I just bought a 89 Sprit with the 2.5 Turbo. I put a head gasket on it and it is running great. I noticed something tonight that struck me as odd. When I shifted from drive to park, after driving for a bit, the oil press light flickered. I tried it three times, did it every time, then could not get it to do it anymore. The pressure guage read a solid second bar during this. Is that light off of the guage or something else. If it were off the sending unit wouldn't the pressure read low?