MoparFins

Techical Discussions => General Tech => Topic started by: Dan Cluley on March 27, 2009, 05:19:06 PM

Title: Temp sensor in the air cleaner
Post by: Dan Cluley on March 27, 2009, 05:19:06 PM
I've got a question about the temp controlled vacuum switch that is in the air cleaner of the '70s cars.  (the one that controls the damper in the snorkel to feed warm air up from the exhaust)
 
I would like to replace the one in the Dart because it sticks most of the time.  Looking around online I don't see any listings for that part for a '74 Dart.
 
However, on ebay I found these:
 
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220330490813&sspagename=STRK%3AMEWAX%3AIT&viewitem (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220330490813&sspagename=STRK%3AMEWAX%3AIT&viewitem)=
 
The ATS9 seems to have been used on B & C bodies 70-74, plus trucks, vans, etc
 
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270320086876&sspagename=STRK%3AMEWAX%3AIT&viewitem (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270320086876&sspagename=STRK%3AMEWAX%3AIT&viewitem)=
 
The ATS8 seems to have been used on B&C bodies 75+ as well as 75-76 A bodies.
 
Does anyone know what the difference is, and will either one work on my 74?
 
Title: Temp sensor in the air cleaner
Post by: Arlen Vander Hoff on March 27, 2009, 05:45:05 PM
Well Dan the second one seems like it fits more things but I wouldn't stake my life that it is the right one. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270320086876&sspagename=STRK%3AMEWAX%3AIT&viewitem (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270320086876&sspagename=STRK%3AMEWAX%3AIT&viewitem)=   
But I'm confident that if it is close you could make it work!!!
 
 
(http://www.moparfins.com/forum/smileys/smiley18.gif)  Hey when can we fix my odometer??? Its spring!!!
ardog2009-03-27 21:46:50
Title: Temp sensor in the air cleaner
Post by: Stan Paralikis on March 28, 2009, 04:33:07 AM
Play it safe.  Go to your local NAPA. The sensors are made by Standard
                  Motor Products.  Napa has their catalog.  You'll get the right part.  It will cost the same.  You won't par for shipping.  You'll have it the next day.

Title: Temp sensor in the air cleaner
Post by: Dan Cluley on March 28, 2009, 10:31:26 PM
I will definitely check locally, but I did try several online auto parts stores (including Napa and Rockauto) and they did not show anything available.  Since there seem to be gaps in the SMP numbers, I'm afraid they may have discontinued the one that is "correct"
Title: Temp sensor in the air cleaner
Post by: Stan Paralikis on March 29, 2009, 04:06:20 AM
The online NAPA is woefully incomplete.  It won't be in their "normal" lookup computer database.
You have to do a manual lookup in one one of NAPA's actual catalogs.
My local NAPA is "old school".  They have 6 feet of printed catalogs of stuff you would have thought of as being long gone.  If it's quiet and I get one of the old timers, they'll let me sift through them and 9 times out of 10, I eventually find it.

Disclaimer: Your local NAPA may vary.


Title: Temp sensor in the air cleaner
Post by: Stan Paralikis on March 29, 2009, 04:22:22 AM





SMP shows no air cleaner temperature sensor available specifically for your car.
The AT9 is now the only one available retail.
The AT8 on eBay is probably a disco'd item.
You pays yer monies and you take yer chances...

(http://i42.tinypic.com/29zwkmv.jpg)
(http://i43.tinypic.com/15ofqqs.jpg)
(http://i44.tinypic.com/2rqbx5d.jpg)
(http://www.moparfins.com/forum/smileys/smiley9.gif)

Commando12009-03-29 09:39:43
Title: Temp sensor in the air cleaner
Post by: Dan Cluley on March 30, 2009, 01:08:18 AM
I just ordered one of the discontinued one (a different seller has them even cheaper)  using the logic that if it doesn't work, the other will still be available.
Title: Temp sensor in the air cleaner
Post by: Arlen Vander Hoff on March 30, 2009, 02:47:40 PM
good luck Dan!! But if it were me I'd just throw it in the school yard and let the car warm up a few minuets before I took off.
Title: Temp sensor in the air cleaner
Post by: Dan Cluley on April 01, 2009, 08:59:24 PM
Problem is, in the middle of the winter it would take longer to warm it up than the trip itself. (http://www.moparfins.com/forum/smileys/smiley36.gif)
 
 
My new ATS8 arrived today, and I installed it with no problem.   It will take a little more experimenting, but I think maybe it cuts out at a lower temp.
 
According to the FSM, the air is supposed to come from the heat stove until the temp in the air cleaner reaches about 100 degrees.
 
The new sensor seems to switch to the straight snorkle air flow at around 70 degrees
Title: Temp sensor in the air cleaner
Post by: Dan Cluley on April 02, 2009, 11:22:59 PM
Ok, a more careful test indicates that the snorkle completely opens at about 80-85 degrees.  I think that's good enough for now.