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Starting problem and observation Posted by Saabster [Email] ![]() ![]() |
1994 9000 Turbo.
I am having trouble starting my car (intermittently). When it is working it starts perfectly but every couple of starts no matter how long I crank it for it will not start.....but then I usually just have to turn the ignition off and then try to start it again after which it will again start straight away again...in extreme cases I may have to repeat this step a couple of times.
While having these problems I have noticed something that I think is related (Fuel Pump????) but can anyone suggest what may be wrong with it as when it is working it seems fine??
What I have noticed is the following.
If I have my radio "de-tuned" from an AM station while the car is running you can hear a constant "buzzing" radio sound (ZZZZZZZZZZZZ)...when you switch the engine off (ignition still on so radio works) this ZZZZZZZZZ continues for about 5-10 seconds, then stops. I am assuming that this is the fuel pump switching off.
Further upon starting the car when you turn the ignition to ON (without the engine on) this sounds starts up again.....as if to say that the fuel is being pumped in.....then start car and this sound just continues at a constant level irrespective of revs.
So what I have noticed is that when my car does not start this sound is absent when I turn the car to ON before starting.....So I assume petrol is not being pumped into engine.
Has anyone else noticed this "sound" and can anyone suggest why it only happens intermittantly and what should I do to fix it.....is it the pump or is it the computer giving it the wrong messages????
I would love it if someone else can try this experiment to see if they get the same nioses.
Simply have radio on with medium volume on your favourite AM radio station. Then push adjust the Seek so that you cannot hear this station. Then put key to ON and see if you get a buzzing sound through the speakers.
Cheers guys..(and gals)
posted by 210.8....
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