my99 uk flatspot
01 January 2007, 09:22 PM
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my99 uk flatspot
hi i got a my99uk under 3000rpm i have a flat spot not all the time items i have changed maf 2days ago. o2 sensor knock sensor new panel filter apexi . no fault codes so now im a little stumped anyhelp ?
02 January 2007, 12:49 AM
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mine has a slight surging type feeling just before the boost kicks in if im gentle on the throttle at around 30mph in third same year car could be what your describing wouldnt mind knowing whats causing it sort of feels like im squezing the brake on and off mind its perfect if i just nail it through the gears
02 January 2007, 01:00 PM
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disconnect the oxygen sensor, then try
surging is caused by fuel mix correction applied after reading the oxygen sensor signal. very common on MY99/00 cars, you just have to live with it.
Some fuels are better then others at damping this out, due to their different burn.
I found Optimax to be the worst for surge and Esso SUL to be better.
surging is caused by fuel mix correction applied after reading the oxygen sensor signal. very common on MY99/00 cars, you just have to live with it.
Some fuels are better then others at damping this out, due to their different burn.
I found Optimax to be the worst for surge and Esso SUL to be better.
02 January 2007, 04:08 PM
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anygear but low revs. sometimes feels like its going to cut out if you hold at the same rpm below 3000 that is. i run esso sul as thats the nearest garage .oh well might just have to live with it .
02 January 2007, 05:31 PM
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Hey guys, I have a very similar problem and was just wondering why you say you have just gotta live with it? Get a new sensor and sort it out surely? Why do you have to just live with it, can't it be fixed? I'm new to scoobies btw, I only got mine about a month ago lol, so you'll have to excuse me if I'm being stupid here! 
02 January 2007, 09:20 PM
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Originally Posted by simonds1
Hey guys, I have a very similar problem and was just wondering why you say you have just gotta live with it? Get a new sensor and sort it out surely? Why do you have to just live with it, can't it be fixed? I'm new to scoobies btw, I only got mine about a month ago lol, so you'll have to excuse me if I'm being stupid here!
i know what you mean. but i think what thay are trying to say is its a subaru fault all cars have problems ie bad gear change too poor headlights i have spent lots of money on my car most of that is servicing every 5000miles. changed most of the sensors the plugs and leads. i could go on and on but i still have a problem which i hope is something i have missed
anyway all the best with your new scoob. hope i have not put you off 
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