2001 ford focus stalls andloss of power when i come to a stop

This says at was caused by the fuel tank and was subject to a recall.

https://www.caranddriver.com/news/a24218133/ford-focus-recall-stalling/

As you say, a well known issue

https://www.google.com/search?q=2014+Ford+Focus+stalls+in+the+rain

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change the fuel pump relay very common to fail. solder cracks due to heat .

possible pump but could be a problem pressure regulator
good pressure is 45-65 psi

Check TPS sensor[RPM]and IAC sensor.

i have ford focus ghia 2.0 2002 model and i have problem with the fuel pump sometimes it works sometimes it doesn't.. when i fill the tank petrol pores out, the pipe next to the filter also comes out, how do i fix the problem?

you need a new fuel pump. There was a program to pay for this for 10 years I think for some 2000-01 Foucs. Here's what the letter from Ford says: December 2003 Program 03N01 "Attached is a letter announcing the details of a no-charge program Ford Motor Company will be conducting concerning your vehicle's fuel pump. We have found some 2000-01 Ford Focus vehicles may experience symptoms of engine hesitation, loss of power, surging and other similar symptoms ...... as a rsult of progressive contamination of the fuel pump filters." (in the fuel pump). You may reduce the liklihood of the symptoms occurring by kee[ing the tank at least half full. My recollection is the program was good for 10 years. Ask your local Ford Dealer if your car is eligible for this program.

i reccommend you get a new battery, cleaning up the corrosion does nothing, the corrosion is a sign of acid leaking from the battery

The "speed sensor" is throwing way too much fuel through the injectors and flooding the cylinders, new spark plugs would burn longer, but still die after a while, so that makes sense... but I think the problem might go a bit deeper into the engine management system than that. You say it does this at a specific temperature, so a loose connection somewhere is possible inside the EMS, something that breaks a sensor connection at that temperature, due to expansion and contraction of metal parts. Try looking for evidence of that.

change the module

I have a 2000 ford focus and there was a recall for a defective fuel pump. THe dealership replaced it for free. You should check Ford recalls for this problem.