I just went down to the local parts store to get a BBD rebuild kit and a super six air filter element, and was going to get an air cleaner temp sensor and find that standard/ borg warner, etc.... have discontinued them... my local NAPA even says echlin has dropped them from their offerings... sheesh, I wonder what's next...!?!?

Time to go see if those $$$ OEM guys can get a 4026483 for me...LOL

(I guess I'll start weeding through those stock air cleaners and get rid of my spares with bad sensors... yipes!)

-D.Idiot

I ran into this not long ago when I needed an air cleaner temp sensor for my '70 and another for the neighbour's '74. You ought to be able to still get a Standard # ATS9 or Niehoff #FE612, which, together with the Standard ATS8, is the actual exact-replacement item. RockAuto still show the ATS8 in stock, though you'd want to double-check. ATS9 will work, the calibration's just slightly different. No big deal, and certainly better than a dead one!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I'll get one ordered, it's not good when even the mom and pop shop that caters to our kind of crowd throws up their hands and says "It started a couple years ago, even the Chevy guys can't get those anymore..."

As much as I loath to go into a Schuck's any more they do carry/ can order niehoff and Standard, I'll try rockauto first though.

-D.Idiot

Try TBI stuff, they existed longer till 95 in chrysler cars.

They still use the heated air sensors and is replaceable item.

Cheers, Wizard

Wizard's got a good backup plan there. The TBI air cleaners use the same temp sensor as the carbureted ones (perhaps with slightly different calibration). Factory p/n is 4342 765 and still shows as a valid, available number. The aftermarket doesn't appear to supply this item.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

What purpose does it serve on a carb motor? And is it really necessary?

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

Same purpose it serves on a TBI motor — it controls the thermostatic air cleaner's hot/cold air damper actuator so that the intake air temp is held as close to constant as possible. Only hot air (heated by the sheetmetal "stove" attached to the outside of the exhaust manifold) until an intake air temp of approximately 100°F is reached, then a proportion of cold air to maintain that ~100°F intake air temp. This system significantly improves cold-engine driveability and fuel economy, and disabling or discarding it is counterproductive.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

On the 70's pietins it determines when to open the cold air intake snorkel, if functional it will shut the flap allowing warm air off the heat stove/exhaust pipe to warm intake air lowering your 'engine warm up/idle time'. I have a whole pile of 1 barrel tins and a 2 barrel tin that needs replacements (cold air only intake when temps are about 29-37 degrees really waste gas as you sit for 5 minutes at high idle waiting for the needle to quit falling out of the temp gauge on the 'C' side...).

Not really necessary, but to compensate, I'd have to have the choke stay closed for a longer time and this really cuts down on power and mileage both...


-D.Idiot

You may want to see if you can revive any of the sensors by giving a "Pssht!" of carb cleaner spray through all three holes. You can test them by putting them in the fridge til they're cold, applying vacuum to the inlet and seeing if that vacuum is transmitted to the outlet, then heating it with a hairdryer and eventually the vacuum should be bled off to the top "chimney".

I've actually wondered if the GM-style sensors (ATS3 or ATS13, for example) have the two vacuum nipples spaced the same and could therefore be used on the Mopar air cleaner body, but I never remember to measure when I see one at a wrecking yard. The GM sensors have an open-frame design that seems like it would be easier to clean and maybe more sensitive to changes in air temperature...then again, maybe the GM items are more problem-prone. I don't know. As a general rule, these sensors don't often give trouble.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.