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04-21-2014, 06:08 PM
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#1 |
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Registered User
 Join Date: Mar 2014
Location: Ogilvie, MN
Posts: 70
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Coolant Temp Sensor??
I am switching over my idiot cluster in my 71 to a cluster with the oil pressure and temp gauge. Can anyone tell me if the sensor that operates the idiot light is the same as the one that works with my gauge or do I need a different one. Anyone know what the part number of the one I need?
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04-21-2014, 06:37 PM
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#2 |
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member #16
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: Coolant Temp Sensor??
The gauge sender is different than the idiot light sensor.
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors  http://www.flickr.com/photos/1745471...7602865984234/ |
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04-21-2014, 06:44 PM
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#3 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Coolant Temp Sensor??
It is not the same. The idiot light uses a switch that turns the light on at a preset temperature. The gauge uses a variable resistance sending unit that gives a ground to your gauge with varying resistance depending on the engine temperature.
The good news is that you can just unscrew the old one and install the new one in the same port. Your part number is ACDelco G1852. Rockauto has them for 14.30 Amazon has it for 16.09 OReilly has it for 22.99 And they're all over eBay for 13-20 dollars.
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I'm on the Instagram- @Gearhead_Kevin |
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04-21-2014, 06:56 PM
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#4 |
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Senior Member
Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,841
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Re: Coolant Temp Sensor??
Is it safe to assume you know you'll also have to do some rewiring when you switch clusters?
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04-21-2014, 09:00 PM
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#5 |
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The Niner
 
Join Date: Nov 2010
Location: Broad Brook, CT
Posts: 2,492
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Re: Coolant Temp Sensor??
I did some research and have heard that there's only 2 types of sensors that are truly accurate... a Delco NOS sensor, and the $10 TU-5 switch from Autozone (Duralast). What I've read is that anything else - even a new Delco unit, gives a false reading.
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"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
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04-21-2014, 11:28 PM
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#6 |
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Registered User
Join Date: Mar 2014
Location: Ogilvie, MN
Posts: 70
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Re: Coolant Temp Sensor??
Thanks for the info. I will do a search here to see what is all involved in switching the clusters. Anybody do this and have a link to some info?
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04-21-2014, 11:47 PM
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#7 | |
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Senior Member
Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,841
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Re: Coolant Temp Sensor??
Quote:
http://gmcpauls.com/Tech%2520Tips1.htm |
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