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        General >> Problems >> over fueling problem
        
(Message started by: madmoggy on Aug 23^rd, 2011, 7:03pm)

Title: over fueling problem
Post by madmoggy on Aug 23^rd, 2011, 7:03pm

Hi thanks for allowing me onto your forum.
Although i dont own a scorpio i have a problem i hope you can help me with.
I have a 2.0 dohc 8 valve petrol transit 1998.
I understand this engine was used for a time in the scorpio.
At tickover the emmisions are spot on,however when the revs are raised to between 2 and 3 thousand the Co goes off the scale,the HC goes way high and the lambda goes way high.
I have replaced the engine managment temp sensor,and replaced the lamda sensor,cleaned out the egr valve and checked all the pipes ,hoses etc.
Any help would be appreciated .(if i had any hair i,d be pulling it out).
Regards Si.

Title: Re: over fueling problem
Post by 5stud on Aug 25^th, 2011, 7:24am

bfore you just go changing parts you nead to have your codes read .find somone in youre area that can read them .whear abouts are you

Title: Re: over fueling problem
Post by madmoggy on Aug 25^th, 2011, 1:51pm

Got no choice really ,cannot plug into this van,no engine managment light on dash and no plug to do a fault code check.
That was the first thing we tried.

Title: Re: over fueling problem
Post by amigafan2003 on Aug 25^th, 2011, 11:20pm

It wont have a EMC light but it WILL have a diagnostic port - just need to find it!

But I'm not sure what your problem is? You say emmissions are fine at idle but you rev to 2k+ the emission get worse?

Well, that's what's supposed to happen - you're burning more fuel so more CO2 + HC's will be produced.

When you say the lamda goes high - what way - rich or lean? If revving to 2k rpm I'd expect about 12.5:1 afr on acceleration and 15:1 ish cruising.

Title: Re: over fueling problem
Post by 5stud on Aug 25^th, 2011, 11:27pm

have a look in the top left hand corner of the fuse box under the stering wheel

Title: Re: over fueling problem
Post by gozz on Aug 26^th, 2011, 10:24am

As amigafan states,some Fords including the Scorpio are not endowed with a light,but in our diagnostics book the Transit from 1994 has the socket shown as near the drivers right knee.
GOZZ.

Title: Re: over fueling problem
Post by Mike H on Aug 26^th, 2011, 12:47pm

Yes as per amigafan, am tempted to ask "and the problem is?" ;D

How are the emissions being tested?

WHY are the emissions being tested?

Just curious

Title: Re: over fueling problem
Post by madmoggy on Aug 26^th, 2011, 6:42pm

And the problem is,the van is only doing about 10 mile to the gallon.
not the usual 25.
I mot cars all day and the emmisions are off the scale on the co,hc,(unburnt fuel)and lambda.
Still cannot find any diagnostic plug.
Local ford dealer draws a blank as well

Title: Re: over fueling problem
Post by madmoggy on Aug 26^th, 2011, 6:47pm

Gozz thanks for your reply,if you mean by right knee under the dash then there is nothing there.
Regards Si

Title: Re: over fueling problem
Post by 5stud on Aug 26^th, 2011, 8:31pm

it WILL be in the top left hand corner the cover fore the obd port allso holds the spare fuses.ahhhhh thear .

Title: Re: over fueling problem
Post by madmoggy on Aug 26^th, 2011, 9:46pm

5stud thanks ,I will have a look at the fuse box tomorrow.
Regards Si

Title: Re: over fueling problem
Post by madmoggy on Aug 30^th, 2011, 3:57pm

Thanks 5 stud think I may have found it ,sat staring at the fuse box for 15 mins till I realised the spare fuse cover came off (just as you said) 7 pin plug ,does that sound right ?.
im off this week so will have to wait until next to plug it in.(another tenner in fuel)
Hope this will shed some light on the problem.
Thanks to you and others for their advice,will let you know what I find. :-/