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        General >> OBD Advice >> Re: error code p1071
        
(Message started by: scorpio_man on Jul 9^th, 2008, 5:58pm)

Title: Re: error code p1071
Post by scorpio_man on Jul 9^th, 2008, 5:58pm

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

Title: Re: Re: error code p1071
Post by Tekno on Apr 2^nd, 2010, 4:16pm

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

Title: Re: error code p1071
Post by tlundkvi on Apr 2^nd, 2010, 4:45pm

on 04/02/10 at 16:16:40, 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

What is the condition of your lambda sensor?

Title: Re: Re: error code p1071
Post by Tekno on Apr 2^nd, 2010, 7:32pm

Well, no idea, but MOT emission test was fine

Title: Re: error code p1071
Post by tlundkvi on Apr 2^nd, 2010, 7:37pm

on 04/02/10 at 19:32:04, Tekno wrote:

Well, no idea, but MOT emission test was fine

On my 24V i have around 4 grams (can't exactly remember unit) reading of the MAF.

Title: Re: error code p1071
Post by Pegasus on Apr 2^nd, 2010, 9:40pm

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

Title: Re: error code p1071
Post by Tekno on Jul 5^th, 2010, 9:09pm

on 04/02/10 at 21:40:50, Pegasus wrote:

That's interesting because I have 4,27 g/s on idle

Title: Re: error code p1071
Post by Mike H on Jul 6^th, 2010, 12:38pm

on 04/02/10 at 16:16:40, 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

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

Title: Re: Re: error code p1071
Post by Nunnspoet on Jul 7^th, 2010, 10:53am

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 :)