Been having rough idle on the car when in drive not as much when in park. Car stalls sometimes when stopped and has delayed acceleration when going from stop. Car will sometimes stall when coming to a full stop and had it stall twice when doing a right turn at low speed. I have codes p0172, p0175( car running rich in both banks) p0104 mass air flow circuit intermittent and p0128? Coolant Temperature Below Thermostat Regulating Temperature.
I changed the coolant thermostat and the error code when away added STP in the tank and the rich codes went away. cleaned the mass air flow sensor and error code came back. For a while the code was the p0104 mass air flow only but now again all of 4 of them came back. The diagnostics on the obd2 has the MAF looking fine then dropping hard then normal, so it seems like the MAF sensor is working fine. I'm thinking there is a vacuum leak some where but don't know how to check for it on this car, don't see any loose lines (visible) any ideas?
I changed the coolant thermostat and the error code when away added STP in the tank and the rich codes went away. cleaned the mass air flow sensor and error code came back. For a while the code was the p0104 mass air flow only but now again all of 4 of them came back. The diagnostics on the obd2 has the MAF looking fine then dropping hard then normal, so it seems like the MAF sensor is working fine. I'm thinking there is a vacuum leak some where but don't know how to check for it on this car, don't see any loose lines (visible) any ideas?
Aug 6, 2019 at 5:20 PM
