My car has gone crazy, and keeps being smarter than me, unwilling to get fixed. Now engine behaves like dr. Jackal and Hyde. Problems:
1) COLDMODE: When started cold, car start fine, runs warm on 800-1000. When it gets warm, idle gradually drops to 200-300, engine nearly stalls, but mostly catches just in time with flashing dashlights. When driving, it takes gas badly, and hesitates before engine picks up. Engine sounds very hollow when idling, also slight loss of power seems to be present. 2) WARMMODE: When car is started warm, it behaves different. Idle is oscilating fast between 1000-1200. For the rest it runs fine, and takes gas very well. Also no loss of power seems to be present. 3) Generally, car runs very rich. I replaced OXS-sensor, but still it smells on gas, specially when running in COLDMODE. Turning down CO screw only results in unability to restart at all.Because i don't like breaking with left foot to keep engine alive when car has to stop, i removed ISV connector. Without ISV connector, car shows constant WARMMODE behaviour.
In the last month i changed and cleaned all parts involved in air intake and fuel injection. Fault code 2121 is present, but new idle switch didn't make the problems and fault code go away. Changed parts:
1) Seals of intake pipes. 2) Temp. sensor (black). 3) idle switch. 4) Injector inserts, and o-rings. 5) Plugs/air filter/oil. 6) OXS sensor. 7) Valve conver seal. 8) Fuel pump is 1 yr. old. 9) Changed cold start Valve, original is suspected to leak or not close properly.Question: I am now at the level where i am desperate. What should i do next ?. All help is very much appreciated.