St220 woes

[katy81]

Excessive fuel consumption

P0171
P0174
P0120
P0420
P0430


Suggestiond

 

[HoneyBadger]

10/10 would read again.

 

[tom_e]

Suggest searching the codes and going from there

 

[katy81]

Yeah they are like running lean/rich.

I know a lot of people here have had one. Thought it night be a common problem

 

[sx_turbo]

Seems a bit odd, there are 3 faults all at the sake time there.

I'd clear the codes and try again.

It could be lambda sensor as 3 of those codes relate to running lean, it could be a faulty pcm valve 1 is the cat, and 1 is tps

Is there any other symptoms like rough idling or anything?

 

[katy81]

Nah runs spot on.

Idle is low though 500rpm. Doesn't stall though

 

[katy81]

I've reset the codes, all but tps that comes back

 

[sx_turbo]

I've reset the codes, all but tps that comes back

Sounds more like a vacuum leak than anything, might have a slight crack in a hose somewhere or something, but could also be the pcv valve causing the same.

 

[Rroff]

With a spread of codes like that lambda/oxygen sensor is the usual suspect as mentioned above, sometimes just sticking some additive/premium fuel through might be enough.

 

[katy81]

 

[sx_turbo]

Ah, ned to repair the wiring loom there, looks like it's melted on the exhaust, seems that's your failure, make sure it's tied well out the way when it's fixed

 

[Nasher]

Get the soldering iron out

These older Fords also go mental like this when the battery is dying.

 

[Sinbad2000]

Vacuum/boost leak will lead to alternate rich/lean codes...