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What is this? (picture)


lothos

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Hi guys.

What is this? I'm talking about the valve type thing with the metal cap that spins. It's on a vertical hose or line and is about an inch in front of and to the right of the EGR if you're looking from the front of the car.

P4290003.jpg

The cap on mine spins, and as you can see there's some black gunk under it that I don't remember being there before.

So, what is this, what does it do, and what should I do about the black gunk? :lol:

Thanks guys!

P.S. I found a FSM for my car, vol 1 and 2, on ebay for 25 bucks shipped! Can't wait til it gets here lol

WARNING: I'm a total car newbie, don't be surprised if I ask a stupid question! Just trying to learn.

Cheers!

5% discount code at RockAuto.com - click here for your discount!

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Is that the vent for the transaxle maybe? (hard to tell how big it is in your picture)

Correct, that is the transmission breather

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

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Should I be concerned about the black gunk? Or is that harmless?

WARNING: I'm a total car newbie, don't be surprised if I ask a stupid question! Just trying to learn.

Cheers!

5% discount code at RockAuto.com - click here for your discount!

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Should I be concerned about the black gunk? Or is that harmless?

Be happy to see the 'black gunk'. It proves the transaxle vent check valve is functioning as designed.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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Should I be concerned about the black gunk? Or is that harmless?

Be happy to see the 'black gunk'. It proves the transaxle vent check valve is functioning as designed.

Cool, thanks for the help guys!

WARNING: I'm a total car newbie, don't be surprised if I ask a stupid question! Just trying to learn.

Cheers!

5% discount code at RockAuto.com - click here for your discount!

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I always wondered what that thingy was. Thanks for posting that question. The amount of black gunk surrounding my cap makes yours look clean by comparison. Perhaps one day I'll scrape it off and use it for axle lube. ;)

"Burns" rubber

" I've never considered myself to be all that conservative, but it seems the more liberal some people get the more conservative I become. "

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