I have 1995 4-Runner V6 167 kmiles. For few months idle was getting low down to 500 and rough. on warm engine Sometimes goes up to 700. Opening air valve on trothle body does not increase idle. I replaced temp sensor (switch) located at the rear of the engine - no difference. CFor about two months I am getting diagnosctic codes 25 and 26. Measured on hot engine at Idle voltage from OX-1 sensor is 0.1 V = lean mixure from OX-2 - sensor is 0.45 V = OK.
When I race engine voltage from OX-1 sensor goes up to 0.8V.
Ignition timing = +10 deg, I could not detect vacum leak with propane. Exost system is very tight. Air filter new. I do not notice loss of power. Any sugestion will be appreciated. Paul
When I race engine voltage from OX-1 sensor goes up to 0.8V.
Ignition timing = +10 deg, I could not detect vacum leak with propane. Exost system is very tight. Air filter new. I do not notice loss of power. Any sugestion will be appreciated. Paul
