fuel problem

Discussion in 'General Motoring' started by wolves, Aug 21, 2006.

  1. wolves

    wolves Guest

    i am still haveing problems with my j plate 940gl.the problem was with
    about 1/4 tank of petrol the car would suddenly stop then start after a
    few minuits of cranking, and give the codes 121 maf signal faulty or
    absent,and 144 load signal from fuel injection absent or faulty.i changed
    the in tank pump (new unit)and it ran ok for a week even down to nearly
    empty,put £10 fuel in tank and within 5 minuites it cut out twice and gave
    the same codes.this morning it cut out again but this time gave the code
    232 fuel supply too weak or to rich at idling and 144 load signal from
    injector absent or faulty.would the problem be with the main fuelpump,fuel
    filter,or fuel pump relay if so how would i check these.im now getting
    p$"£^d off with it .i am also doing this with low funds.
    wolves, Aug 21, 2006
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  2. How about the relay for the intank pump or the new intank pump itself
    also. When in doubt change fuel filters if you haven't already. If it
    is not that you can save the old filter and reuse it.

    I once got a tank of bad gas, with sand, water, who-knows-what in it.
    To limp to a garage, I would stop periodically and remove the fuel
    filter, and put it on the fuel pump backwards and pump some gas through
    it backwards to clean some of the gunk out of it, and put in on forward
    to clean any gunk that got caught on the wrong side and then reinstall
    it. After doing it about 3 times I was able to limp out of the outer
    banks of NC and get to a garage. They drained the tank and cleaned it
    before refilling it. They also put on all new filters and a can of dry
    gas. The crap didn't hurt the pumps.
    Stephen Henning, Aug 21, 2006
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  3. The fuel filter does need regular changing to ensure that this fault does
    not arise. I think it is around 35,000 - 40,000 miles intervals.

    All the best, Peter.

    700/900/90 Register Keeper,
    Volvo Owners Club (UK).
    Peter K L Milnes, Aug 22, 2006
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