low on A.C. fluid.you may need to change the system over to 134r refridgent, to recharge the system
yes
I have a 1988 300zx non turbo... and i have a speedometer cable that connects to the transmission as well as the speed sensor that is near the front passenger side of the car.. it is near the vacuum. its a little round thing mounted to the car with 3 wires and a cable coming out of it.
The evaporator is the part on a vehicle with an air-conditioning system which causes the refrigerant liquid under pressure to change to gas.
the alternator is about $80-95. i had to replace mine like 3 times. Its not difficult but very time consuming and cramped space.
Join Zcar.com they have wiring diagrams. Also order Haynes manual about 15 dollars. it has a complete wiring diagram in the back.
If they both have the same engine.
It's possible, in fact here's a 2JZ-GTE in an '88 or so z31, click on the engine link.http://www.az-zbum.com/modification.engine.swap.shtml
it will fit properly if you sawp out the headlights and front bumper from a 87-89
1983-1986 Garrett turbo 1987-1988 ihi turbo
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Yes
This questions has MANY answers! It depends on the horsepower gains you prefer, vehicle use, the amount of money you want to spend. In stock trim a 1984-87 300zx has a T-3 Garrett turbo, while the 1988-89 came with (I think) a T-25 or T-28 turbo. Alot of people in the "Z" community upsize to a hybrid or a T3/T4 turbo. The benefit primarily is it maintains the stock bolt pattern, but more importantly it allows higher boost due to the larger T-4 compression side of the turbo. It has the low rpm spool capability of the T-3 but higher boost aspect of T-4 turbo. Beyond this may require custom manifold fabrication and mounting bracket to except a larger turbo. I have seen Z31 Series 300zx (1984-1989),making close to 500hp on similar T3/T4 upgraded turbo. Call any reputable turbo shop, they should be able to convert you stock turbo to upgrade form.