My 1997 volvo 850 base mode has voltage issues, when started in the morning the voltage from the alternator as well as battery reads 14.3 volts at idle and when driving with lights on, radio cranked up to 10, heater blowing at full, windshield wipers on high trying to knock the sick Oregon rain fall...

I installed a Bosch O2 sensor from IPD. A automotive technician from the college I work at says the O2 sensor is not sending feedback to ECM, but the fault in the feedback system happens at 1500 rpm and lower only. I'm gonna inspect the wires at the connecting harness before the Sensor. Other than t...

Closed loop, using at least one oxygen sensor but theres a fault in the feedback system. this fault happens only at 1500 RPM and lower, then will go into closed loop, using oxygen sensor feedback to determine fuel mix above 1500 RPM. I have also noticed at intermitent times that it will stay in the ...