MGF - VVC - Rev Limiter????
Discussion
I have a MGF 1.8VVC which only revs to 6000RPM.
Should rev past 7000RPM.
It seems as though it's hitting the rev limiter early.
Anyone got any ideas?
I think it may be the Camshaft Position Sensor but not really sure.
Would like a better idea before I take it to the dealer and get ripped off when they plug it in to their diagnostics!
Any help greatly appreciated
Should rev past 7000RPM.
It seems as though it's hitting the rev limiter early.
Anyone got any ideas?
I think it may be the Camshaft Position Sensor but not really sure.
Would like a better idea before I take it to the dealer and get ripped off when they plug it in to their diagnostics!
Any help greatly appreciated
Hello Mike - car has already spent an hour at MGR plugged into testbook.
They have confirmed that there are no relavent error codes logged and that the ECU and all sensors are checking as ok.
They have given me 2 scenarios: -
Best Case - VVC timing incorrectly set when head went back on - 2 hrs labour and minimal cost
Worst Case - VVC modules had it. More labour intensive and very expensive parts.
the saga continues.........
They have confirmed that there are no relavent error codes logged and that the ECU and all sensors are checking as ok.
They have given me 2 scenarios: -
Best Case - VVC timing incorrectly set when head went back on - 2 hrs labour and minimal cost
Worst Case - VVC modules had it. More labour intensive and very expensive parts.
the saga continues.........
Engine runs absolutely fine (Or so I thought). I wasn't even aware that there was aproblem until I read a poll on a forum asking "How high do you rev yours to?"..
I was shocked to read over 7k rpm..mine doesn't get near it.
Car runs fine..never misses a beat and starts on the button..
Now you mention it...from time to time there is a loud "clatter" at tickove which sounds as though it's coming from the drivers side of the engine compartment. It can get very loud (embarrassingly so) but shuts up as soon as off tickover.....could that be a VVC module??
I was shocked to read over 7k rpm..mine doesn't get near it.
Car runs fine..never misses a beat and starts on the button..
Now you mention it...from time to time there is a loud "clatter" at tickove which sounds as though it's coming from the drivers side of the engine compartment. It can get very loud (embarrassingly so) but shuts up as soon as off tickover.....could that be a VVC module??
Should've posted this sooner. This problem has now been fixed.
The problem you are reporting with the load rattle on tick-over is exactly what mine was doing.
Mine also occured after head gasket work.
You won't like the answer.
My VVC mechs were not put back in properly and were basically jammed hard over one way. Therfore - no variable valve timing.
Head off and re-fitting properly I'm afraid!! - and just hope that none of the teeth on the VVC mechs have been damaged!
Sorry - don't shoot the messenger, but your problem sounds identicle to mine.
Hope this helps
Pete
The problem you are reporting with the load rattle on tick-over is exactly what mine was doing.
Mine also occured after head gasket work.
You won't like the answer.
My VVC mechs were not put back in properly and were basically jammed hard over one way. Therfore - no variable valve timing.
Head off and re-fitting properly I'm afraid!! - and just hope that none of the teeth on the VVC mechs have been damaged!
Sorry - don't shoot the messenger, but your problem sounds identicle to mine.
Hope this helps
Pete
Dave Andrews fixed mine for me as part of the performance mods.
Mine was probably like it for about 2k miles.
Any competent mechanic should be able to do the work. Assuming the head has only just gone on, it won't need skimming. Just needs to be taken off a refitting. Only parts required should be a new head-gasket and a new set of head bolts. If you reckon on about £100 plus labour - should be okay.
Mine was probably like it for about 2k miles.
Any competent mechanic should be able to do the work. Assuming the head has only just gone on, it won't need skimming. Just needs to be taken off a refitting. Only parts required should be a new head-gasket and a new set of head bolts. If you reckon on about £100 plus labour - should be okay.
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