Restoring an 89 For the son.... Oil pressure guage and temp gauge at pegged at top. someone installed an aux. mechanical gauge.
I have a new sender for both the guages - put connecting the temp sender and grounding it out to block doesnt change anything ON THE GUAGE.
I cant find the oil pressure switch. Also the nut hard wired the cooling fan motor (to the ign switch) and I would like to connect it back with the engine tem - is this the coolant sender on the front of the intake manifold?

 

coolant sensor is under passenger side head, you must access it from under the car

 

YES- i FOUND IT - AND PLUGGED IT IN - THE GUAGE IS STILL PEGGED,
the coolant sensor for the fans is on the front of the intake correct?

and with oil pressure sensor/switch is not by the distributor like I am used to....

 

If the gages are pegged high, it indicates that the side of the gage towards the sending unit is grounded before the sending unit

 

THE SENSOR FOR THE GAUGE ITSELF IS UNDER THE DRIVER'S SIDE HEAD. MAYBE YOU SHOULD LOOK INTO A NEW CLUSTER.