04 Mk1 Focus 1.6 Zetec - Stuttering/Hesitation at 65-75mph


Hi,

Bought my late MK1 focus (04 1.6 Zetec) about a week ago. Really enjoying driving it! Took it over Snake Pass between Glossop and Sheffield this afternoon and was impressed by its cornering and grunt in the lower gears.

Just put it into the garage to have its cambelt/tens./pulleys/pump done as per age/advice.

I asked them to check out another issue which I am a little nervy about. At motorway speeds (65-75mph) and about 2.5/3000 revs, the engine feels hesitant/stutters as though its struggling to keep going. This only happens at these speeds. Even with my foot down it doesn't seem to gain speed in 5th gear at all and the steering wheel shakes until I reduce the speed to about 65 and the revs to about 2k.

There is NO engine management light. Or any light activity on the dash at all.

I have been doing some research and come up with the following potential causes... But there are a few:

Idle Control Valve
VSS
MAF Sensor
Throttle Position Sensor
Fuel Pump/Filter/Mesh Filter in Fuel Pump
Hose collapsing due to age/weakness
ECU issue

Now, I find it hard to believe its a sensor issue, as I have no EML. So it seems like a physical problem. It appear that I am not the only one whose mk1 focus has suffered from this issue at 60k+.

Any suggestions/advice (except for changing ALL of the above which is financially unrealistic) would be greatly appreciated.

Thanks. Hazbaz

 

Try changing their leads and or the spark plugs not sure how old they and steering shaking sounds like wheel balancing to me I have had these happen to me without listening or feeling the car at speed this is wot I would try gl