It would, if you changed out the trans and the ecm/tcm. The SL2 SC2 transmissions have a different higher reving gear ratio.
My son's 1999 Salvaged/total Saturn SL1 was rebuilt using many engine and body parts from 1995-1999 Saturn SL1 and SL2 cars, I believe it will work fine. I do not recommend before 1995 or 2000 or later models. I do not recommend SL2 either. I am not the expert but most of my son's engine is not 1999 SL1. Good luck!
exact fit fir the sohc engine is 93 or 94 only
yes
no. mine does not have power steering and it's a 1999 sl1
The speed sensor on a 1999 Saturn SL1 is under the transmission. It is below the fittings for the transmission cooler lines.
no
.040
At idle 13-20 psi Key on engine off 23-31 psi
up a mountain
Has the engine coolant temp sensor ever been changed.
bad fan or bad fan relay
Yes, the SL1 is a multi-port fuel injected engine with a single overhead cam.