engine problem
#1
engine problem
ok so ive had this car for a bout 2 years now. its a 94 volvo 850 turbo wagon. now, one random day i was on my way to work and my gas light was on and i had a backfire from the motor. now, i pulled over at a gas station put gas in and then went on my way. upon pulling out of station the car would not accelerate, it sputtered and shot alot of black smoke out exhaust. i pulled over, and it died. i can get it to start but it idles rough, runs like crap and the second i put it in gear it would die. i towed it home, and heres what ive done. i have replaced my mass air flow sensor. my plugs and wires. fuel pump relay, my cat on the exhaust. i even added some fuel injecotr cleaner thinking maybe it sucked some crap up. i replaced the fuel filter as well. still no luck. it idles smoother and will run and drive, but still really crappy acceleration and it has a hard time shifting gears, i have only driven it in my neighborhood as well since the innceident. i know my fuel pump is fine couse it hums like a brand new opne, i bought one and hooked it up it sounded the same. so please someone help me with this, what could my problem be. now after all the work and parts ive done it vcomes down to this. i start, it idles fine, almost better then before, i put in gear it sounds fine still, but once i go to accelerate it just feels like no power, almost like i have a 50cc dirtbike motor in there nmoving this car. so please help
#3
#5
#8
Me I would look other places first. The black smoke is a sign to me that something is making it run to rich.
Have you checked all the intercooler hoses good for cracks or holes? Make sure one did not blow off.
If you have OBDII see if you can get your hands on a scanner that can read real time. The read the O2 sensor and ECT temps.
Have you checked all the intercooler hoses good for cracks or holes? Make sure one did not blow off.
If you have OBDII see if you can get your hands on a scanner that can read real time. The read the O2 sensor and ECT temps.
#9
#10
#13
ok i bought a chiltons manual. nowhere does it say rpm or speed sensor. heres my latest update. with transmission in "park", i can rev the engine up and hit the governor or whatever. with it in drive it will not go over 2000 rpm, in forward or reverse. if i put it in neutral, i can rev it jsut fine. any thoughts to whats going on.
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