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6 months ago I had the intake elbow and radiator replaced, last month it was the rear main seal.. now I smell antifreeze again. Every once in awhile I will smell a hint of it when starting the car, then it goes away. Today I could smell it when I pulled into work and when I got out, I stuck my nose where the hood meets the fender and it was strong. It doesn't smell like it's burning which is a good thing I guess.
Re: Smelling antifreeze again - I'm about to give up!
UPDATE:
My inspection under the hood included a complete look around the head gaskets, intake, radiator, hoses, lines and over-flow jug. The car does not appear to be leaking or losing coolant anywhere. I've also been looking under the car when I move it and still cannot find even a drip.
The smell occurs when I have been driving the vehicle and come to a stop or park it. The odor is very strong and enters the vents. It can also be smelled if I pop the hood right away after driving it.
I would also like to mention that the passanger floor board is and has been completely dry, and the car warms up properly and operates slightly below 210 degrees.
The intake gasket, elbow and radiator were all replaced 6 months ago.
Re: Smelling antifreeze again - I'm about to give up!
Similar thing happened to my oldsmobile. No wet spots, no low coolant, just maple syrup smell. Turned out to be a hairline crack in the heater core, just enough to let out some vapors. Eventually the heater core exploded rather spectacularly, filling the cabin with steam and dumping all the coolant onto the road. That was the worst midnight tacobell run ever. You might try doing the heater core bypass trick to see if the smell goes away before tearing apart the dash to inspect it. Good luck.
Re: Smelling antifreeze again - I'm about to give up!
It's usually those 2 coolant elbows located right below the alternator. They are plastics and they wear out easily. There are metal ones you can buy but they are expensive.
You can just run to Pep Boys and pick up the GM coolant elbows.
Re: Smelling antifreeze again - I'm about to give up!
It also turns out that transmission fluid is in my cooling system again. I had this repaired 6 months ago.. the trans cooler was leaking into the radiator.
I was told it could just be a little trans fluid left after the system was flushed.
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