Jimny from 1999 - G13BB - ruff high idle when starting to warm up
No fault codes (reading MIL light). I have no OBD1.
Ive been using the Service book fault finding procedure.
I have checked EGR - TPS - IAC - lambda = they all have right voltage or/and resistance.
There is no resistance on wires between sensors and ECU.
EVAP - air leaks, cant see nothing there. MAP and TPS have been changed to other used ones.
Changed lambda sond to an other new, universal one, with no change.
Had fuel injectors out and they seemed ok when cleaned them out.
OK fuel pressure according to owner. This car has no fuel filter.
New spark plugs.
Spark on coils.
History on this car, has had problem with idle before - but not this severe.
Duty cycle on IAC (should be 4-30% at hot engine):
Where should I look further?