Alan

United Kingdom, Ford Focus 1.6i, 2001, manual transmission, 39K miles.

Today my engine warning light came on accompanied by a very rough
engine.

The engines attempts to maintain tick over revs, but feels lumpy as if
one or more cylinders are not firing correctly

All the obvious were immediately checked , fuel and all fluid levels
okay etc. Temperature gauge not above normal.

On gentle execration the car hesitates but is derivable - I nursed it
home at 20/25 mph

I have a cheap OBDII reader and this gives the error codes

Fuel and Air Metering
Code 0181 - Fuel Temperature Sensor A Circuit Range/Performance

and

Transmission
Code 0761 - Shift Solenoid C Performance or Stuck Off

I suspect that the transmission warning is bogus (unless someone knows
different) - the car has manual gearbox.

Would a failure of the fuel temperature sensor cause this type of fault?
Does anyone know where it is located?
Is it part of some other sensor/control?


--
Alan
news2006 {at} amac {dot} f2s {dot} com

 

ford_technical_

with this model and age its normally the coil pack, that will explain the 2
cylinders off (we used to change about 5 a week)

diesels have a fuel temp sensor, i'm sure petrols dont have them
i would ignore both codes and go for a coil pack

Tim \(remove obvious\)

"Alan" <junk_reply@amac.f2s.com> wrote in message
news:PcN3NYB$FT1DFwOl@amac.f2s.com...
>
>
> United Kingdom, Ford Focus 1.6i, 2001, manual transmission, 39K miles.
>
> Today my engine warning light came on accompanied by a very rough
> engine.
>
> The engines attempts to maintain tick over revs, but feels lumpy as if
> one or more cylinders are not firing correctly
>
> All the obvious were immediately checked , fuel and all fluid levels
> okay etc. Temperature gauge not above normal.
>
> On gentle execration the car hesitates but is derivable - I nursed it
> home at 20/25 mph
>
> I have a cheap OBDII reader and this gives the error codes
>
> Fuel and Air Metering
> Code 0181 - Fuel Temperature Sensor A Circuit Range/Performance
>
> and
>
> Transmission
> Code 0761 - Shift Solenoid C Performance or Stuck Off
>
> I suspect that the transmission warning is bogus (unless someone knows
> different) - the car has manual gearbox.
>
> Would a failure of the fuel temperature sensor cause this type of fault?
> Does anyone know where it is located?
> Is it part of some other sensor/control?
>

Given that you are getting spurious fault codes (no fuel temp sensor on a
petrol, and definately no shift soloniod on a manual box) and a severe
misfire, i'll bet my lower ball that your coil pack has thrown the towel in
and is spiking the ECU .

Fairly to very common on the 1.6. (though not as common as if it were a
Peugeot / Renault / VAG!)

Tim..

Alan

In message
<6a8dd955977b9540f44c241b1b41ba7a@localhost.talkaboutautos.com>,
ford_technical_ <dave@nospam.co.uk> wrote
>with this model and age its normally the coil pack, that will explain the 2
>cylinders off (we used to change about 5 a week)
>
>diesels have a fuel temp sensor, i'm sure petrols dont have them
>i would ignore both codes and go for a coil pack
>
>


Despite my appalling spelling in the original post, your diagnosis was
correct.

Duff coil pack.

--
Alan
news2006 {at} amac {dot} f2s {dot} com

Gary Avrett

Just had a coil pack changed today for the very same thing. Check Engine
light on and running rough.
I read on a Ford Focus Forum this was common on 2001 models...guess still is
on 2005. The service guy said they put a newly designed unit on Cylinder
number one.


"ford_technical_" <dave@nospam.co.uk> wrote in message
news:6a8dd955977b9540f44c241b1b41ba7a@localhost.talkaboutautos.com...
> with this model and age its normally the coil pack, that will explain the
> 2
> cylinders off (we used to change about 5 a week)
>
> diesels have a fuel temp sensor, i'm sure petrols dont have them
> i would ignore both codes and go for a coil pack
>
>
>