ben Posted September 1, 2008 Share Posted September 1, 2008 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 Quote Link to comment Share on other sites More sharing options...
ben Posted September 4, 2008 Author Share Posted September 4, 2008 any ideas??????? Quote Link to comment Share on other sites More sharing options...
Rikos Posted September 4, 2008 Share Posted September 4, 2008 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? Quote Link to comment Share on other sites More sharing options...
ben Posted September 4, 2008 Author Share Posted September 4, 2008 stationery an when the car is on tick over Quote Link to comment Share on other sites More sharing options...
Rikos Posted September 4, 2008 Share Posted September 4, 2008 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. Quote Link to comment Share on other sites More sharing options...
beasty Posted September 7, 2008 Share Posted September 7, 2008 idle valve maybe your problem common with fiestas Quote Link to comment Share on other sites More sharing options...
ben Posted September 7, 2008 Author Share Posted September 7, 2008 how do i find out if it is that Quote Link to comment Share on other sites More sharing options...
beasty Posted September 7, 2008 Share Posted September 7, 2008 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? Quote Link to comment Share on other sites More sharing options...
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