anyone has issues with LS1 fans?
05-12-2010, 04:08 PM
#14
From my experience these fans were junk. Everything was working properly, I had a Blackbear wiring harness with the proper tuning to compensate for the fans. Slow speed trail riding would push my temps to 230, and likewise overheat my transmission, because I only had the cooler in the radiator at the time. They may get you by on the street, but I don't think they have the CFM to keep up with a fullsize truck.
I have since went back to a clutch fan. Save your money and spring for the 05+ fans and larger factory radiator with factory harness. I believe the smaller radiator the 99-05 trucks had is part of the problem as well.
I have since went back to a clutch fan. Save your money and spring for the 05+ fans and larger factory radiator with factory harness. I believe the smaller radiator the 99-05 trucks had is part of the problem as well.
05-12-2010, 04:10 PM
#15
I have a 160 thermostat, and my efan harness is not temp control, its just a switch for hi or low speed, i always have them on hi unless im on the highway, and yes both fans were on and on hi speed everytime i checked them, i would just stop and open the hood with the truck running and temp would start dropping fairly quick,? im confused?
05-12-2010, 04:43 PM
#16
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From my experience these fans were junk. Everything was working properly, I had a Blackbear wiring harness with the proper tuning to compensate for the fans. Slow speed trail riding would push my temps to 230, and likewise overheat my transmission, because I only had the cooler in the radiator at the time. They may get you by on the street, but I don't think they have the CFM to keep up with a fullsize truck.
I have since went back to a clutch fan. Save your money and spring for the 05+ fans and larger factory radiator with factory harness. I believe the smaller radiator the 99-05 trucks had is part of the problem as well.
I have since went back to a clutch fan. Save your money and spring for the 05+ fans and larger factory radiator with factory harness. I believe the smaller radiator the 99-05 trucks had is part of the problem as well.
05-12-2010, 04:56 PM
#18
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I've seen several trucks with plenty of HP run LS1 fans with no problems (including my last truck). I sat in bumper to bumper traffic in southern heat for an hour every afternoon and my temps never got hot. There's something wrong with your setup.
05-12-2010, 07:28 PM
#19
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pretty much thats what im saying..... ive came down to the conclusion that either the fans are giving out or there is something wrong with the relays? but its just weird that the fans do feel like the are blowing high???