7 replies to this topic

[ben]

hi, my car is a 2002 fiesta with a 1.3i engine and when its running it fluctuates revs, and the car sortov shudders. what could be at fault

[ben]

any ideas???????

[Rikos]

Does it do this while driving or when it's stationery?

If your accelerating does it fluctuate or just when the car is on tick over?

[ben]

stationery an when the car is on tick over

[Rikos]

I had a problem with fluctuating revs on my clio and this was a problem with the ecu. So it may be that you've got a faulty ecu.

The shuddering could be when the revs drop too much it is starting to struggle and so shudders until the revs raise again.

[beasty]

idle valve maybe your problem common with fiestas

[ben]

how do i find out if it is that

[beasty]

right i have consulted haynes manual and it may not be idle valve it could be spark plugs knackered air filter clogged tbh best letting a garage look at it?