volvo1975
Hello trying to help an old guy in town with an 850 won't start when warm, lamda sond light on ..does someone know what it could be..we have no Volvo mechanics anywhere near here..thanks guys
Ex850R
Idle air control valve needs cleaned?
Plugs and dizzy ok?
MAF need cleaned?
Clear the codes if you can.
Unplug MAF and see if it starts and runs better without it.
Could be cam sensor or coolant temperature sensor too....
volvo1975
Hi snoop .thank you, new coolant sensor ,I should've said thank you I'll get into it.thanks again