Here are the most common ones. These are listed in numerical order for easy searching. All steps should be followed in order to make sure that the inspection and repair is both thorough and efficient. Now, i don't know the exact code, as the AutoZone dude just said I needed to replace my speed sensor switch. The check engine light was illuminated, the speedometer was not working and upshifts were slow and sluggish. If they have the same switching action front and rear, it indicates that the cat is not converting gases properly and should be replaced. Here is how we suggest you proceed.
If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. It is especially volatile since it is right next to the hot exhaust at all times. This is purely a wear issue and not one due to abusive use of the car. When I put the truck in reverse or even sometimes when im taking off slowly in drive, it will die. Typically, the code will be triggered by the upstream oxygen sensor before the converter. You should also check that the spark plug gap is set properly.
Try shaving it and using the washing machine and insert generic laundry detergent here , hang dry on the line for a few hours on a sunny day and kitty will be full of life again! The second is a bad O2 sensor. In most cases the P0720 code does not keep a car from being drivable. You will either get black sludge out of it, or it may turn light green from tiny droplets of antifreeze that stick to the converter over time. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. It's important to replace the faulty component immediately to ensure your speedometer and other components work properly.
When it is faulty it may cause the transmission to shift abnormally. It is operated by a piston, and the seal could have swelled and caused too much friction. If you try any of the above methods and your truck dies or you get drunk and run someone down or you snort the Citric Acid and get a nosebleed or you get busted with the bag of acid in your trunk and they think you're pushing coke or any and all other boo-boos, brain farts and flubs, it's not my fault, okay? If they have the same switching action front and rear, it indicates that the cat is not converting gases properly and should be replaced. Another Acid for cleaning, will actually do more for some of the precious metals while Citric Acid is better for others, is Oxalic Acid, it's found in paint stripping and wood cleaning compound such as Behr's Wood Cleaner. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to , and make or suggest any repairs as needed. Fix your truck at your own risk! Part 1 -troubleshooting p0171 p0174 ford 4.
Related: Top Causes of P0420 in the Ford Explorer There are many things that can cause the P0420 trouble code in your Explorer. To be scientific, the molecules in the converter's precious metals will actually spread apart and clump together over time. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? A reputable technician will start by examining the freeze frame data from the trouble code scanner, which will give them information about the code, and will allow them to search for additional trouble codes that have been detected. What repairs can fix the P0720 code? There's also the open or shorted circuit issue but that's not even close to what we are discussing. Check Engine Light came on. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. Having worked at Ford for many years, I have yet to see a P0420 or P0430 being caused by an O2 sensor.
Here are a couple of good guides to help with that. When the fuel mixture is rich, the exhaust the O2 sensors see will be out of range and it could throw the sensor. I heard something about the Digital Transmission Range sensor being a common problem in the 4R100 trannys, is that the transmission I have? Go to a nutrition store, a U-Brew wine and beer store or in my case a candle making store. The solution is here : Ford Fusion P0720 Possible Solution : Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. If you find one missing let us know and we we'll add it immediately! Either way the clutch or transmission will need to be repaired or replaced. When any issue is found, it should be resolved, and the codes should be reset. Nov 22, 2009 a sign of a worn transmission, slipping and shifting hard and not engaging in gears properly.
Fix your truck at your own risk! If you try any of the above methods and your truck dies or you get drunk and run someone down or you snort the Citric Acid and get a nosebleed or you get busted with the bag of acid in your trunk and they think you're pushing coke or any and all other boo-boos, brain farts and flubs, it's not my fault, okay? The trouble codes will then be reset, and the vehicle restarted and briefly driven. P0720 code definition The P0720 trouble code notes an error with the output speed sensor circuit. Has switching an O2 sensor worked? The metal shavings do not indicate anything good i'm afraid was there big pieces? Good luck and may fixing your vehicle be as pleasant as being kissed by a thousand fluffy kittens. Need help with a P0720 code? Details: Driving down the road, minding my own business, and wham. Add 1lb of citric acid and agitate it with the cat submerged. The green overdrive off light was flashing. Nov 25, 2010 Hi, If the engine is revving but your not going forward then it sounds like your clutch is slipping if it is a manual, or the clutch packs are worn if it is an automatic transmission.
If it is switching quickly, it is definitely working. Now don't ask yourself; What should you do with P0720 code? For example, if the sensor failed due to an engine leak, then the leak needs to be fixed, not just the sensor. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. Maybe if it was a much older vehicle, that's just a bit too caustic for my sensors. It's basically an inefficient catalytic converter on bank 2 driver's side. Code P0720 identifies the problem as the output speed sensor.