brokenbiker
Member
- Messages
- 10,437
- Location
- Llanbobyll, south wales
Focus has developed a problem.
Doesnt matter if its hot or cold, being driven or just sat being revved it has a stutter between 1500-2500rpm...
If i slowly bring the revs up it will climb normally to 1500 or so, then it will pulse and climb the revs a lot slower (while still pulsing) until the throttle gets to what shoukd be 3k rpm (the engine is still pulsing at 2500) then it will kick up to 3k and from that point will rev as normal until it comes back down into the 'danger zone'
At first i thought it was a simple fix...changed plugs, leads and mass air sensor (actually changed both sensors on inlet manifold) but its made no difference
Any ideas? 1.6 zetec petrol 2002 focus
Doesnt matter if its hot or cold, being driven or just sat being revved it has a stutter between 1500-2500rpm...
If i slowly bring the revs up it will climb normally to 1500 or so, then it will pulse and climb the revs a lot slower (while still pulsing) until the throttle gets to what shoukd be 3k rpm (the engine is still pulsing at 2500) then it will kick up to 3k and from that point will rev as normal until it comes back down into the 'danger zone'
At first i thought it was a simple fix...changed plugs, leads and mass air sensor (actually changed both sensors on inlet manifold) but its made no difference
Any ideas? 1.6 zetec petrol 2002 focus