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Thread: astra 1700dti non starting 2002 model.Help Please !!!

  
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    astra 1700dti non starting 2002 model.Help Please !!!

    I appear to be one of the unlucky many who have this problem but has anybody actually found a solution?.
    I have spent endless hours without success to get my car running.
    Up to now i have replaced the diesel edu,engine ecu,fuel pump & timing belt.I have also checked most of the wiring in the engine compartment.

    I have renewed the fuel filter.
    The problem seems to be that there is no diesel to any of the injectors,
    If i remove the return fuel hose to tank & crank there is a good on the return.
    There are no fault codes in the system.
    Has anybody actually found a solution for this major headache ?.
    All suggestions appreciated Or do i just scrap it !!!

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    Quote Originally Posted by mikesworkshop View Post
    The problem seems to be that there is no diesel to any of the injectors,
    If i remove the return fuel hose to tank & crank there is a good on the return.
    Hi Mike,

    Sorry to hear about your troubles - sounds like you have done everything you can and must be close so surely you don't need to scrap it. If nothing else bring it in to a specialist and just pay the bucks to get it sorted.

    I was confused by what you said above - are you saying there is no fuel to the injectors yet there is diesel flow in the return fuel hose? Doesn't that mean there is fuel passing by the injectors or have I got that wrong?

    Cheers, Paul

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    I would consider the crank sensor, check the wiring to it and if it is good think about replacing it around £25. You can test it by disconnecting it and useing an ohm meter between pin 1 & 2 which should read 800-1000 ohm, pins 1 & 3 and 2 & 3 shoud read infinity i.e. go off the scale. Then test for a signal by connecting a LED to pin 1 & 2 whilst cranking the engine it should flash. A fault code reader should detrmine if the crank sensor is u/s. If you are not getting a signal from the crank sensor you will not start it becuase the ECU will think the engine is stationary so no fueling.

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    Hi Paul,thanks for your reply.There is no fuel to the injectors as i have the unions undone but if i remove the return pipe to tank & crank the engine there is a good flow.The engine fires straight up if i spray easystart into intake.

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    Hi,thanks for your help.I did think of the crank sensor,when i carried out diagnostic test i looked at live readings for the sensor.On cranking it showed about 280 rpm.I really dont know what to try next....starts fine using easystart !!

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    When you say it starts with easy start do you mean it keeps running?

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    What i suggest you do is check the fuel pipe to the filter housing as it may have chaffed against the brake servo vacuum pipe and made a pin ***** hole in the pipe.

    To check you can also blow air into the fuel tank and check the pipes at the front for any leaks.

    Other than that id suggest you put the car on tech 2 and check data display for engine speed. If its zero then you need a crank sensor.

    The immobiliser light doesnt flash when the ignition is on does it???

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    Sorry just seen you have engine speed.

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    If the engine keeps running after using easystart I would be more inclined to suspect the crank sensor, my reasoning is-

    Easystart is aiding the speed of the cranking process therefore improving the signal from the crank to the ECU I don't have acess to the data sheet so would not know if 280rpm is fast enough to excite a voltage from the sensor, it may just be the sensor winding is braking down, the only real way to test a crank sensor is by using a scope to see the wave form that it is producing. You have done so much already it would be a shame to hit it with a big hammer for the sake of a crank sensor, but don't hit me with a hammer if you buy one and it is not!

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    Hi,i have renewed the crank sensor but still no joy.I have disconnected the loom from the edu & sensors & withdrawn the loom into the engine compartment.I have exposed wiring to visually check condition & checked for continuity with an ohmeter from engine ecu to edu connector & to sensors etc.guess what...No faults found !!!

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