Engine warning light

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Alan - 23 Jan 2006 19:41 GMT

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?

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

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ford_technical_ - 23 Jan 2006 21:38 GMT

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

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Alan - 26 Jan 2006 09:42 GMT

In message
<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

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

Duff coil pack.

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

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Gary Avrett - 29 Jan 2006 04:04 GMT

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.

> 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

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Tim (remove obvious) - 24 Jan 2006 00:03 GMT

> United Kingdom, Ford Focus 1.6i, 2001, manual transmission, 39K miles.
>
[quoted text clipped - 26 lines]
> 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..

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