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        General >> OBD Advice >> Help with  DTC`s please
        
(Message started by: a11mcr on Jan 23^rd, 2008, 8:02pm)

Title: Help with DTC`s please
Post by a11mcr on Jan 23^rd, 2008, 8:02pm

Hi all just got myself a elm327 obd tool and using scan tool.net i got these codes from my 1995 2.9 24v cossie
(lack of power and rough idle) but cleaned the MAF

P0113
P0131
P0132
P1131
P1132

I have checked on the site but cant make head nor tail of what they meen ???
All i want to know is what to replace to fix it :)
cheers
mark

Title: Re: Help with DTC`s please
Post by Simmo on Jan 24^th, 2008, 7:13am

Have a read of THIS (http://www.fordscorpio.co.uk/ho2smonitor.htm) page as it would appear that one of the Lambda sensors is u/s. The first code relates to the air intake sensor,which ,on the 2.3, is fitted under the inlet hose to the throttle.

Title: Re: Help with DTC`s please
Post by a11mcr on Jan 24^th, 2008, 9:05am

Thanks i have read that but dont understand it much ???
how can i tell which sensor it is or should i change all four ???
cheers
mark

Title: Re: Help with DTC`s please
Post by scorpio_man on Jan 24^th, 2008, 9:16am

hi there

first of all clear all the codes and run it for a day or two to see if they come back.

if they do, the pre cat sensor on the driver's side is suspect.

check the wiring to it. if it's sound, you can get a sensor from cats direct (4 wire) for about £30 without plug.

a bit of a pain to change on the 24v, so get the lambda socket as well.

re the air intake sensor, this might have been unpluged with the engine running, hence the code. this will have an effect on the car if it's faulty.

hth

Title: Re: Help with DTC`s please
Post by Simmo on Jan 24^th, 2008, 9:31am

This page (http://www.fordscorpio.co.uk/eecv.htm) shows you where the air intake sensor is on the Cosworth.

Title: Re: Help with DTC`s please
Post by a11mcr on Jan 24^th, 2008, 9:40am

will clear the code's and see how it is over the weekend.
thanks
mark :)

Title: Re: Help with DTC`s please
Post by a11mcr on Jan 31^st, 2008, 9:32am

filled up with £20 of fuel and a bottle of redex.
still hesitating and sluggish up to 4000rpm and dtc codes are back ???(appart from the air intake sensor)
does the 24v have 4 lambda's or 2 and could there be anything else :-/.
cheers
mark

Title: Re: Help with DTC`s please
Post by Snoopy on Jan 31^st, 2008, 9:49am

4------ two pre cat which are the MOST important and 2 post cat which do not really serve much purpose.... It is ussually the pre cat ones that cause the problems

Title: Re: Help with DTC`s please
Post by a11mcr on Feb 6^th, 2008, 11:08pm

please take a look at these and tell me whats wrong ???
http://i29.tinypic.com/121foer.jpg
http://i27.tinypic.com/rkvcev.jpg
http://i27.tinypic.com/2n7oy7n.jpg
also i have a list of dtc'c when i find them.
mark

Title: Re: Help with DTC`s please
Post by scorpio_man on Feb 7^th, 2008, 10:13am

hi there

one of the reason for your poor running is in photo 2. you're running open loop, ie the lambda sensors are not controlling the fueling (that's IF the car was running for more than 180 seconds).

there's not a lot of info from your photos. photo 1 doesn't show what % correction on the fueling between banks, though you have a dtc (driver's side pre cat), but it also thinks this sensor is u/s.

the MAF reading looks fine at 0.4.

the tps reading is a bit high. should be in the 16% range when closed.

re the lambda sensor reading. do the switch nicely between 0.2 and 0.8'ish? and switch quite fast?

could be anything. :-/ main ones are....
lambda sensor(s)
cat(s)
fuel pressure regulator
air leak
wiring

i'd still look at changing that lambda first, along with looking at the wiring and air leaks.

hth