okay, so i have a volvo 740 non-diesel non-turbo. it's had some minor problems up to now, the most recent being the car would shake when idling. i thought i had it fixed when i replaced it with a new oxygen sensor. now though, it completely died on me today. it just sputtered to a stop. Now, when throttled, the entire engine is shaking terribly, it looked like it was ready to jump out of the doghouse. So it appears to be working when it's cooled down. this has lead me to believe that this could be a vacuum leak of some sort. any ideas on what could be wrong?
Please and thanks you
God bless
Please and thanks you
God bless