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Old 01-29-2013, 12:46 AM   #1 (permalink)
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Default Which Temp Sender Unit

With the help of another thread in this forum, I narrowed down the temp sender unit on my 68 302 Edlebrock aluminum intake as the culprit of my "stuck on cold" gauge.

The questions is: Where can I purchase one with the correct fitment for my application?

My concern is that I could end up with a sender that fits but reads incorrectly.
In another thread, I read about the units from autozone gave incorrect readings.

I'm interested in part numbers, manufacturers and local distributers
I live in the West Coast Sacramento-Modesto-Stockton region

Thanks
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Old 01-30-2013, 07:10 PM   #2 (permalink)
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I have posted this many times. You most likely will not find a sender that is
compliant with older cars,so....You get what they sell you, install it and
run the car and see where your gauge goes. MOST of the time the gauge will read too hot. Make sure you know what your temp is by using an IR temp gauge.
Get yourself a 2.7, 3.0, 4.0 and a 5.0 ohm resistor, usually 1/4 to 1/2 watt
will be ok. When your engine is at temp (180-200) put the lowest value resistor
between the sender and the feed wire, and see where your gauge is. Midscale
is what you want, if its not there, go to the next highest resistor. As your
temp gauge will be midscale at normal temp, it will rise if your temp goes up,
as it should. Years ago, the manufacturers used to imprint the temp on the
sender, they dont anymore, so were all left guessing which one is right.
Hope this helps.
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Old 01-30-2013, 11:38 PM   #3 (permalink)
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BWD part # S386.
- Chris
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Old 01-31-2013, 06:46 AM   #4 (permalink)
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I was involved in testing temp senders a couple years ago. They all suck, reading way too high, as described. Find a used or NOS Autolite or Motorcraft. All Ford cars had a temp gauge, so there's plenty of them out there.
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