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2001 bug eye wrx starts but very bad ilde and will not rev at all
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Old 11 Mar 2012, 11:45 AM   #1 (permalink)
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2001 bug eye wrx starts but very bad ilde and will not rev at all

I have a 2001 wrx that i have taken off the road. I have been starting it weekly and letting it run etc. went to it last week it had a flat battery so i charged it up. car started left it running came back to it and it had cut out. so i started it up it runs just about some times cuts out but will not pick up offf idle at all.

I pulled the plugs out they are very black fitted a new set no difference
swopped the maf with a friends car still the same
checked fuel pressure which is 3 bar.
no eml if its left running it sometimes brings up a maf fault.
I just find it strange that it wont rev at all ?

any help would be great
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Old 11 Mar 2012, 12:06 PM   #2 (permalink)
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Re: 2001 bug eye wrx starts but very bad ilde and will not rev at all

if u plug a laptop in you would be able to see if the ecu is seeing the Maf, could the wiring to the maf have been damaged?
where are you testing the fuel pressure ?
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Old 11 Mar 2012, 12:55 PM   #3 (permalink)
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Re: 2001 bug eye wrx starts but very bad ilde and will not rev at all

testing fuel pressure at the filter out. I will plug the laptop in tomorrow and see if its getting the maf readings. What sort of maf reading should i see at idle ?
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Old 11 Mar 2012, 02:19 PM   #4 (permalink)
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Re: 2001 bug eye wrx starts but very bad ilde and will not rev at all

well if its seeing it at all its a start, with the code reader saying maf yet you have tried another ans still got the issue, makes you think it could be the wiring been caught somewhere "maybe", a easy way to test is see it can see the maf,
from memory on idle I get 6.7 grams, I know at 2800 rpm you should see 25 grams(approx).
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Old 27 May 2012, 10:02 AM   #5 (permalink)
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Re: 2001 bug eye wrx starts but very bad ilde and will not rev at all

Right i have not had a chance to look at the car until today as its off the road its not been a problem. the car still starts fine when cold revs to around 2000 but then bogs and wont rev any higher. as the car warms its then wont rev at all and also struggles to idle.

I have used the launch x431 to read data ( at idle but as the car had started to warm it was not smooth )

coolant temp 46deg.c

a/f correction #1 -12.5 %

a/f learning # 1 0.0 %

mani . absolute 413 mmHg

engine speed 1086 rpm

vehicle speed 0 km/h

ignition timing 7.5 deg

intake air temp 28 deg.c

mass air flow 7.19 g/s

throttle opening 0.0 %

rear o2 sensor 0.00v

battery voltage 14.24v

air flow sensor 1.64v

throttle sensor 0.52v

fuel injection #1 4.10 ms

knocking correction 0.0 deg

mani relative pressure -352 mmhg

fuel level 3.84 v

primary control 0.0%

tgv position 0.42 v

mass air flow 5.32 g/s

fuel pump duty 33.3 %

a/f sensor current -1.62 ma

a/f sensor resistance 27 ohm

a/f sensor 1.00

a/f correction 4.92 %

rear o 2 heater 2.92 v

a/f heater current 1.8 a

Then taking above data the car eml came on with

p0304 p0303 p0302 p0301 cylinder misire detected faults and 20b0 preparator codes ?

for it to misfire on all cylinders it hass to be something they share ? the car smells like its over fuelling ?

any ideas ?
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