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C3 Fuel, Emission Control, and Exhaust Systems

Air Cleaner temp sensor (1/18)
 7/2/05 8:39am
CeeDee
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, - New Zealand

Vette(s):
Silver '81 mostly original C3. Silver interior, bilstiens, big sway bars, headers.


Joined: 3/26/2005
Posts: 232

My '81 is missing the temperature sensor mounted in the air cleaner which controls the vacuum operated flaps in the air cleaner snorkels. I have no idea what it looks like, or where to get one from. All clues appreciated !
Thanx, Chris.


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Kiwi Chris

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Air Cleaner temp sensor (2/18)
 7/6/05 12:27pm
kstyerLifetime Member
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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!


Joined: 12/2/2003
Posts: 6411

It's just a small unit that has two vacuum lines attached.

It senses the air temp in the air cleaner.  Then allows or prevents vacuum to the blend door on the snorkels.  This in turn draws cool air from the outside, or hot air from the stove around the exhaust manifold.  The purpose is to maintain an equal temp in the air filter, and thus the intake manifold.

This allows the car to operate better cold by providing better cold fuel mix, and also allows a more consistant intake on a warm engine.  Air temp is related to air density.  So the carb can keep a more consistant fuel mixture, and a more consistant operation.  It's good for mileage and emissions, as well as cold operation.

It may not always be the best for performance.  Cool intake air is best for that, providing the carb and engine set up will also handle it properly.

Air Cleaner temp sensor (3/18)
 7/6/05 10:34pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 19638

That being said.....( Hi, Ken!) I would think that you could find one in any GM air cleaner from around 78-82 or so. I have been looking for you, but I haven't seen one in any of my catalogs. You might have to take a trip to the "BoneYard", or a swap meet, to find one.
If you're looking for an 'original', there are some 'Vette 'salvage' yards, and some vendors ( Zip, Paragon, etc.) that have used & reconditioned parts available. Just call & ask.

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Joel Adams
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Air Cleaner temp sensor (4/18)
 7/7/05 6:38am
CeeDee
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, - New Zealand

Vette(s):
Silver '81 mostly original C3. Silver interior, bilstiens, big sway bars, headers.


Joined: 3/26/2005
Posts: 232

Thanx for that, I'll keep hunting on the net... not too
many vette boneyards here in NZ !
Chris

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Kiwi Chris

Air Cleaner temp sensor (5/18)
 7/7/05 10:05pm
Ron 78Lifetime Member
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BINGHAMTON, NY - USA

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Joined: 7/19/2003
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It does'nt have to be off a Vette,I would think almost any G.M. air  cleaner would work from an older car,they have been around for a long time.just check around and make sure the part fits on your air cleaner the same way

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Air Cleaner temp sensor (6/18)
 7/8/05 7:41am
CeeDee
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, - New Zealand

Vette(s):
Silver '81 mostly original C3. Silver interior, bilstiens, big sway bars, headers.


Joined: 3/26/2005
Posts: 232

Guys, I've found this sensor on ebay which looks like it might be the right item... could I ask you to check this link out please and let me know ?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd= 1&item=7984992139&category=50459

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Kiwi Chris

Air Cleaner temp sensor (7/18)
 7/8/05 8:22am
Willis76Lifetime Member
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Rockland, MA - USA

Vette(s):
76, L48, 4spd & 09, LS3, 6spd


Joined: 1/30/2003
Posts: 580

If you want to get the correct part, check here for the information. I am not endorsing Doc Rebuild, but I do think he has some of the best illustrations available for our cars. You can get these from just about all of the Vette vendors or GM suppliers.

http://www.docrebuild.com/dr-r-web/AIR-CL2.pdf

Good Luck

 

 

Willis7638541.2244675926

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Air Cleaner temp sensor (8/18)
 7/8/05 10:00pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 19638

Perfect!! The part # 3402522 ( "K" in the Dr. Rebuild pic) should be what you are looking for. Hope you can get this stuff down yonder!!

Here's a clickable link to the above post from CeeDee:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd= 1&item=7984992139&category=50459

That might be the right part on e-bay, but I would go with the Doc, because it would more likely be correct. Adams' Apple38541.797650463

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Joel Adams
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Air Cleaner temp sensor (9/18)
 7/10/05 7:44am
CeeDee
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, - New Zealand

Vette(s):
Silver '81 mostly original C3. Silver interior, bilstiens, big sway bars, headers.


Joined: 3/26/2005
Posts: 232

Thanx for that everyone. I'm off shopping at the Doc. I hope. Wee query for Ken re the cold air for max power thing... Ken, if the Air Cleaner thermostat set up is working correctly, once the engine is warm would not the air supposedly be only coming in through the cold route anyway at that stage, with the warm air option completely closed off by the flap ? Or does it still mix some warm stuff in there anyway.
(He asks without the air cleaner sitting on his knee in front of him to look at !)
Chris.

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Kiwi Chris

Air Cleaner temp sensor (10/18)
 7/10/05 3:47pm
Willis76Lifetime Member
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Rockland, MA - USA

Vette(s):
76, L48, 4spd & 09, LS3, 6spd


Joined: 1/30/2003
Posts: 580

FYI - The Doc's customer service can be trying at times, but you never know. He's not as involved any more (semi-retired), but does have a couple of very nice laddies on the desk that will help in getting you the parts you need.

 

 

 



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