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Re: stalling at full throttle
Posted by c.k.christacopoulos (more from c.k.christacopoulos) on Fri, 29 Jun 2001 21:24:03
In Reply to: stalling at full throttle, rob riehle, Fri, 29 Jun 2001 12:00:14
> 1987 900s 16v non-turbo 5sp. when the car is first started (after a long
> cranking time) the engine will oscilate from high to low revs. and after a bit
> will steady out. if i touch the throttle, it seems like the engine floods
> right out, or has extremely restriced air flow. about 3 seconds of full
> throttle will stall the car right out. taking off from stop signs and lights
> is almost all clutch work now. after about 30 minutes of driving, it loosens
> up a bit, but will still stutter, stumble, what ever the word is, a little
> bit. please help me out here, this is my first saab, and is a lot different
> under the hood than my camaro!!!!
Completely guessing here and if it has any kind of electronic system
management I could be very wrong.
You think it floods.
In this case you may have an electrical problem, eg. weak spark ... but as a
guess then it would not start at all as the more the cranking the more the
flooding. When it refuses to start remove a sparking plug, it should be
covered in fuel.
Too much fuel thus die on accelaration? Noooo. If it had more fuel it would
go faster :-)
If can be electrical ... I don't know if your model has that big rod
drinking-glass-like (capacitor type thing) from which a line feeds into the
distributor. If you have one of those things worth replacing. Starting
problem can be associated with it as it results in weak spark. But the
carwould show luck of performance not stalling.
It can be air but unlikely. Before you try starting the car remove the air
filter and just see if it starts.
I think your car does not get enough fuel through and maybe it has more
problems. 1. Difficult starting could be caused by luck of fuel and you
need so much cranking to get the fuel through. 2. On accelaration the
engine does not want that much more air, it in fact wants more fuel for the
same air.
================================
I guess the car is injection (I know about carburretors :-( ) so anyone else
care to help? Staring requires the fuel accumulator (whereever it is) to be
in good order else the fuel pressure has to be built up through cranking.
Running needs fuel ... I don't think it is getting through. Guess, perished
injectors, fuel pump?
If money is not plentiful, checking the electricals is cheaper than the
injection system.
Charles
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