Engines stops accelerating after turbo gauge reaches its max Topic is solved

Turbvolvo · Post by **Turbvolvo** » 06 Dec 2005, 09:40

I recently changed the front O2 sensor, the MAF sensor and the knock sensors of my 1994 850 Turbo wagon. After I changed those three sensors and tested my car, I noticed that when I press the gas pedal to its limit and the turbo gauge reaches its max, the engine stops accelrating as if it couldn't handle high RPMs. Someone in the forum suggersted me to check the lines that go into the air box but I check those and they are well connected. Do I have to adjust the throttle body cable again after changing the MAF sensor or the oxygen sensor? The main reason I changed those three sensors was because the engine was running fuel rich and I was getting very poor fuel mileage(11mpg). I think that the poor fuel mileage problem is gone but now I have to deal with the problem of not accelarating the car too much because the engine gets to a limit when it just stops accelerating. When I say that the engine stops accelerating is that eventhough I continue pressing the gas pedal the engine goes to a lower RPM like for 2 seconds and then continues accelarating and does that again in a cycle if I have the gas pedal pressed all the way. I would appreciate a lot if sommeone can help me deal with this problem. Thanks.

Theo
[email protected]

Guest · Post by **Guest** » 23 Dec 2005, 13:08

Turbvolvo wrote:I recently changed the front O2 sensor, the MAF sensor and the knock sensors of my 1994 850 Turbo wagon. After I changed those three sensors and tested my car, I noticed that when I press the gas pedal to its limit and the turbo gauge reaches its max, the engine stops accelrating as if it couldn't handle high RPMs. Someone in the forum suggersted me to check the lines that go into the air box but I check those and they are well connected. Do I have to adjust the throttle body cable again after changing the MAF sensor or the oxygen sensor? The main reason I changed those three sensors was because the engine was running fuel rich and I was getting very poor fuel mileage(11mpg). I think that the poor fuel mileage problem is gone but now I have to deal with the problem of not accelarating the car too much because the engine gets to a limit when it just stops accelerating. When I say that the engine stops accelerating is that eventhough I continue pressing the gas pedal the engine goes to a lower RPM like for 2 seconds and then continues accelarating and does that again in a cycle if I have the gas pedal pressed all the way. I would appreciate a lot if sommeone can help me deal with this problem. Thanks.

Theo
[email protected]

Sounds like fuel cutoff.