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o2 sensor or cis unit (idle valve) for sure. your
heating cct in O2 may be fried, causing your engine to run like crap
until exhaust heats the sensor to 1400+. Your idle valve can be
checked by cleaning then exposing to different temps, under which it
should open/close accordingly. There is plenty of info on the valve in
haynes manuals. Brad. Haralabos wrote: hay guys my volvo like to idel at about 300 rpm's when you just start it up for the first time, it's very near to shut off. But when it warms up it sits at about 900 rpm's where it should. I don't want to mess around with idleing screw because it will fix one problem and wrech the other. Please help me Bob Balafas 242 B23E |
