Question : I AM wondering why the rpm of my wife's Waja
1.6L Campro engine sometimes waves up or idles
at 1,500-2,000 for a period of time (like we are
revving but we're not) when driving and comes to
a stop, especially when braking suddenly ?
Is this another character of the engine or is
something troubling ?
When I asked the Proton guys, they said it's the
fly by wire triggering and it's normal.
Is this true? My previous Wira also behaved like
that and the EON guys said it was the throttle
body chip melting and the throttle body needed
to be changed.
Also, can a shock absorber be jammed? How do
we know that it's jammed and can we repair it ?
Can we adjust the bouncing character of the Kancil at the back seat ?
1. The idle speed should not 'hunt', i.e. go up and
down, and this is an indication that the idle mixture
Since this happens when your wife uses the brakes,
I have a suspicion that there is a leak in the brake
servo, the vacuum hoses leading to the servo or the
check valve itself.
If there is a leak in any of these components, air
will be allowed into the inlet manifold and this would
cause instability in the idle mixture and the engine
I would suggest that you check all the parts mentioned for leaks and at the same time tighten up all
hoses between the air-mass sensor and the throttle
body, just in case there are leaks there.
2. A shock absorber if jammed will not allow the
suspension to move either upwards or downwards.
This rarely happens and usually the shock absorber
suffers from leakage when it becomes no longer effective.
If the shock absorbers are too soft or if you regularly carry a full load in the Kancil, then you may want
to look for uprated gas shockers that would help to
carry the load better.