My car's fuel system gets stuck in open loop
#1
CF Beginner
Thread Starter
My car's fuel system gets stuck in open loop
My car works normal, normal revolutions, oxygen sensor responds well, the temperature sensor marks the temperature correctly, it does not have vacuum or compression leaks. The problem is that it does not make the ideal air / fuel ratio 14.7 - 1 and uses a lot of gasoline.
I have scanned and I have no error code, no check engine light on the dash. The oxygen sensor is oscillating in rich mixture (0.89v) but I have checked it by making it a controlled vacuum leak and it drops to (0.1v)
I don't know what it could be. If someone has happened to him or if normally the Chevrolet lumina 97 is like that. Please inform me of any clues here. Thanks
I have scanned and I have no error code, no check engine light on the dash. The oxygen sensor is oscillating in rich mixture (0.89v) but I have checked it by making it a controlled vacuum leak and it drops to (0.1v)
I don't know what it could be. If someone has happened to him or if normally the Chevrolet lumina 97 is like that. Please inform me of any clues here. Thanks
#2
Administrator
Welcome to the forum. You need to post your question in the Lumina section of the Forum where you will get more views as this is the welcome new members section.
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Daniel Alberto Diaz (April 19th, 2021)
#3
CF Monarch
My car works normal, normal revolutions, oxygen sensor responds well, the temperature sensor marks the temperature correctly, it does not have vacuum or compression leaks. The problem is that it does not make the ideal air / fuel ratio 14.7 - 1 and uses a lot of gasoline.
I have scanned and I have no error code, no check engine light on the dash. The oxygen sensor is oscillating in rich mixture (0.89v) but I have checked it by making it a controlled vacuum leak and it drops to (0.1v)
I don't know what it could be. If someone has happened to him or if normally the Chevrolet lumina 97 is like that. Please inform me of any clues here. Thanks
I have scanned and I have no error code, no check engine light on the dash. The oxygen sensor is oscillating in rich mixture (0.89v) but I have checked it by making it a controlled vacuum leak and it drops to (0.1v)
I don't know what it could be. If someone has happened to him or if normally the Chevrolet lumina 97 is like that. Please inform me of any clues here. Thanks
#5
CF Beginner
Thread Starter
#6
CF Beginner
Thread Starter
[QUOTE = pañuelo; 463761] Eso hace 2, de un posible mal funcionamiento del sensor MAP. [/ QUOTE]
[QUOTE = kevinkpk; 463749] Sospecho que el sensor MAP. [/ QUOTE]
I scan the car and I have seen the map working and it seems to me that it is working well. I would not know if they are erratic values or the correct ones. there I sent a capture of the graphs map, maf, rpm and O2 sensor.
[QUOTE = kevinkpk; 463749] Sospecho que el sensor MAP. [/ QUOTE]
I scan the car and I have seen the map working and it seems to me that it is working well. I would not know if they are erratic values or the correct ones. there I sent a capture of the graphs map, maf, rpm and O2 sensor.
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Steven Carter
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November 20th, 2019 9:36 PM