Stalling

Thanks genphreak I hoped to hear from you since you are in Australia I found an ebay seller in Australia who has a pump listed as a direct replacement for my Pierburg 7.21833.01 pump and I have ordered. Still not working at the moment so money is tight and this one is overnight delivery so I can only hope it is right, even though my old pump ran with power it did so in spurts and didn't sound healthy. Changing wires would not be a problem as I will try anything once but being in Australia and the match for my old pump was the reason so I will report as soon as I get it in. Hope to report good news soon.Just one question how does the mesh filter come off the pump does it screw off or just pull off I don't want to force it and damage it at all.

The filters pull off. Just pull straight down. The Pierburgs are the only ones I've had to replace so far. If replacing one with anything other than a direct replacement, a good idea is to measure the position of the filter from the mounting plate at the top of the tank, that way when you put it in ypou'll be sure the pump won't run out of fuel when the tank is still part full. Pierburgs are much bigger than Bosch and TrePerfs (as wel as the Chinese ones) so its important as they need to be positioned properly.

You should be okay though as yours is a direct replacement assembly by the sounds of it

My idea was to measure from the bottom of the old pump to the mount around it so the new pump should sit at the same height as the old one regardless if it is taller (longer) than the old one. If I set the surround the same point from the bottom of the new pump as the old one it should sit at the same height from the bottom of the tank as the old one, anyway I think I know what I am thinking. I don't know the brand of the new one or where it is made yet but info says fuel filter should be changed if a new pump is installed so at least that wasn't a total waste of money and the mob I got the sensor say the will refund cost since it tested at 750 ohm way out of normal range.

The filter usually comes with the new pump and is different. The old one is normally fine though, with a shake/wipe.

The filter pipe can be a different height so suggest you measure absolute height (from the bottom of the filter to the top of the tank/overall assy.

Got the new pump today and it looked to be exactly the same although it had no markings on it, the only thing was a neat hand engraved number 81 although it looked new. Installed it and all the mountings fit so easy install, the car turned over for a bit then started, I did some short drives so I was close to home if it stopped but no problems at all even after turning off and let sit for a while, started again straight away so went for a longer drive and it runs very well, it looks like it is fixed crazy
Thanks everyone for the advice and help time will tell but all looks good.