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Temp Sender question

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Old Jul 25, 2009 | 04:09 PM
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Default Temp Sender question

Alright... took the car out for a 70 mile round trip drive... fairly consistent on the temp gauge at about 220 or even just a bit less with clean air while driving 2 lane country roads at 55-75 MPH... a couple of stops with the IR gun showed fairly consistent 180ish on the hose to the rad... 30+ degree drop across the rad... so...

Convinced the sender is the culprit... would a temp sender out of a 1966 Impala possibly be accurate for my 62?

Thanks
Scott
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Old Jul 25, 2009 | 04:34 PM
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Originally Posted by Oriondriver
Convinced the sender is the culprit... would a temp sender out of a 1966 Impala possibly be accurate for my 62?

Thanks
Scott
Possibly. If it is accurate in an Impala, it should be accurate for your car, assuming the Impala does't have idiot lights.

The sender in my 65 vette, was pulled from my 71 Oldsmobile Vista Cruiser when I converted that car from Rally Pac gauges, to aftermarket AutoMeter gauges.
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Old Jul 25, 2009 | 04:49 PM
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I don't know the number, but remember one time someone telling me the best one to use is an original from a 55-57 chev. Not a replacement, but the actual one. The one I have used in my '62 since I got it in '72 actually reads on the low side, but I just got used to the reading. I have an extra sender in one of the heads and hook it up to a test gauge I have. I just corrolate the difference so I know where 180 degrees is one the one in the car. Maybe not the best, but it works for me
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Old Jul 25, 2009 | 05:08 PM
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Just get one new from DeWitt's. The replacement they sell is calibrated as the original, so the gauge will read correctly. As you know, the vast majority of replacements will cause the gauge to read approximtely 30 degrees too high.
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Old Jul 25, 2009 | 05:10 PM
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Originally Posted by SupremeDeluxe
Just get one new from DeWitt's. The replacement they sell is calibrated as the original, so the gauge will read correctly.
My personal experience with a DeWitt's sender was it was about 40 degrees too low at operating temps.
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Old Jul 25, 2009 | 05:48 PM
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If you can find a good used sender this is the way to go. The old delco unit was the same on most older passenger cars, trucks and so on.

There are NO correct new sending units! Even my own calibration chart that I’ve used for years and have posted on my web site is wrong and has been pulled down!

I’ve purchased senders from Lectric Limited, Wells tu-5, Standard ts-6, Delco (number listed above), Airtex, Niehoff and so on. . . .just about every brand you can imagine and I tested them extensively. I doubt seriously you’ll be lucky enough to find one that works. If you find a good used sender, it will work! Maybe you'll get lucky and find one of the old NOS 1513321 Delco Senders. They worked fine until GM changed the number.

There are two real good threads on this and I'm pretty sure Jeff was involved with them too! But here are the links:

http://forums.corvetteforum.com/c1-a...t-problem.html

http://forums.corvetteforum.com/c1-a...ding-unit.html

Willcox
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