ST202 Engine Hunting on Idle, I really need help with this please Options

[bibbler]

Hi,

I have a '94 st202 Jap Import. On idle the revs are up and down as far as 1500rpm and as low as 500rpm. I took out the K&N and installed a standard air box with new filter. It has had a full service and all new servicable parts changed but it is still doing it. There is no loss of power and there is no misfire. I suspect that there is a pipe sucking in air somewhere still unable to locate it. Had a few mechanics looked at it and all are stumped.

Am I to live with it or can this be fixed.

Any information and advice gratefully received.

Thanks

Clayton

[kavy]

my 3SGE was doing the same thing.changed all of its fuse,it was still there.disconnected the battery for three hours(someone told me that disconnecting it for half an hour'll reset the ECU and solve the problem) it was still there.after about 3 weeks,when i was cleaning the intake pipes(i think it was the fuel line breather that was connected to the intake pipe),i took out the whole intake and started the motor.found out that the little thing was breathing loudly.stuck my finger in there and the motor sorta choked like it did during start ups and the rev dropped to 500rpm.turned off the motor and took out the pipe to clean it and found it was clogged with dust.oh,the problem hasn't reappeared so far(hopefully its solvedalso found out that the guy who i bought the car from was using the car with it disconnected.for adding horsepower. shame.............