so i changed the oil in my car stock 88 gxl and replaced the slave cylinder today. Now the car has no oil pressure reading, is this normal after changing oil? Could it be possible i disconnected the sender unit when i changed the slave? Been looking at this chilton manual and keep telling myself the Haynes manual might have been a better buy cause i cant find the sending unit.

 

Probably unplugged the sending unit. It's the large mushroom-shaped thing right below the oil filter. Only 1 wire goes to it and kinda slides on (at least mine does). Make sure it's clean too, or you can get bad readings.

and the Haynes manual is awesome.

 

thanks for the location i'll be checkin in the morning