1993 Subaru Legacy Logo
Anonymous
Anonymous Posted on Jul 31, 2011
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We have a Subaru Legacy GT, Twin Turbo 93, the car cut out and will not start, no fault codes, replaced spark plugs, fuel filter, checked the fuel pump, replaced air flow meter, engine temperature sensor, fuel. Engine will start if one spark plug (drivers side) is taken out and run roughly with the passenger side cylinders firing ok and getting hot. After replacing right hand spark plug engine will start if rev'd will keep running as though in limp mode, will not tick over, cuts out and will not start again

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  • Anonymous Jul 31, 2011

    I'm sure it's not the fuel pump as I have two and one is a high pressure unit. Tried it with two different air flow meters also tried connected but not in the suction line. Check sparks and all look good. Dont have a fuel pressure guage. Have a spare engine with all sensors on. Tried the map sensor unplugged and didn't work.

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Try to change the ignition coil and if still not working then try the computer box or ECU

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  • Posted on Jul 31, 2011
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Sounds like your timing may be off, or have a crank shaft postion sensor failing, when it cuts are you losing spark completely? do you have a fuel pressue gauge? whats the pressure? also you could try running it with the map sensor unplugged and see if the condition improves

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