Fuel pump fuse keeps blowing on startup.

[davesplace]

My fuel pump fuse keeps blowing on start up, any suggestions?

 

[Mich48041]

Disconnect the + wire from the fuel pump. If the fuse still blows, there is a wiring problem. If the fuse does not blow with the wire disconnected, then replace the fuel pump.
Is there anything else on the same circuit? On the original D-180 system, the avionics cooling fans are on the same fuse as the fuel pump.
Joe Gores

 

[BigJohn]

I seem to recall a change to upsize the fuse in this circuit a while back. Have you gone to the higher value fuse?

 

[Bill_H]

See this thread. It is about the STARTER fuse not the fuel pump fuse though. http://www.vansairforce.com/community/showthread.php?t=84329. The starter fuse should be 3a not 2a.

 

[funflying]

I experienced the samething Bill did with the 2a fuse in the starter. It failed the first time I tried to start the engine. I recalled Bill's story, replaced it with a 3amp and she started right up. No problems with the fuel pump circuit however.

 

[BigJohn]

See this thread. It is about the STARTER fuse not the fuel pump fuse though. http://www.vansairforce.com/community/showthread.php?t=84329. The starter fuse should be 3a not 2a.

I stand corrected. That was the starter circuit. Sorry.