Wheres the heater moter - 1995 Volvo 850

Sorry I am unable to locate this diagram.

some thing in heater hitting the squirrel cage {fan blades }

Under the dash on the passenger side, remove any panels under daash to expose it.

Heater fan moter or Radiator fam motor?

it O2 sensor not heater. The sensors are located in the exhaust pipe between the exhaust manifold and the cat. converter. They look like spark plugs.

it should not be pressed in and can be easily removed thru firewall on passenger side

its usually under the dash in the passanger side or on the passanger side on the fire wall

if the motor does't work at all then it's probably the motor,if the resister is gone you should still have high,it does'nt go through the resister.you may have a bad ground to the resister,you may need a relay.

you may need to replace the blower motor its on the passenger side firewall and it is the only motor in that area held in by three screws and a plug

it could be the wire behind the fuse panel itself or the plug that plugs into the fan check these with a 12 volt tester and you should be able to find the problem also check the fuses under the hood and if you have an owners manual check in there and see if any are listed and where they are located