In 2005, when electric fans were introduced in GM trucks, both manual and automatic A/C controls communicated with the PCM using the Class 2 data stream, a signal not available … A couple of decades ago, it was popular to simply add a switch under the dash to control an electric cooling fan, often referred to as an auxiliary fan. The 16" fan is at the stock setting 190 on and 180 off. I assume the water temps would have still been higher with the original thermostat (assuming the same fan settings). 5th Generation Chevrolet Camaro 2010 - 2015. I also show how I tested my cooling fan switches. Switches the fan on at about 90 or 91 deg C and … >ENGINE COOLING FAN HIGH SPEED This topic contains 2 replies, has 3 voices, and was last updated by  dave 5 years, 6 months ago. i Had my tuned by frost to 160 thermo but how do you change the fan temps? You have probably sorted this by now but in case you had wiring wrong the fan switch wires from the ecu switch to earth internally in the ecu so you wont get a relay signal. What temp range should I use?? I realize alot of books refer to the stock LS1 thermostat as 180 but this is incorrect from my experiences. approximately four minutes, this is known as Low Fan Run On. An A/C request is indicated (YES) and the vehicle speed is greater than 50 km/h and A/C pressure is less Works great with the Spal Pulse-Width Fan Controller. It gets its input from the Coolant Temp Sensor, located on the Drivers Side of the engine, right where the upper radiator hose goes to the motor. Condition: ... GEN3 V8 LS1 5.7L . I have a thermo fan in my Lc and am up to the stage of fitting a thermo fan temp switch to my 280hp 202. Item information. Using the fan schematic on my website, you can look at various points in the fan relay control circuits (blue and green wires from the PCM to the relays) for a ground when the fans are supposed to be on. The LS1 PCM has 2 fan outputs and I used fan #1 to control the electric water pump and fan #2 controls the 16" fan. The stock LS1 fan setting is 190 on and 180 off. Have a 96' 4.3. put a e fan on and the only spot i could find to put the thermo switch in was the pass side head. fan comes on at 100 and the lag of coolant allows the engine to spike at about 104. i set mine at 97 on … The Nelson harness and LS1 fans (00' Camaro in my case) is a great setup, but I'm going to add a flex-a-lite #108 (pusher) to help things out. The t-stat is 180 degree btw. The connectors provided with the kit fit the popular General Motors LT1/LS1 dual fan … Thinking of putting Oil Temp & Trans Temp gauges. The A/C refrigerant pressure is greater than 2400 kPa. This video shows how an normally-open cooling fan switch works. I bought a dual pass aluminum radiator that came with a single 1 speed fan. If the low speed fan was OFF when the criteria was met to turn the high speed fan ON, the high speed fan will cooling fan high speed relay fan if the engine cooling fan low speed relay has been “ON” for two seconds This was a mediocre way of doing things, primarily because the current required to spin the fan was drawn through the switch itself. hey people having a small issue with my thermo fans ive wired my fan relay in correct for my ls conversion but when i run the car i cant get the thermos to kick on and im geting no relay signal from the pcm what temperature are ls1 thermos meant to come on at. And I dunno where I pulled the electric water pump thing from. Under load and at higher engine speeds such as climbing a grade on the freeway, the cooling system may reach 190 degrees. - 1500 kPa or coolant temp more than 108 C 400W and 430W Off - 1170 kPa or coolant temp less than 104 C Fan Motors Used Large / Small Fan Stage 2 On Gen 3, V8 only. LS1 VN + WK Grange 0010 + HPW VX SS ... although there is a fuction setup in the 808 delco's for a second temp to kick a fan into high speed, the 808 is only wired for one output (for thermo fan) in the VN-VR. The engine coolant temperature is less than 102°C. Details about Radiator Thermo Fan Temp CURRENT POWER Controller Switch 12V RELAY THERMOSTAT. G/day wjr2980 I'm running a 1985 KC LASER Thermo switch in my 202. The PCM will only turn ON’ the engine An A/C request is not indicated (NO) and the coolant temperature is less than 95°C. As it dropped from 180 to 160° there was a significant difference. so unfortuntly it's a one speed setup only. Just trying to keep my advance up a tad higher during the summer months. Any suggestions please. Radiator Thermo Fan Temp CURRENT POWER Controller Switch 12V RELAY THERMOSTAT.   For Ford … The cooling fan low speed relay will be turned ON when: 06 M6 SRM Ill go out to start my car in the morning and id say after 5 mins, the temp needle slowly rises past normal trigerring the fan to turn on. All cooling fans will be turned off in the vehicle speed is greater than 104 kph. In stop and go driving I'm having to use the A/C to "force" both fans to 100% to help bring the temp back down. If you put a cooler thermo in then the engine can potentially cool down to the lower opening point. This easy to use cooling fan relay kit includes a labeled wiring harness, 40 amp relay, fuse holder and coolant sensor. At what temp they should turn on, Had new air-con done over the weekend the guy noticed that the thermo low speed weren't coming on with the air-con as they should. The coolant temperature sensor is designed to respond to changes in engine coolant temperature. If an engine coolant temperature sensor fault is detected and a DTC such as DTC P0177, P0188, P01114 1985-1996 Corvette Low Temp Cooling Fan Control Switch would be installed in this location (driver’s side cylinder head between cylinders 1 and 3). A/C request not indicated (NO). What is the thread type used on Holden 308's? Item information ... Silicone Radiator Hose Kit for Holden Commodore VY Ute V8 5.7L LS1 2002 03 04 AU 99.00 AUD . What should I set each fan at.   Sales and Group Purchases from our Great Sponsors! Available with 185° on/165° off or 195° on/175° off. The sensor is crucial in the control of temperature based functions performed by the ECU (eg spark and fuel timing, instrumentation, etc). or P01115 is set. I just got done with a 4.3 to 5.3 engine swap and with all of that, installed ls1 e-fan with a nelson e-fan harness and tune. 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