1983 civic, or 1999? which is it? wrong car too? 4runner?
even wrong makers, its a toyota not a HONDA. wow.
sure it quite, its amazing it worked at all this old.
bouncing up and down for 31 years?
no matter. what car it is,
the FSM cover this and gets asked 10,000 times here. dispite the posts or the FSM coverage.
ok , there are 2 designs, for this.
direct drive (100 years running)
and PCM /BCM in the middle , (modern days) the PUTER does this.
can vary by engine option (unstated)
- 1FZ-FE, 2RZ-FE, 3RZ-FE and 5VZ-FE engines:
- 2UZ-FE engine:
- they even have DIESEL !!
this car (FSM) is like 1/2 and 1/2
it has a DASH combo meter, (CLUsTER brain,)
the cluster is a computer.
the gauge is part of it and key point the sender goes
direct to the cluster brain unlike newer cars.
so on this car, we pray it not the CLUSTER bad
and immediatly test the sender
we attached any ohmmeter (even a $10 walfart meter)
to the sensor wires, key off, and disconnected.
we do this on all cars. ever made.
my online sources has zero sender spec data.
but most of them are 25 to 100 ohms, full; to empty
and never infinity. ohms. (resistance mode of any meter)
if luckly the sender wire is cut or connector rusty.
or sender is bad.
the dash guage tests are in the FSM>
the part is here, ID #21
test it, easy , with any ohmeter set to 200 ohm range.
Rx200 ,
if you know how full tank is (dip stick it)
you can know the ohms (about)
https://www.trademotion.com/parts/2000/Toyota/4Runner/Limited?siteid=214915&vehicleid=84046&diagram=8414515&diagramCallOut=21
wild guess, 3
2.7L gas.
i see no after market senders, at rockauto.com, not good.
but my first google search lands here
http://www.toyota-4runner.org/3rd-gen-t4rs/113618-fuel-sending-unit-testing-conflicting-info.html
working on cars FSM free.(blind)
is hard, and the new cars, IMPOSSIBLE.
why not just buy the book
then read all TSBs on your car.
then fix, it 10x faster.