Dat Z Sun

hey guys, i just bought a 75z, it runs but like ****, thats not why im posting this, id like to kno whats the sensor on the top of the intake manifold right after the throttle body, mines corroded to ****, thanks

hoov100

It's a sensor that measures a certain set of values. Could you be a little less specific?

NismoPick

There's no "sensor" on top of the manifold right behind the throttle body.

There is a cold start valve though...

Might want to buy a Haynes manual or download the FSM for free from XenonS30

Dat Z Sun

does the cold start valve have a pigtail that looks like an injector pigtail that has 4 wires going into it, 2 on each side?

NismoPick

It's an injector style connector, but only has 2 wires... I don't think there are any sensors that have 4 wires except the AFM ...

Dat Z Sun

heres the pics, you're right about the valve but it has 4 wires to it


is there any way to test it before i go and spend 60 bucks on a motor that ima swap out here in a while?

NismoPick

Notice there are only two prongs... so there should only be two wires. I imagine the two each side are connected as one. Been about 10 years since I've looked at n/a wiring in detail.

Anyway... why not clean it up instead of buying a new one? Dip the tip that goes inside the intake in brake cleaner or lacquer thinner, dip the top connector prongs in LimeAway or CLR. Done.

Dat Z Sun

nice tip, my fuel injector pigtail were corroded as well, but i just snatched some good ones from the junk yard, gotta order a fuel pump and pray soldering new injector pigtails and cleaning the cold start valve do the trick