Identification of parts

[redriddick]

Hi guys,

A quick one for you. Can you identify the components in the attached picture for me?
It is a small board from the back of my dash (fuel gauge) on my tractor which has dual fuel tank. I think the components are busted and need to be replaced.

[R_J]

Re: Identification of parts

They are resistors, the larger one is 1k ohms and the smaller might be 330 ohm I can't make out the color bands, check them with an ohm meter

[redriddick]

Re: Identification of parts

Thanks will try and get a better poc

[redriddick]

Re: Identification of parts

Pics attached

[R_J]

Re: Identification of parts

It could be 3.3kΩ (orange,orange,red). Do you have a multimeter to check the resistance?
After a closer look, that larger resistor looks like a 1kΩ (brown,black,red)

[redriddick]

Re: Identification of parts

Yes I have a multimeter. Do they need to be released from the board to test?

[R_J]

Re: Identification of parts

NO, I looked at the other side of the picture and they don't seem to be connected to anything else

[stj]

Re: Identification of parts

your problem is probably all that shit on the contacts,
try cleaning it up with a wire brush or something - the same goes for the bits that go onto them.

[redriddick]

Re: Identification of parts

Pic of readings attached. First one is the big resistor

[R_J]

Re: Identification of parts

So the lager one is marked 82Ω 5% and measures 85Ω which is ok, the smaller one is marked 330Ω 5% and measure 337 which is also ok
In the first picture I thought it was a 1k but that was incorrect, that gold band looked brown so I read it the wrong way.

So what is the fault with the guage reading?

[budm]

Re: Identification of parts

https://www.badcaps.net/forum/attach...8&d=1562342114
Those female terminals look badly corroded, need good cleaning for sure, probable the same for the Male terminals.
Also check the solder joints on the terminal where the resistors are soldered to.

[redriddick]

Re: Identification of parts

Thanks guys. A good clean up of all joints so. The fault is when I turn in the ignition the gauge goes straight to full. Will clean them up and see

[stj]

Re: Identification of parts

check the sender and it's connections.
some guages work kind of backwards, the meter is biased to full, and the sender brings it down.