Temperature sending unit

[idlook2]

I picked up a new sending unit for my 1990 5.7 TBI and noticed that the design appears to have changed. The old sending unit in the driver’s side head had a small button that the wire slid onto. All of the new sending units that I can find have a spade connector. Does anyone know where to find a sending unit with the button?

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[mtl111]

Are any of them you tried made by AC Delco? Try to get an original if possible and they may have changed their design as well. If you can't find an original style, cut off the original connector on the wire and crimp on the appropriate spade terminal to fit the new style.

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[idlook2]

This is the current AC Delco unit for a truck with a gauge. I’m just surprised that the connect would have changed. Anyone else running into this?

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[mtl111]

Unless you can an original NOS AC Delco on Ebay or on some GM dealership shelf they forgot about , thats pretty much going to be your best option.

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[idlook2]

Oddly enough, if you look up sending units for older gm vehicles, they show the round connector:

https://www.summitracing.com/parts/ado-g1852

I have no idea if the resistance is the same, but the connector looks correct. Has anyone replaced this sending unit before? Did you use the spade style and change the wiring or did you use a model for an older vehicle?

 

[umwtnt]

I've changed my sending unit this past weekend. You don't have to change the terminal, it will slide right up on the spade on the new sending unit.

 

[idlook2]

I just noticed that the original connector appears to work with the spade as well. My wire is a little short to reach the end of the spade, did you have to extend yours? Does the new sensor work with your original gauge?

 

[idlook2]

Can anyone confirm that the spade terminal sending unit works with the stock gauge? If so, did you have to extend your wire? I don’t have enough slack to get the wire on the spade.

 

[DerekTheGreat]

I think that changed after '89. But if you go to a bone yard, pretty much any GM with a small block '89 and older will have the style connector you need.
My wife's '92 has the updated weatherpack connector or whatever, didn't think it would fit over the old style.