Electric fan sensor location? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smokie · 05-14-2016, 06:41 PM

Currently I'm using single speed dual fans with a 180 sensor and a 180 thermostat. My sensor is in the intake and my electric temp gauge is in the driver head. I keep getting spikes up to 210-215. Is this normal or should I put the sensor in the passenger/driver head?

*gmachinz* · 05-21-2016, 11:55 PM

Seems about normal. I assume your fans don't come on until 180? Keep in mind the temp difference between the intake coolant passage and at the cylinder head is about 20-25 degree difference so the readings you are seeing isn't too far off. Gauge sensors located in the cylinder head will always make the engine "appear" to be running hotter than expected.

Andy4639 · 05-22-2016, 06:50 AM

The gauges are always good to have but I wouldn't have a LS swap without my scan gauge 2. It reads what the PCM is reading so I go by those over my gauges in the dash.

These are just random pictures of mine. You can set it up to read just about anything the PCM can.
You plug it into the ALDL on the PCM and they are $120.00 at auto zone.You can clear codes and it tells you what codes are.

05-14-2016, 06:41 PM	#1
smokie Registered User Join Date: Feb 2015 Location: Nanticoke, MD Posts: 35	Electric fan sensor location? Currently I'm using single speed dual fans with a 180 sensor and a 180 thermostat. My sensor is in the intake and my electric temp gauge is in the driver head. I keep getting spikes up to 210-215. Is this normal or should I put the sensor in the passenger/driver head?

05-21-2016, 11:55 PM	#2
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: Electric fan sensor location? Seems about normal. I assume your fans don't come on until 180? Keep in mind the temp difference between the intake coolant passage and at the cylinder head is about 20-25 degree difference so the readings you are seeing isn't too far off. Gauge sensors located in the cylinder head will always make the engine "appear" to be running hotter than expected.

05-22-2016, 06:50 AM	#3
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Electric fan sensor location? The gauges are always good to have but I wouldn't have a LS swap without my scan gauge 2. It reads what the PCM is reading so I go by those over my gauges in the dash. These are just random pictures of mine. You can set it up to read just about anything the PCM can. You plug it into the ALDL on the PCM and they are $120.00 at auto zone.You can clear codes and it tells you what codes are. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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