Now don't ask yourself; What should you do with P0129 code? Follow the diagnostics for Checking Fuel Delivery in this manual. Consult the service manual for exact specifications pertaining to your vehicle. Consult the service manual or information service for technical service bulletins that apply to the barometric pressure sensor, manifold air pressure sensor, or mass air flow sensor of your vehicle. If it's full, check P0129 that the fuel shut-off valve is open and that it is clean. Ignition on, engine not running. I haven't driven the car in a few days. At this point the van needs to be hooked up to a factory scanner that can read the live data entering the computer to see what is going wrong, replacing any more parts at this point will be most likely a waste of money, you have already installed a part that wasn't needed, you may have a wiring problem or another sensor, that will show up in a live data scan, this is not a code test, it looks at everything coming and going out of the engine control computer, all the many data channels.
The system pulls a vacuum on the fuel system and holds it for a period of time. Thanks everyone for the responses. This is done most easily from below the car in the area near the oil filter. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. The truck drives and idles fine other than it won't shift into 4th when the etc light is on. My car has a manual transmission.
My car does the same thing, just once a day or so. Replace the sensor if it fails to comply with specifications. If you have any doubt as to repairs on your vehicle, please contact your technician. If you store equipment with untreated gas in the tank, it can lead to engine damage. Swapped out the ignition coils and it idles better, but no fix with the main issue. The intent of the P0128 code is to indicate a faulty thermostat.
Throttle must be against its stop. I normally begin my diagnosis with a visual inspection of any system related wiring harnesses and connectors that I can gain access to in a reasonable amount of time. This system tests the fuel system to make sure it is not leaking fuel vapors into the air. The exhaust system must be free of any restrictions. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. Did the Engine Temperature value increase smoothly and did it reach at least 82° C 180° F? This would be the 5 volt reference. If you should require further assistance with this, I recommend the following inspection;.
I'm having an issue with my 2004 dodge ram 2500 5. We are not responsible for any actions you take on your vehicle. How to fix P0129 engine diagnostic code For Toyota Belta? I was in a safe location so instead of doing the key turn trick for stored codes, I just waited and had Torque running and did a scan. Check battery terminal ends for excessive corrosion. Swapped out the ignition coils and it idles better, but no fix with the main issue. Randomly the only code the car has every thrown is P0129.
Hello Everyone, So this is one that I can't get my head around. I can try the Cam Sensor as well. I don't know about ground question. The engine valve timing must be within specifications. The leak detection pump is part of the evaporative emissions system. What you want to look any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.
If you find the 5V reference is high or low, it is often necessary to disconnect each sensor that uses the 5V reference while monitoring the reference signal. U0100 was a pending fault. After replacing a faulty clutch pressure plate in my 2004 pt cruiser base not turbo , I attempted to start the engine. This is causing the truck to rough idle at times and stall when turning or coming to a stop. Does this code get buried so deep that it takes a the dealer to clear it? The list of automotive Makes at the right edge of the screen. Checked wire connections to throttle body seems good. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run.
I would check the airflow sensor first on the ducting from air cleaner to engine. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Look up the other , please use the search box. Pulled positive cable and put it to ground. I tried wiggling each connector and wire to see what one would make it stall with no luck. The information contained on this site is presented for informational purposes only. It could be a loose or leaking gas cap.
Wonder if I have a bad gas pedal assembly. My car has 105550 miles. Haven't looked at that one yet. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. Starting letter P diagnostic code shows that there are problems in engine, transmission and emissions systems. You might try to get that scanned.