New to the family. Many questions. 1983 with Z24 2WD

[MGTS 40]

Well I see that whatever is supposed to toggle the clutch switch is missing. How often should I replace the O2 sensor? Where is the water temp sensor, and where is the temp gauge sensor. I want to make sure those are pugged in. The temp on the dash hasn't been working. Yea secondary is always bigger. I know that much from doing my Land Cruiser carb

[datzenmike 38,374]

Temp gauge sender is just below the thermostat on the intake and has a single Yellow/Black strip wire to it.

 

The temp sensor is listed as being on the intake, which doesn't help much. Look near the gauge sender, it will have a plastic end and a plastic plug in with two wires..

[MGTS 40]

Is this the speed sensor? I can't make sense of how it works

[datzenmike 38,374]

Probably. Does you speedo only go down to 10 MPH? Then most probably.

[MGTS 40]

If it is the speed sensor, what does it affect? How does it work? It doesn't seem to make any sense

[datzenmike 38,374]

The one on my B-210 was to tell the emissions system to reset the BCDD.

[MikeRL411 3,268]

1 hour ago, MGTS said:

Is this the speed sensor? I can't make sense of how it works

 Looks like the odometer.

[datzenmike 38,374]

Yes. The switch closes when the needle drops below 10 MPH.

[MGTS 40]

Finally found it in the manual. It's a 30,000 mile switch. It's an idiot light for the O2 sensor

[datzenmike 38,374]

AHhhh haaa!

[Charlie69 5,964]

4 hours ago, MGTS said:

Is this the speed sensor? I can't make sense of how it works

I removed mine and if I remember correctly there is one I believe for 60,000 mile for something else.

[datzenmike 38,374]

Clean the EGR valve with wire brush.

[MGTS 40]

I haven't found another switch like that.

 

EGR is clean

[MGTS 40]

The driveshaft yoke that goes into the end of my transmission is phuked. Is it possible to get a replacement? I'm not finding anything online. Is there a part number?

[datzenmike 38,374]

The 720 is sold as a complete driveshaft assy for $900. The trans spline and transmission seals are all the same so any spline will work. I could only find the 521, 510, Roadster, 240/260/280z, 610/710 listed. Some like the B-210 are non serviceable U joints and don't come apart. (easily) The Nissan part is 37111-14600 about $70 (I think this is in Canadian $)

 

Best bet is a want ad for a used one...  https://ratsun.net/classifieds/category/9-datsun-parts/  ... 620 should work or 720 if you can find one but not the 4x4.

[Charlie69 5,964]

Check Napa or a good drive shaft shop for a repair sleeve.  Last option would be have a machine shop weld it up and then turn it to spec.  Be like a new one.  Used to do this for my 50 Willys truck it ate front yokes.

[MGTS 40]

I wasn't paying attention, and I can't seem to find it in the book. Does it matter which ignition coil is intake and exhaust?

[datzenmike 38,374]

The engine won't know the difference during normal running. Both coils fire at the same time. Under heavy load the exhaust side coils are turned off to reduce engine noise. The coil high tension wires often get mistakenly swapped. The only reason for turning the exhaust off rather than the intake is because the tach signal is taken off the the intake.

 

The intake is powered directly from one of the fusible links through the ignition switch. The exhaust side is more or less the same but sent through a fuse in the fuse box. Why? Only Nissan knows.