mndriver
curmudgeon extraordinare
Had issues last year with the fuel pump failing on my APU. I replaced it with a Mr Gasket 12D from Parts City locally.
In February this year, it failed again, but this time in Colorado so I replaced it with another one from O'Reilly's.
And in July it failed again. ????WTH????
Last week I tried to run the APU for the A/C and it would stall out.
Tested the system, it had the bad fuel pump again. OK, call the parts guy, ask for a new/different pump. He got me one in. No issues.
installed new pump.
engine still stalls out.
Replaced the fuel filter.
Still stalls out.
WTH.
So I sat down last night with a cigar, cream soda with rum and watched the dog run around the yard while staring at the truck for a couple hours.
decided I was going to pull out the fuel pickup tube and see if there's a screen or something that's on the end and plugged up.
This morning I went and looked at the installation manual. Doesn't show a pick up screen, just 2" off the bottom and open tip.
So instead of taking it all apart and looking, I just pulled the fuel line off the inlet side of the pump and blew air back into the tank for about a minute.
Put it all back together, started the A/C and.....
It runs fine now.
I suspect that a piece of debris or something got into the pickup and it was causing the pumps to work so hard, it burned them out. It was also causing a starvation issue with the engine under heavy load.
In February this year, it failed again, but this time in Colorado so I replaced it with another one from O'Reilly's.
And in July it failed again. ????WTH????
Last week I tried to run the APU for the A/C and it would stall out.
Tested the system, it had the bad fuel pump again. OK, call the parts guy, ask for a new/different pump. He got me one in. No issues.
installed new pump.
engine still stalls out.
Replaced the fuel filter.
Still stalls out.
WTH.
So I sat down last night with a cigar, cream soda with rum and watched the dog run around the yard while staring at the truck for a couple hours.
decided I was going to pull out the fuel pickup tube and see if there's a screen or something that's on the end and plugged up.
This morning I went and looked at the installation manual. Doesn't show a pick up screen, just 2" off the bottom and open tip.
So instead of taking it all apart and looking, I just pulled the fuel line off the inlet side of the pump and blew air back into the tank for about a minute.
Put it all back together, started the A/C and.....
It runs fine now.
I suspect that a piece of debris or something got into the pickup and it was causing the pumps to work so hard, it burned them out. It was also causing a starvation issue with the engine under heavy load.