[Taho]

Hey.
Im a new car owner and got myself a Volvo 940 with a b234f motor. it ran fine for about a month until it started having wierd issues.
The car would randomly lose power and gas pedal would only work when pressed slighty, if i press too much car starts to turn off. When the issue arrives i can still drive the car but only low rpm. It appears most of the time when im getting to high speeds (75 kmh+). sometimes u can hear a loud bang before losing power. I think from the exhaust? Car also is smoking more white than usual. I can do normal city drives with no problem. low speed driving works fine.
I have changed spark plugs and cleaned injectors. cleaned the throttle. also changed to a new air filter. no difference. car idles fine.