Car Won T Start After Replacing Mass Air Flow Sensor

Make sure your mass air flow sensor is clean b.

Car won t start after replacing mass air flow sensor. If i disconnect the mass air flow sensor it will run for about 20 seconds plugging it back in once it s started doesn t c read more. Next plug the sensor in start the truck and the voltage on pin 4 this is the signal wire for the mass air flow sensor. Shop ran codes and came up with crankshaft sensor. Sometimes an o2 sensor fails and you need to replace it.

A mass air flow sensor is not so cheap but it is not very expensive either. If you are going to replace the maf yourself then i d always recommend buying an oem mass air flow sensor. Was having problems with car turning off at red light or when coming to a stop. Mass air flow sensor replaced check engine light still on.

March 05 2016 01 36 56 pm fwiw i think the car s computer has a long term memory of past faults to help with troubleshooting. Replaced air filter and maf sensor. Maf sensor replacement cost. It determines the amount of oxygen in the gases which indicates how well the fuel is being burned.

Was told my crankshaft sensor needed replacing. Replacing a mass air flow sensor is fairly straight forward so most of the cost comes from the cost of the part and not the labor. You could get one for 120 300 to which you should add labor costs of 80 100. The o2 sensor then sends information to the electronic control unit or ecu the vehicle s computer.

Even if i put old one back car still won t start. My car has 20000 miles. The ecu then adjusts the air to fuel ratio to optimize the fuel combustion. A replacement mass air flow sensor can cost anywhere from 20 to 600.

Check engine light indicated mass air flow sensor. Therefore on average you are expected to pay 200 to 400 in total for a mass air flow sensor replacement. If your check engine light is on you could have a bad mass air flow sensor. Problems with vehicle turning off seemed to go away but now i have a rough idle.

2000 nissan maxima 3 0 liter dohc will start and die after a couple seconds. Car will drop below 1000 rpms and then rev back up to over 1500 like it wants to shut off. I replaced it with a new one now car won t start. Car was running bad.

Please start your own thread. Reply 15 on. I did find a skinned wire that looks like a rodent got it but i soldered it back together so it is solid. No problem starting before replacing sensor.

Auto repair shops hate this video. I have changed my mass air flow sensor twice with oem parts reset the code multiple times put a new k n air filter in and the light still comes with in 3 or so miles. I have a 2017 titan xd with the cummins.