AWR-fix: e53 Fuel pump / siphon pump details

[andrewwynn]

Right level should swing from 1.5 to 27L. The key is that the left joins the right at approximately 28.5/1.5/30

It's tragic that some STUPID simple programming would stop a lot of stranded situations.

If left > 29 and right drops to zero flag an immediate pull over fault.

If right > 2 and left < 28, flag low fuel light.

You can not have left > 29 and right < 2 it's impossible when working.

You can't have left lower than 29 unless right is "bottomed out" at flood stage (usually 1.4L)


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[80stech]

Originally Posted by andrewwynn

Right level should swing from 1.5 to 27L. The key is that the left joins the right at approximately 28.5/1.5/30

It's tragic that some STUPID simple programming would stop a lot of stranded situations.

Another good excuse to get an Arduino on-board! This could be monitored along with engine temp and crankcase vacuum.

[andrewwynn]

Originally Posted by 80stech

Another good excuse to get an Arduino on-board! This could be monitored along with engine temp and crankcase vacuum.

Is that the system that uses an Android interface you can program? Yes that would be awesome to program some examples.

I've been saying since I started this thread it's important to drive down to single digits DTE to confirm siphon operation but you can do most of the important monitoring with the test six.

Right side will stay exactly the same from 28 down to zero left tank unless siphon jet has a problem. If the right side drops down to zero when there is 1/4 tank the siphon jet needs repair for example.

If the left side ever reads over 29 when right side is at flood stage (1.4L typical) then the sender is reading high like mine is and you will run out of fuel because the gauge reads plenty of gas.

[g300d]

Originally Posted by andrewwynn

Is that the system that uses an Android interface you can program? Yes that would be awesome to program some examples.

I've been saying since I started this thread it's important to drive down to single digits DTE to confirm siphon operation but you can do most of the important monitoring with the test six.

Right side will stay exactly the same from 28 down to zero left tank unless siphon jet has a problem. If the right side drops down to zero when there is 1/4 tank the siphon jet needs repair for example.

If the left side ever reads over 29 when right side is at flood stage (1.4L typical) then the sender is reading high like mine is and you will run out of fuel because the gauge reads plenty of gas.

I had a similar problem of a high reading float when I was working on this issue. Mine was an improper install bh the tech where the float actually hung up on some hose in the tank.