1988 2.9 XLT Ranger Air Cleaner Temp Sensor

[Boldster]

Hi, I am looking for a new air temp sensor (the one located on the air cleaner, which switch between cool and hot air intakes). I found online several sensors of that type but no one with the same "ID" numbers "123 8B1" or any other information about available aftermarket replacement. Any tip to help me? The sensor is causing a big vacuum leak. I already plug the vacuum tree and remove the hose but will love to replace the part and still with my "strict factory restoration" process...

 

[rusty ol ranger]

I just bought one.

Google "Ford 2.9 intake air temp sensor"

 

[PetroleumJunkie412]

Maybe shoot a photo? IAT sensor is on the plenum...

 

[Boldster]

The part I am looking for is not the IAT. This temp sensor manage vacuum to an actuator which switch between cool and hot air intake to the air cleaner. Here some pictures from Ebay of the same sensors but different codes, which make me think are indicators of open-close temperatures but cannot find the right part ( code 123 8B1 ) or even some info about those temps and codes so I can avoid a possible expensive mistake...

 

[PetroleumJunkie412]

Oh, I have a few used ones of those laying around

 

[franklin2]

The part I am looking for is not the IAT. This temp sensor manage vacuum to an actuator which switch between cool and hot air intake to the air cleaner. Here some pictures from Ebay of the same sensors but different codes, which make me think are indicators of open-close temperatures but cannot find the right part ( code 123 8B1 ) or even some info about those temps and codes so I can avoid a possible expensive mistake...View attachment 42037View attachment 42038

Those are for carbed engines, not fuel injected engines. We assumed you are working on your 1988 in your signature?

 

[PetroleumJunkie412]

88 2.9 has one for the blend door for when it picks up off the manifold shroud.

 

[franklin2]

88 2.9 has one for the blend door for when it picks up off the manifold shroud.

That's weird. my 86 didn't have that. And most fuel injected vehicles run coolant through the throttle body to get rid of icing. Learn something new everyday, thanks.

To the original thread starter; Are you sure you don't have the vacuum lines hooked up backwards to the sensor? When the sensor decides to close the flapper door, it exhausts the vacuum from the vacuum motor so the spring can push it back closed. If you hook the vacuum lines up backwards, it exhausts the main vacuum supply instead.

 

[ericbphoto]

My 93 had all that crap to pull warm air from the exhaust manifold shroud. I tossed the whole system in the trash.

 

[rusty ol ranger]

My 87 dont have it???

 

[franklin2]

I never had problems that I know of on my 86. But apparently they did have problems with the throttle body icing. If it's cold and rainy, say like the low 40's, ice can form around the throttle body. Atmospheric pressure is one side of the butterfly, vacuum on the other. You can get a refrigeration affect. Just like the A/C system compresses the refrigerant, and then it is forced through the orifice valve and then expands in the evap coil for cooling, the same thing can happen crudely in the throttle body area, making it cold and ice forms when there is high humidity outside.

Most factory carbed engines had this hot air system. I had a open aircleaner on my 65 mustang and the throttle would actually stick because of the ice build-up around the butterflies.

 

[Boldster]

Yes my 88 is injection and yes has the temp sensor/actuator on the air cleaner. I am looking online but cannot find which is the part number... lot of Carter and other brands, no trustable information... So far I plug the vacuum tree and will concentrate my efforts in make the engine run smooth...

 

[PetroleumJunkie412]

If in member tonight, I'll pull a part number off one of mine.

 

[Boldster]

If in member tonight, I'll pull a part number off one of mine.

Thank you! I will appreciate that.