mudchevy93

ok to start i have a 93 1500 z71. i put a fan clutch in about 6 to 7 months ago and everytime i start it up and try to drive even if its at running temp the fan is engaged and runs like hell and makes alot of noise and lose so much power and giving me shifting troubles and wont turn off until i hit 3rd gear. any suggestions what might be causing it? only started happpening after i changed it cause the old one wouldnt engage at all.