Help! Fuel level sensor reading

[JSATX]

Someone out there has to have a fuel pump out of the car. I need the empty and full ohm readings of the fuel level sensor wire for my dash display.

 

[RouteAbel]

I can try this tomorrow if no one gets it for you first.

 

[JSATX]

I can try this tomorrow if no one gets it for you first.

Thanks. No big rush. Just need the info in the next week or so. Just don’t want to pull my pump it’s always a mess.

 

[TheNuker]

I have an LNF pump out also, I can check it when I get home

Nuker-

 

[Desert Sasqwatch]

With my TC fuel pump sitting upright on the bench and the fuel level arm rest all the way down, I am reading 248 ohms. With the fuel level arm pulled all the way up to its highest point, I am reading 40 ohms. These readings are going from pin C to pin D. This is being read with a cheapo meter, but it should be close enough.

 

[JSATX]

With my TC fuel pump sitting upright on the bench and the fuel level arm rest all the way down, I am reading 248 ohms. With the fuel level arm pulled all the way up to its highest point, I am reading 40 ohms. These readings are going from pin C to pin D. This is being read with a cheapo meter, but it should be close enough.

Excellent, thanks a lot.
If anyone can confirm with a base model that would be appreciated as well.

 

[RouteAbel]

I can't seem to get a good reading on mine.

 

[Desert Sasqwatch]

Remember, the pin diagram above is for the plug, the jack on the fuel pump will be backwards with pin A on the left and pin D on the right. Make sure you are measuring between pin C and pin D.

 

[JSATX]

I ordered an autometer fuel gauge based on the info from Desert, so hopefully LAP is the same! (It most likely is, 240-30 ohm is pretty much the modern standard as far as I can tell.
Operation Get Rid of Cobalt Instrument Cluster is nearly complete.

 

[Jareth]

Old thread but I’m try to check if my sensor is working?

I took the sensor completely off and using a multi-meter I’m not getting any read other than it sitting at 1, when I move the float I get nothing?

is the sensor completely toast or am I doing something wrong?

 

[Gtstorey]

You might try setting the meter to the lower ohms setting.

 

[Jareth]

Tried every setting in the ohms section, nothing gave a reading other than just 1

.

 

[Gtstorey]

Looked again at your volt meter. Black goes in the common/center and red goes where the black is now. The red hole is for milliampere readings only

 

[Jareth]

Tried what you suggested but no change

I’ll bring it to work tomorrow and have one our electrical engineers check it.

.

 

[Desert Sasqwatch]

Check your meter, measure something with a motor in it like drill or sander. Measure across the AC plug leads, you should get around 10 Ohms - give or take some. If you're still reading 1, there's a problem with your meter.

 

[Jareth]

Huston we have a problem, a problem I guess with my meter? Across plug leads of drill and still reads 1

.

 

[Desert Sasqwatch]

If you touch the red and black leads together does the meter reading go to zero?

 

[Jareth]

Yes, when touched numbers jump around a bit and then goes down zero.

And if I rub the leads across each other the numbers jump up and down.

.

 

[Desert Sasqwatch]

Also check the continuity setting. Turn the knob to the arrow pointing at the sideways T - next to the 200 setting. Touching the leads should give a tone/beep from the meter and it should read close to zero.

 

[Gtstorey]

Huston we have a problem, a problem I guess with my meter? Across plug leads of drill and still reads 1

.
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With the tool switch on.