Author Topic: Water Temperature Sending Unit  (Read 1247 times)

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Offline Vince

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Water Temperature Sending Unit
« on: March 06, 2013, 08:17:06 PM »
My temperature guage is not working properly and it appears the sending unit is where the issue is.
My question is why is it so expensive? Any other unit is 10 - 25 bucks. I am finding the cheapest price online is 46 bucks. Is there something special about the unit. Can I use something else?
Sorry I am such a cheap skate. But hey every buck counts.
Thanks
Living in The Great Northwest
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Offline eaglefreek

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Re: Water Temperature Sending Unit
« Reply #1 on: March 06, 2013, 08:20:33 PM »
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Offline JayRamb

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Re: Water Temperature Sending Unit
« Reply #2 on: March 06, 2013, 09:40:25 PM »
My temperature gauge runs cool. I don't know if it is the gauge itself or if it is the sending unit. I don't want to take the dash apart for I don't really think it is the gauge. Maybe the Sending Unit?!
Jayson H.
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Offline Vince

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Re: Water Temperature Sending Unit
« Reply #3 on: March 06, 2013, 09:46:45 PM »
My 83 SX/4 has the two wire sending unit. How would I rewire for the gauge style sending unit.
Living in The Great Northwest
2011 SS Camaro Convertible
2008 Chrysler 300 C Hemi
2005 Dodge Ram Diesel 1 Ton Shortbed
1997 TJ Wrangler Sport
1983 Eagle SX/4 (The Beagle)
Can you say too much is never enough

Offline Amc1320

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Re: Water Temperature Sending Unit
« Reply #4 on: March 06, 2013, 10:07:39 PM »
I have had dozens of AMC's never had one that showed the temp much above the "C" on the gauge

I think that's the normal range for these cars, if it gets to half way up I would know I had a problem

Rob
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Offline eaglefreek

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Re: Water Temperature Sending Unit
« Reply #5 on: March 06, 2013, 10:26:20 PM »
My 83 SX/4 has the two wire sending unit. How would I rewire for the gauge style sending unit.

You sure? The one for the gauge is located in the back of the cylinder head. Where the red circle is on this photo I snagged from the net. The two wire one is in the intake manifold and has nothing to do with the gauge.
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Offline vangremlin

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Re: Water Temperature Sending Unit
« Reply #6 on: March 06, 2013, 10:38:34 PM »
My temperature gauge runs cool. I don't know if it is the gauge itself or if it is the sending unit. I don't want to take the dash apart for I don't really think it is the gauge. Maybe the Sending Unit?!

Like Amc1320 said, my runs cool also, barely above the C.  You can test the gauge by grounding the sending unit wire, the needle should go all the way to top if you do that.
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Offline JayRamb

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Re: Water Temperature Sending Unit
« Reply #7 on: March 06, 2013, 10:49:17 PM »
From my understanding the Temperature Sending Unit with the two wires on the manifold...registers with the computer then to the gauge as well. Am I wrong with this one?
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam


1987 Garnet Red Eagle: 64,500 miles
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 136K miles
1967 Rambler Rebel 4 Door 290 V8 parts car in Marina Aqua
2009 Nissan Murano SL

Offline carnuck

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Re: Water Temperature Sending Unit
« Reply #8 on: March 06, 2013, 11:26:23 PM »
There is a resistor wire between the sender and the harness. I took mine out and got a more accurate reading
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Offline eaglefreek

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Re: Water Temperature Sending Unit
« Reply #9 on: March 07, 2013, 07:46:31 AM »
Am I wrong with this one?
If you have a 258, yes you are mistaken. I removed the 2 wire one in the manifold along with the computer and my gauge works fine
 If you have a 4 cyl. I have no idea.
"I know he'd be a poorer man if he never saw an eagle fly,
Rocky mountain high"  John Denver
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