quick question on fuel pump sending unit
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
quick question on fuel pump sending unit 93 Camaro w/LS1 swap here, drove the car perfectly fine today and fuel gauge was working properly. When the gauge was at a quarter full (meaning a quarter above half full, pointing northeast), my gauge needle wobbled before shooting all the way up beyond Full. I was just driving normally, cruising along at about 50mph, nothing crazy.
It did not affect the car's drivability in any way.
I did this test on the purple and black wires:
and my multimeter reading didn't read ANYTHING. I double checked to make sure my multimeter was working properly with a few Radio Shack resistors I had, and the multimeter is working just fine.
Is this an indication that my fuel pump sending unit has gone out? The sending unit is from 1993, so it's fairly old.
Thanks in advance for any help/advice.
It did not affect the car's drivability in any way.
I did this test on the purple and black wires:
and my multimeter reading didn't read ANYTHING. I double checked to make sure my multimeter was working properly with a few Radio Shack resistors I had, and the multimeter is working just fine.
Is this an indication that my fuel pump sending unit has gone out? The sending unit is from 1993, so it's fairly old.
Thanks in advance for any help/advice.
No power at all, huh. Did you turn the key to the "ON" position (not RUN) when you set the meter on it? I wonder if the gauge could be having issues too...
Last edited by myk; Jul 4, 2011 at 07:25 AM.
You could have a bad connection in the tank, but more than likely you have a bad sending unit. When the sender goes bad it loses connection & will show an open circuit like you are seeing (causing the gauge to go past full). This can be a random problem at various fuel levels, or it may quit all together.
Thread Starter
Joined: Jun 2005
Posts: 755
Likes: 0
From: Los Angeles, CA (Burbank)
You could have a bad connection in the tank, but more than likely you have a bad sending unit. When the sender goes bad it loses connection & will show an open circuit like you are seeing (causing the gauge to go past full). This can be a random problem at various fuel levels, or it may quit all together.
