fuel sending unit broken??
#1
Audiworld Junior Member
Thread Starter
Join Date: May 2010
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
fuel sending unit broken??
hello forum. i am driving a 1992 audi 80 1.6 gas.
i am trying to build a custom diagnostics tool, and i am stuck at the fuel level sensor... (i do not have a speedometer, or any fuel gauge)
the fuel pump/sender is reached, by a small hole, in the trunck. there you can see , a connector that is like this :
where the connectors 1,4 are the ones for the fuel pump.
so i suppose the 3,2 are for the fuel sending unit?? the thing is, that when i connect the DMM on those two connectors, i dont read any resistance at all... is the fuel sender broken? or am i doing something wrong??
i am trying to build a custom diagnostics tool, and i am stuck at the fuel level sensor... (i do not have a speedometer, or any fuel gauge)
the fuel pump/sender is reached, by a small hole, in the trunck. there you can see , a connector that is like this :
where the connectors 1,4 are the ones for the fuel pump.
so i suppose the 3,2 are for the fuel sending unit?? the thing is, that when i connect the DMM on those two connectors, i dont read any resistance at all... is the fuel sender broken? or am i doing something wrong??
#2
AudiWorld Member
Join Date: Apr 2005
Location: Tucson, AZ
Posts: 442
Likes: 0
Received 0 Likes
on
0 Posts
That is the connector that goes into the chassis wiring. Two of the wires feed voltage to the fuel pump. The other two lead back to the instrument cluster.
You need to measure the other side of the connector (at the top of the fuel tank) to check for the fuel level sender resistance.
You need to measure the other side of the connector (at the top of the fuel tank) to check for the fuel level sender resistance.
#3
I'd bet big money that it is your Fuel sending unit that has a broken wire, like this:
<img src="http://i1030.photobucket.com/albums/y363/Hybrid_hatch/Instructional/IMG_2802.jpg">
You can see on the right hand side of the photo there is a wire, it should be connected to the frayed wire on the sending unit float. It is a VERY common failure.
<img src="http://i1030.photobucket.com/albums/y363/Hybrid_hatch/Instructional/IMG_2802.jpg">
You can see on the right hand side of the photo there is a wire, it should be connected to the frayed wire on the sending unit float. It is a VERY common failure.
#4
Audiworld Junior Member
Thread Starter
Join Date: May 2010
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
MIKE: ofc i was talking about the side that is on the fuel pump, and not the disconected plug...
Hybrid: that is what i am thinking... so i think i will go and have it removed, to be sure!!
Hybrid: that is what i am thinking... so i think i will go and have it removed, to be sure!!
Trending Topics
#10
Happy i could help, I think there are a LOT of us who have had the same problem. Glad to see you get your car working better and keeping it on the road!