Lietuvos BMW Klubas

Sveiki. Meta tokią klaidą. Ką patartumėte?

taj manau yra susije su reikos davikliu,auksto slegio siurbliu bej forsunkem?

Presupply Pump DDE 4.0
The DDE 4.0 features two presupply pumps. One pump is located in the fuel tank while the other presupply pump is located on the vehicle floor in the fuel supply system. Both pumps are switched on and off by means of a relay and deliver the fuel via the fuel filter to the high pressure pump.

The engine continues to run in the event of the in-tank pump failing, however, this is not the case if the in-line pump fails.

Troubleshooting
The relay and relay activation are monitored but not the pumps themselves. Fault code 1250 "Relay presupply pump" is stored in the event of a defect in the relay.

I got that from here http://www.bmw-planet.com/diagrams/r.../E46/index.htm

You need to measure the pre-supplie fuel pressure when the car fails to start.
Also from there :-

Presupply Pressure Sensor DDE 4.0
The presupply pressure sensor registers the absolute pressure (presupply pressure and atmospheric pressure together) in the fuel feed after the fuel filter and serves the purpose of monitoring the fuel supply.

The presupply pressure sensor is integrated in the fuel filter housing. The DDE control unit supplies the sensor with ground (M_KND) and a supply voltage of 5 V (U_KND). The sensor sends a corresponding measurement voltage (EA_KND) to the DDE control unit.

Presupply Pressure Sensor Monitoring
Troubleshooting
Fault code 1255 "Presupply pressure sensor" is stored if the presupply pressure has electrical defect.

Consequences:

•4 bar is output as a substitute value

Presupply Pressure Monitoring
The presupply pressure is monitored during engine start and engine operation by way of setpoint/actual value comparison. Fault code 1260 "Presupply pressure monitoring" is stored if the DDE determines an impermissible deviation in the presupply pressure from the setpoint.

Consequences:

•Depending on the deviation, the injection volume is reduced or the engine turned off or engine start is not possible.

Annoyingly it doesn't say what the pressure is supposed to be!

angliskai ka cia nukopino nieko nesuprantu....
seip problema bus su auksto slegiu siurbliu, ir masyna greiciausiai tau nuo kokiu 3k apsuku net netraukia...
nuvesk tegul patikrina spaudima siurblio jai apie 4bar tai gyvas, jai zymei maziau Kaput jam, spaudimas vis kris , kol galiausiai isvis neuzsivesi.

angliskai laikas ir suprasti. problema bus ne su asks, o su bako ar magistraliniu (greiciausiai abu prie mirties)

kiek turi buti yra tis'e

Nieko ten baisaus abu restauruojami su garantija tas vidurinis po vairuotojo kojom turi but ne maziau 5bar spaudimas o is bako nzn mano mechaniskai buvo sugadine servize tai veze kad restauruotu (pakeistu viena gala nes nulauze stuceri) tai pakeite gala pamatavo 5,4bar regis jei gerai pamenu

tai tipo bako ir po sedine siubliukia?reiks pamatuot slegi...na gal ir jaucias tas netraukimas aukstesnem apsukom,kartajs traukia kartajs nea,beje keliant apsukos letai krenta,o dar ir pastringa pora sekundziu.

Ir kaip sėkesi problemas išspresti?