Dirk Miller

Having spent a number of hours taking out the driver’s side fuel tank on my ’06 ZO6 and installing the fuel sending unit to the tank, I’m sure hoping I had not interfered with the swing of the float. After struggling a bit to hook up the two feed lines inside this tank, I was able to connect these up to the fuel sending unit. I’d think there is only one way to move these around inside the tank to connect both lines, but wouldn’t be a pain to find out these are now interfering in the swing of the float? Before completing the installation of the tank again, is there any way to confirm the float swings properly? When I hold the tank and shake or move around at different angles, I cannot feel or hear the float moving. Maybe there is an electrical test I can do before I put it back in?

Oh and for those who have experienced the cracked 90 degree fitting at the top of the fuel sending unit, you might consider something similar to the application of shoe goo that was put on this new pump

torquetube

Yes!

Measure the resistance across the fuel level sensor pins of the 4-pin connector on top of the pump assembly.

On your 2006 car, the resistance should be approximately 40Ω with the tank right side up (float at extreme low position).

Flip the tank upside-down. The resistance should have increased to approximately 250Ω (float at extreme high position).

If your measurements are the opposite of these, you received a level sensor for a 2007 or later car.

Dirk Miller

Thanks. Will measure today