H guys. The new temperature sensor turned up for my Datsun 240Z. Before I throw
this in I just want to verify that its behavior
is the same as the old sensor.
[music]
With this Datsun 240Z, this is my
project car, in the last episode, I'll throw up a card if you're interested in
seeing, I verified that the temperature sender was had failed in my system. I had
my temperature gauge stopped working and I went through the process of
identifying which component required replacement. I was able to get this piece
here which is a single piece temperature sender unit as opposed to the little
pill with a hollow nut that's the factory arrangement I got this from Z Car Depot.
I have a link to their eBay listing for this.
That is a affiliate link which if you use it gives me a little bit of
commission to help support the channel. So this one piece sensor, which looks
much better than the other sensor, before I put that in I'm going to verify its
resistance. That was a comment on one of my last videos too and and rightfully so
just to verify that it's actually going to behave the same as the other sensor,
sender. what I have done luckily is I've actually put that in a water bath and
measured the resistance and do have it's performance curves. So all I'm doing is
sticking this one in in water, raising the temperature, recording its resistance
versus temperature and seeing if it's somewhat behaves the same. I'm not too
fussed if it's not exactly the same. It would be a different kettle of fish if
this was driving a sensor for my Megasquirt computer which requires a higher
level of accuracy. Whereas this is just to gauge and gauge is to gauge whether the
cars hot or cold. It's not a, in this instance it's not a highly accurate
scientific instrument. So I'm lucky enough to still have the original
multimeter I use to test that original sensor so I'm going to reuse this
product just for the sake of accuracy and consistency and I've got a thermal
probe attachment for my much better multimeter which I'll use to measure the
temperature. I do not have the thermometer that i use the first time
around so but these are the two devices I'll use and I'll, um, pinch of an older pot
from the from the collection and jump on the stove.
[music]
Rightio! So testing the temperature versus resistance is done. Um, if I can find a
way how to host it I'll host those values in the spreadsheet I've made
between the old and new but this is what it looks like. Essentially you can see
the behavior is very similar. I didn't get enough information for the lower
temperatures below 10 degrees however I didn't think that was concern
considering the engine will be operating at a higher temperature so rationalizing
that I'm only focusing on the higher end temperatures. But yeah, it's very close to
the old sensor it's a little bit higher in resistance towards the top end.
Um, again another thing is I don't remember whether my gauge, where it's at on the
gauge is actually correct temperature to the engine. So I think I'm happy that the
behaviour is the same but when I put this together and start running the engine
all verified the temperature of the engine versus what's shown on the gauge
and might find out that this new sensor is actually spot-on so. I hope that
sharing this information or at least if you're deciding this contemplating
whether to swap your temperature sender unit or verify that it actually it's
function I hope this is helpful to someone. So yeah, this looks like it's a
good little bit of gear. An update on just this Datsun project. I'm waiting for
the resleeved components to come back. I believe they're close to being done or
have been done. With the front brakes I did put the that put all the stuff down
when away from it and came back and finished it off after my video which on
rebuilding the brake calipers, which I'll throw a link up to, and I've misplaced
one set of dust seals for one piston and the ring somewhere so I need to get
another rebuild kit just for the dust seal. I've pulled this garage apart five
times and I still can't find it. So I must have accidentally thrown it out. But
once that's done right should we put them in
we had a drive it again and I may have a solution for a different optical
distributor not using RB30 which I might've,
I had in one of my previous videos but actually something different so. I hope
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not subscribed. So all that said thank you for watching see in the next vid!