|High idle speed
Question : I HAVE a 1997 Proton Wira 1.6 xli.
I cruise at 1,500 rpm even when the
engine is on neutral gear.
When on Drive gear, the rpm drops
According to many mechanics, the
engine is all right except that it consumes more petrol.
Do I need to change to a new throttle body set ?
I do not think you have a problem
with the throttle body or else you would
be having other problems.
I think you may be having an auxiliary
air valve which is not operating and the
mechanic is adjusting the idle speed
higher using the idle bleed.
When the load of the transmission comes in when you engage D, this pulls
the idle speed down to 1,000 rpm.
With an operational auxiliary valve,
the idle speed can be set at even below
1,000 rpm and the compensation will
come in when the load is applied and
maintain a constant idle speed.
I suggest that you put the EFI system
on a checker which will identify the
actual problem area without changing