-2008, 03:07 PM	#3 (permalink)
mike202 Walking Join Date: Sep 2007 Posts: 6	Re: Anti-freeze leak More than likely than not, it is the heater core. I used to have a 93 S-10, and mine went out. Not a fun job, the dash needs to be (mostly) removed. You can bypass the core for now, while you think about it.

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