I have a ford fiesta 1.4i 16valve zetec,the car loses revs and trys to cut out when ticking over,the revs then start to bounce. i have change the airflow meter and had all the sensors checked on a diagnosics machine and they cant find a fault.
Hi there!
A few more things to check for you.-
A vacuum leak in any of the vacuum hoses will cause the ECU to make random guesses at what's going on.
Have you replaced plugs recently - or at all? This is probably the main cause - and certainly worth a try.
Fuel filter should be replaced at recommended intervals - about 3 years.
Clean your leads and HT gear really well with a degreasant. Any losses will be more noticable at tickover than high revs.
Lastly.........wear on cam lobes or timing belt.
Hope it's cheap for you!
Please spare a moment to rate as fixya! if any of this information proves useful. Thanks (I don't get paid for this)
1.6 16v escort had all service leads fuel filter lamda and cat starting from cold lumpy for 30 secs drives great heater goes hot cold temp gauge went up hot drop to cold and when ticking over idle alters to drop away but dosent stop engine would thermo do this
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