Dorman 902-310 Radiator Fan Relay Kit HZ setting - The 1947 - Present Chevrolet & GMC Truck Message Board Network

87chevy.com · 01-28-2020, 07:57 PM

Connected the fan relay kit to a set of stock ls1 Camaro fan. when the PWM wire is connected, the fan motor makes an unusual noise, like an electrical signal noise, but no moment. I'm sure its a HZ hertz setting. if i ground the signal wire, it goes full speed. So it seems the relay is operating properly, just not the signal no jiving.

stock L83 is 100hz . Instead of trying a bunch of ranges, I figured i should post up and ask the mass'.

Thanks
Clint

87chevy.com · 02-01-2020, 11:29 PM

I'm thinking this thing is just a dud, when grounding the signal wire, it was not full speed as i thought. its maybe 1/2 speed by the sound of the roaring noise of the fan noise. May warranty this unit, at this point I'm not sure

I did set the ecu to gen5 ecu fan setting to pwm_electric and 128hz per notes in hptuners and nada. noted that when turning on fan relay 1, it activated it. but it activated it at the original observed speed, 1/2-ish.
clint

01-28-2020, 07:57 PM	#1
87chevy.com BMW & ASE Master Certified Join Date: Feb 2004 Location: Houston, Texas Posts: 1,266	Dorman 902-310 Radiator Fan Relay Kit HZ setting Connected the fan relay kit to a set of stock ls1 Camaro fan. when the PWM wire is connected, the fan motor makes an unusual noise, like an electrical signal noise, but no moment. I'm sure its a HZ hertz setting. if i ground the signal wire, it goes full speed. So it seems the relay is operating properly, just not the signal no jiving. stock L83 is 100hz . Instead of trying a bunch of ranges, I figured i should post up and ask the mass'. Thanks Clint __________________ 1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress

02-01-2020, 11:29 PM	#2
87chevy.com BMW & ASE Master Certified Join Date: Feb 2004 Location: Houston, Texas Posts: 1,266	Re: Dorman 902-310 Radiator Fan Relay Kit HZ setting I'm thinking this thing is just a dud, when grounding the signal wire, it was not full speed as i thought. its maybe 1/2 speed by the sound of the roaring noise of the fan noise. May warranty this unit, at this point I'm not sure I did set the ecu to gen5 ecu fan setting to pwm_electric and 128hz per notes in hptuners and nada. noted that when turning on fan relay 1, it activated it. but it activated it at the original observed speed, 1/2-ish. clint __________________ 1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress



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