I have a 2003 Nissan Primera 1.8 SE. I've never noticed this on any other car, so I think it's a fault. Here goes... When I accelerate and change gear the engine revs' rise by 500rpm when I press on the clutch pedal. Sorry for the poor description but I'm no mechanic :-) From memory of other cars, the engine revs' fall when the clutch is engaged?
Any thoughts?
Pressing on the clutch pedal disengages the clutch, lifting it engages it.
Many modern cars have a switch on the clutch pedal to tell the brain that the clutch has been pressed, so a variation in engine speed is not too surprising. Also it the car is still and the pedal depressed then the gearbox drag is removed.
mrcheerful
Sorry about that :-)
It feels wrong though. There's quite a rise in engine revs' when I press on the clutch. It's only temporary and soon returns to normal, but I've never noticed ot on any other cars I've owned. Why would Nissan want the engine revs' to temporarily rise when pressing on the clutch?
1) To aid smooth gearchanges. 2) As part of the emissions control strategy, so unburnt fuel can be used without making the car speed up when creeping along.
It would only feel wrong if you have not driven many modern cars. AFAIK they all do it.
In fact, a 500rpm increase is quite a small amount. My Focus sometimes rises the tickover when the clutch is depressed by nearer 1000rpm, and more than that when the AC is on.
Chris
Thanks Chris, that clears that up. This is the newest car I've owned, and I guess I'll get used to it.
I also have a Focus and get around an 800rpm increase in revs, especially when cold during gear changes.
With time you will adapt to lifting off the gas slightly before you depress the clutch (rather than simoultaneously) and your 'flare' as its known will vanish.
Tim..
"Tim.." wrote in news:dsamk2$ivu$ snipped-for-privacy@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com:
I always feather the throttle just before changing, whatever the vehicle. It smoothes the forward weight shift and makes for a much better ride. It's probably less stressful on engine mounts, too.
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