Peugeot 406 1.9td 1997 power lacking.

[zokiopp]

I recently bought this car with 140k km on the gauge. I own it for like 4-5 days atm, changed FUEL and AIR fulters and im getting a power lacking but not always lol. 1 time the car is crazy and lets say the next drive the car is still slow. Today i went on a motorway and did a nice hard ride and i felt like the power lacking is gone. THEN the engine shut down , speedometer was dropping , engine stopped, felt like an empty fuel tank but i still had some fuel. i managed to power the engine with gear in and releasing the clutch since i still had alot of momentum and after that i felt so much power in the engine i though it will go 200 km/h lol. Can someone explain what is happening with the engine ? also, it sounds good,works stable, everything is good. I havent drove it since this and i dont know if it will lack again. but the most wierd thing was the engine stopping at 130-140 km/h on the motorway and the power after i managed to re start it .
ALSO , my second problem:
Today i washed the engine with some water and a chemical for oil dispensing and it came out like a new engine on looks BUT after i washed, i started the engine without problems but when i cant shut it down even with removing the key it still goes. I had to use brake and 5th gear to shut it down. This was before i took it to a motorway drive.
Some electrician said that the water got into some electric cable and makes a bad connection. Also, when the car is powered off, the valve in the bosch is still open ( i can hear it when i remove the battery cable and put again it makes a click sound in bosch pump). Electrician reccomended removing the battery and leaving the car this night and check if i can turn off with key tomorrow. i need help on this .
Sorry for my English im from Macedonia .

[PeterN]

I think the non stopping problem is probably due to water, if you can hear the solenoid click when you disconnect the battery there is obviously an alternative power feed route, probably due to the water.

The lack of power sounds like fuel starvation, I would have suggested changing the fuel filter but you have so I would suspect something else is restricting the supply. Could be a blocked vent in the fuel tank, try removing the filler cap when it stops and see if it goes 'whoosh'. If this isn't the problem could be the filter on the fuel pick up pipe in the tank.

Peter

[zokiopp]

I can hear the click when i on/off the battery. ? An electrician friend of mine checked the electronics that shut down the engine (the 4 pin(i think) in front of the bosch pump) , there is still electricity in that jack coming to the bosch pump valve and keeps it open all the time instead to shut down when ignition is off. Should i wait some days till the waters gone or ?

[Doggy]

The lack of power is probably caused by lack of fuel - if possible, open the bonnet when the problem is happening, check if the priming bulb is soft. This indicates the pump is unable to pull fuel from the tank. Look at this post. viewtopic.php?f=1&t=7355&p=73031#p73031

The problem with stopping the engine may well be caused by moisture. The pump is almost certainly ecu controlled, waiting for it to dry out is definitely worth a try.

Let us know how it goes, good luck.

[zokiopp]

im going to try asap . Thank you . I have some more issues but i must take care of this first then i would like to talk about it later.
EDIT: I checked the bulb, its soft. Shuild i open and clean my tank now or put fuel additive and run few miles?
also, almost 24 hours passed from the engine washing, its still the same. wher is the damn moisture? can i do anything about it ?

[zokiopp]

This connector that im holding in my hands is for the engine shutdown. He is the one who still has electricity when the ignition is off(checked the pins with a small lamp).