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03-22-2013, 01:36 PM | #1 |
1970 Daily Driver
Join Date: Jun 2007
Location: Glenns Ferry IDAHO
Posts: 1,038
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1956 Temp Gauge problems
It has always had problems pegging out hot after you drive it for awhile, even though it is not hot. I have double checked it with my heat gun and it runs cool.
I put an all new AutoWire wire kit in so the wiring is new. And I put a brand new temp sensor in the manifold as well as new thermostat. Is there a way to test the gauge? Or anything I may be overlooking?
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It's not truly yours if you didn't build it yourself or if you don't do your own maintenance. |
03-22-2013, 01:52 PM | #2 |
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Join Date: Dec 2012
Location: sparta tennessee
Posts: 345
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Re: 1956 Temp Gauge problems
make sure temp sensor is for a guage not a light Light sensor will do just what you decribe
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03-22-2013, 01:58 PM | #3 |
1970 Daily Driver
Join Date: Jun 2007
Location: Glenns Ferry IDAHO
Posts: 1,038
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Re: 1956 Temp Gauge problems
It was a NAPA Part# TS6469
Part Number: ECH TS6469 Product Line: Echlin Ignition Parts Attributes: # Switch Terminals : 1 Temp Sender Switch Temp Rating : 72-88 Ohms Resistance At 220 Deg F Temperature Switch Thread Size : 1/2" x 14 NPT Warranty:36 Months or 36,000 Miles Whichever Occurs First
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It's not truly yours if you didn't build it yourself or if you don't do your own maintenance. |
03-22-2013, 03:18 PM | #4 |
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Join Date: Nov 2011
Location: Toronto, Ontario
Posts: 222
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Re: 1956 Temp Gauge problems
I had similar problems with mine and bought the right sensor as well. I questioned that for some time, but just last winter when i rewired the truck, I found that my temperature gauge itself was loose. The probes that stick out behind the gauge needed to be tightened down.
Now my gauge works perfectly. |
03-22-2013, 04:25 PM | #5 |
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Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,200
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Re: 1956 Temp Gauge problems
Older engines often had lower resistance range for "hot" than current engines and using 190 T-stat causes high readings. If sensor is correct and resistance matches gauge requirements, it's ok to add a resistor inline to bring the temp range a bit lower.
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03-22-2013, 06:14 PM | #6 | |
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Join Date: May 2010
Location: Lawrenceville, Ga
Posts: 2,648
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Re: 1956 Temp Gauge problems
Quote:
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03-22-2013, 06:20 PM | #7 |
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Join Date: May 2012
Location: Finley, TN.
Posts: 198
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Re: 1956 Temp Gauge problems
Mine is doing the same thing, after i installed a t stat 160. If I reach under dash and remove the closes wire and reinstall it the gage reads correct. I also put brushes in gen and it is worse when the gen is full charging. I can see the greater charge in the temp gage. From what one person said it could be a ground problem.
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03-22-2013, 06:30 PM | #8 | |
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Join Date: Jun 2012
Location: Southern Iowa
Posts: 944
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Re: 1956 Temp Gauge problems
Quote:
Love to hear how you fix it. |
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03-23-2013, 12:01 AM | #9 |
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Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: 1956 Temp Gauge problems
A variable resistor to tune the gauge with a IR gun!!
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03-23-2013, 01:02 AM | #10 | |
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Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,200
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Re: 1956 Temp Gauge problems
I spent a ton of time looking for proper calibration values to check my gauge and get the sender right when I put my truck together in the '90s but I have no idea what reference I used at teh time. I used a DR134A sender which crosses to a NAPA TS6469SB. That sender fits a million vehicles so I searched the net and found this applicable chart:
[quote]Heres some resistance values for three senders 6 dollar TU5 Wells sender from Autozone, 25 dollar "correctly calibrated" Lectric Limited model 01513321, and an original GM 1513321 sender (for a Pontiac Firebird - one with the slide on connector- Camaros use a 1513462 with a screw on lug). 80 degrees: Wells at 650 ohms, LL at 573 ohms, GM at 549 90 degrees: Wells at 526 ohms, LL at 445 ohms, GM at 524 100 degrees: Wells at 429 ohms, LL at 365 ohms, GM at 409 110 degrees: Wells at 328 ohms, LL at 266 ohms, GM at 365 120 degrees: Wells at 283 ohms, LL at 227 ohms, GM at 323 130 degrees: Wells at 250 ohms, LL at 200 ohms, GM at 272 140 degrees: Wells at 216 ohms, LL at 170 ohms, GM at 227 150 degrees: Wells at 198 ohms, LL at 155 ohms, GM at 195 160 degrees: Wells at 173 ohms, LL at 133 ohms, GM at 175 170 degrees: Wells at 157 ohms, LL at 119 ohms, GM at 157 180 degrees: Wells at 135 ohms, LL at 101 ohms, GM at 140 190 degrees: Wells at 120 ohms, LL at 89 ohms, GM at 125 200 degrees: Wells at 109 ohms, LL at 79 ohms, GM at 109 212 degrees: Wells at 104 ohms, LL at 75 ohms, GM at 102 [quote] Quote:
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