How do you install 1989 supra Camshaft Position Sensor?

Answer 1

Its in any Mark III Supra repair manual or try Cygnus X1 website.

http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=IG&P=22

It involves turning the crankshaft with a wrench counter clockwise then until you reach 0 degrees and then go another 10 to 40 degrees then reverse the turn back to 0 degrees and stop there. The markings are on the belt pulley and the front plate of the engine slightly to the right of center. The cam position center can be inserted but align the drill hole on the drive wheel with the notch on the sensor housing first. Then insert into the hole in the head aiming to have the hold down bolt to be in the center of the sliding adjustment slot on the sensor.

Tighten down the bolt in the middle of the range and then follow the procedure for engine timing which involves warming up the engine to operating temperature, jumpering T1 to E in the diagnostic block, using a timing strobe light then turning the cam sensor housing to align the mark at 10 degrees. Tighten down the retaining bolt (12mm) then recheck the timing to make sure it hasn't drifted during the tightening. Removing the electrical wire jumper from the diagnostic block should allow the timing to rise above 10 degrees especially when reving the engine.