My old fuel pump leaked; Zone of Auto sold me a
Delphi AMF0003. I had to turn the idle up to 1000 (book is 700;
the old idled well at 700 even though it was leaking). I took it
back, ordered the Spectra A1003MP. When it arrived, it was a
Trueguard A1003MP, looked like the Delphi, not like the Spectra.
The Spectra looks like the original and first replacement (1987,
2009). The intake of the Spectra is in the little can on the top;
the return to the tank is in the little can on the top of the
Delphi. The 3 ports are in the same order around it.
https://www.autozone.com/external-engine/fuel-pump/delphi-gasoline-fuel-pump-amf0003/340372_0_0 https://www.autozone.com/external-engine/fuel-pump/spectra-premium-gasoline-fuel-pump-a1003mp/348479_0_0 The docs for the first replacement mention the 4mm thick spacer, which was there; it's also shown in the diagram in Haynes and Chilton (but unmentioned). The docs for the Delphi didn't mention it. I wondered if it was made to be used without the spacer, that adding the spacer would decrease travel, thus pumping, but I thought it would be unsafe to try mounting it without the spacer. I installed new hoses, clamps, and fuel filter. Should they both work as well? Can I get one in the Spectra's shape?