Heater Core

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11-25-2007, 11:43 AM

94 Camaro Z-28

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Join Date: Jul 2007

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Heater Core

I have a stock 94 Camaro Z-28. Occasionally as I'm driving along, I will smell antifreeze inside of the car and then the smell will go away. The windshield fogs up a little, but not all the time. The car is not leaking antifreeze on the ground and I didn't see antifreeze anywhere under the hood. Should I change the heater core or are there any hoses that I need to check for pin holes or anything. Thanks!

Last edited by 94 Camaro Z-28; 11-25-2007 at 12:56 PM.

11-25-2007, 12:30 PM

SS RRR

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Join Date: Oct 1998

Location: Jackstandican

Posts: 3,144

Are your windows fogging up? Could be a problem w/in the engine bay rather than the heater core.

11-25-2007, 01:45 PM

mrmint69

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Join Date: Oct 2006

Location: Post Falls, Idaho

Posts: 2,728

Check the carpet in the front on the passenger side floor and see if its wet. If so, it would be the heater core. Just did my 79z and it was really tight fit so maybe these lt's are better.

11-25-2007, 03:59 PM

BA383TA

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Join Date: Aug 1999

Location: DFW TX

Posts: 1,326

Change the heater core now. It will get worse until you have a small green lake in the flloor.

11-27-2007, 08:20 AM

My94M6

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Join Date: Sep 1999

Location: Granbury, TX

Posts: 118

It's heater core time!

I just changed out the heater core in my '94 Z-28 after the windshield fogged. No mist coming out of the vents (not that I saw anyway), and not much smell, but definitely coolant fog.

The heater core swap isn't too bad, about 3 hours work, taking your time. Others have posted a DIY guide here, do a search and you'll find it.

HTH, and have a good one,
Mike