lt1: rough idle/bad throttle response=>ecm changing always open/closed loop!
A few days ago I entered the forum with the problem above:
Rough idle/bad throttle response. But the engine (92'Corvette LT 1) starts normal, cold and hot. The rough idle starts after warming up.
Now I used a scanning software and the only thing I noticed was that the engine is always changing between open and closed loop. Could this be normal?
The O2-sensors always have arround 0.5 V. I think this is ok, isn't it?
Last weekend I disconnected the O2 sensors but without any reaction to idling.
Perhaps I could send the data (From TTS Datamaster) to anyone who could handle these data better than me => You're welcome.
69`Camaro, 92`LT 1 / 94' BW-6 speed, shorty headers+Flowmaster, Vette wheels, Eibach/hotchkis springs, koni shocks, Nova rear, Corvette 13" front brake system
[all certified by German association for technical inspection with Oldtimer title]