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did i get the wrong sensor?

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Old Jan 29, 2020 | 02:27 PM
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Question did i get the wrong sensor?

need new gauge sensor for water temp.

I got the Sw2328. is that wrong? I need the sensor mine does not work. I ground the wire and the gauge spikes.

78 F150 351M gauges with oil pressure, fuel, Alt and water temp.
 
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Old Jan 29, 2020 | 02:37 PM
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Did you by chance use teflon tape? The Motorcraft sender already has conductive thread sealant. What's the resistance from center pin to ground?
 
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Old Jan 29, 2020 | 02:48 PM
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Interesting. It checks out as for "with gauge" but it's the only listing of four or five that says it's a "switch" while the others list out as "senders" like you would expect.

I would check the resistance with an ohm-meter with the engine cold and with it up to running temp and see what the variation is. If there is no variation, then it's either defective (not uncommon these days) or the wrong part (also not uncommon) and is just listed with a vague and vaguely incorrect description.
If there is a resistance change, you're looking for an approx. 73 to 10 ohm sweep. With 73 being cold and 10 being full hot.

Good luck.

Paul
 
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Old Jan 29, 2020 | 05:31 PM
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Sorry for the confusion.

the old sender is what I was referring to.
tested the terminal end to ground and the
gauge works the old sensor does not.

No Teflon tape. the new sensor does have
red stuff on the threads and it is a MotorCraft sensor.

have yet to install the new sensor.
I was trying to make sure I got the proper sensor.
all I have read gives mixed answer.
one says temp switch. other ( rock auto) says for gauge.
 
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Old Jan 29, 2020 | 08:54 PM
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Actually RockAuto was the one I referenced which says "switch" too. But it does at least say "switch for gauge" so there's probably no problem.
But you can measure the resistance on the new one and compare it to the old one. You should see roughly 71-74 ohms between the threads and the post.

Paul
 
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Old Jan 30, 2020 | 04:54 AM
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Thank you very much!!!!

greatly appreciated.
 
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Old Feb 19, 2020 | 03:16 PM
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Was that the proper sensor? Am having a hard time finding one with the proper ohm range.
 
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Old Feb 19, 2020 | 06:02 PM
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I will know this Friday for sure. it is getting installed tomorrow and I pick up the truck Friday.
I also got an aftermarket gauge as well. nothing expensive but it should work.
The aftermarket gauge will be installed this weekend if I have time.

https://www.glowshiftdirect.com/blac...erature-gauge/
 
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