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Topic: Re: error code p1071 (Read 3641 times) |
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scorpio_man
Administrator
Ford Kuga awd
 
Posts: 5654
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Re: error code p1071
« on: Jul 9th, 2008, 5:58pm » |
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hi there
p0171 is an error code for the system running rich. the car reports this as lean because that's what it's doing to try and correct the mixture.
have a read of this..... http://www.fordscorpio.co.uk/fuelmonitor.htm
hth
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: Re: error code p1071
« Reply #1 on: Apr 2nd, 2010, 4:16pm » |
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Hello
I cleaned MAF but this error code keeps coming.
What amount of lbs/min should perfectly working system on 2.3 16V flow at idle?
Sometimes autobox keeps too small gear
Any help is appreciated
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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tlundkvi
Full Member
Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: error code p1071
« Reply #2 on: Apr 2nd, 2010, 4:45pm » |
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on Apr 2nd, 2010, 4:16pm, Tekno wrote:Hello
I cleaned MAF but this error code keeps coming.
What amount of lbs/min should perfectly working system on 2.3 16V flow at idle?
Sometimes autobox keeps too small gear
Any help is appreciated |
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What is the condition of your lambda sensor?
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: Re: error code p1071
« Reply #3 on: Apr 2nd, 2010, 7:32pm » |
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Well, no idea, but MOT emission test was fine
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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tlundkvi
Full Member
Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: error code p1071
« Reply #4 on: Apr 2nd, 2010, 7:37pm » |
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on Apr 2nd, 2010, 7:32pm, Tekno wrote:| Well, no idea, but MOT emission test was fine |
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On my 24V i have around 4 grams (can't exactly remember unit) reading of the MAF.
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Pegasus
Full Member
24V Cosworth Ultima Born: Sept 97, sold Aug 23
Posts: 742
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Re: error code p1071
« Reply #5 on: Apr 2nd, 2010, 9:40pm » |
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Simmo's 2.3 has an average idle (in neutral) of 864rpm with average MAF reading of 2.54g/s
My 24V has an average idle (in neutral) of 720rpm with average MAF reading of 2.9g/s (r=0.97) - in drive (but stationary) the MAF reads 3.7g/s
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Tekno
Full Member
Tenho Ruohoranta
Posts: 599
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Re: error code p1071
« Reply #6 on: Jul 5th, 2010, 9:09pm » |
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on Apr 2nd, 2010, 9:40pm, Pegasus wrote:Simmo's 2.3 has an average idle (in neutral) of 864rpm with average MAF reading of 2.54g/s
My 24V has an average idle (in neutral) of 720rpm with average MAF reading of 2.9g/s (r=0.97) - in drive (but stationary) the MAF reads 3.7g/s |
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That's interesting because I have 4,27 g/s on idle
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1998 Ford Scorpio Ultima Estate 2.3i 16V
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: error code p1071
« Reply #7 on: Jul 6th, 2010, 12:38pm » |
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on Apr 2nd, 2010, 4:16pm, Tekno wrote:Hello
I cleaned MAF but this error code keeps coming.
What amount of lbs/min should perfectly working system on 2.3 16V flow at idle?
Sometimes autobox keeps too small gear
Any help is appreciated |
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Sounds very like what I was having. Cleaning MAF had no effect.
A. is air filter clean? (Have to take it out and hold it up to a light to see properly)
B. try it with MAF sensor unplugged.
This assumes all else is perfect, spark plugs, O2 sensors, exhaust system etc. If gearbox behaves better, then could well mean MAF is kn*ckered. I had to get a new one to fix the problem. Also if it's been running rich could mean the cat is shot as well
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Mike H
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Nunnspoet
Full Member
I love YaBB 1G - SP1!
Posts: 798
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Re: Re: error code p1071
« Reply #8 on: Jul 7th, 2010, 10:53am » |
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As a complete ignoramus but with a little experience may I suggest something: If the car runs well but the fuel economy, especially on Mways is poor, and you are getting P1071 the cause could well be a faulty O2 pre. Cat sensor/s. I had this on my 24valve and the cure was a new pre Cat. Sensor on Bank 1 (offside in UK). I had changed the Bank 2 Sensor but as the Bank 1 Sensor is difficult I did not change it as the car performed brilliantly except for a slight hesitation at traffic lights.
Bank 1 Sensor is a real pig to do. I gave up and handed her over to my friendly Garage. It took him an hour and a half to do with scuffed wrists etc. to boot! But the result is no Codes, no hesitation at tickover, 28mph on Mways and goes like a rocket.
A real beauty of a Cossie.
Mike 
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