I've performed an 83 turbo swap into my 75 280z. The car is running great, however, I now need to go through the various sensors and bugs to get everything 100%. I've done the searching and can't find a definitive answer.
1st question: I swapped the oil pressure sensor from the 75 block to the 83 block in the car and hooked up the stock 75 harness oil pressure wire to the nipple on the sensor (teehee... nipple...), but still don't get any pressure reading. Is this the correct way of doing this? The pressure sensor seemed like it was on it's way out any way, but I just wanted to verify I'm doing it correctly before splashing out more bucks.
2nd question: the water temperature sensor still needs to be hooked up. All I have down there is the stock harness with the wires for the water temperature and the stock 83 water temperature sensor attached to the block (or hose.. I don't have the car in front of me right now). Is it merely just a plug and play affair?
3rd question: And this is probably a stupid one. I've got the heater core hoses all hooked up correctly, but there's this other hose coming out of the firewall just above the heater core hoses and I have no idea where it goes. I can't seem to find anything in the FSM about it. I'm assuming it has something to do with the coolant system because when the engine had been running for a bit, coolant started to pour out of it (I'm assuming it's got something to do with the thermostat opening up)
Does this need to T into one of the other hoses?
4th Question:
The Relay that was hidden inside the passanger side fender well on the 83. I'm not entirely sure what it's called, but it has something to do with getting charge/signal to the fuel pump relay. Now because of this relay, my fuel pump works intermitently. Sometimes the fuel pump relay will just repeatively click, sometimes randomly, sometimes not at all, and sometimes flawlessly. It's not the fuel pump relay, it's this other relay causing this. I replaced it with other relays that I knew were working. I tried heating it with the heat gun (it was cold outside) and viola! It works! What could be causing this to happen? And how would one go about fixing it?
Thanks in advance! This site has proved invaluable to getting me this far on the swap. Looking forward to posting some pictures and vids!