When the mass air flow sensor becomes faulty, it delivers incorrect information to the power control module. I dont know where to start with fixing this problem. If engine coolant temperature is above 82°C 180°F , allow the engine to cool until 65°C 150°F is reached. If it smells like fuel, change it. As the engine warms up to operating temperature, the actual coolant temperature thermometer reading and the scan tool Engine Coolant Temperature degree values should stay relatively close to each other. First, Fords have a high failure rate on the purge valve.
He advised that we change the air inlet manifold. Make sure you have proper fuel pressure, about 36 psi at idle, up to 45 psi with the fuel pressure regulator vacuum line disconnected. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. Try plugging in the coil put leave it out of the hole where you can see if it sparks. How serious is the P0172 code? Symptoms You will more than likely not notice any drivability problems, although there may be symptoms such as a misfire. Best regards, I totally understand your frustration. I recently also experienced hardening of the break paddle when the vehicle was loosing power and showing the engine light.
Shop around for the best dealI will post if thit is the cause. So i accepted because I have no other choice. I have an Audi a4 2004, 1,8t 163hp. At that point, you might not be able to start the car. Pay special attention to the fuel pressure regulator and the fuel injectors. With one particular code reader, I also get the P0089 code too.
In any case, I think you might have multiple problems. I now have 2 weeks to get the emissions test completed - cutting it too close for comfort. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Since you have '97 model you could have fuel pressure damper. Found fender under airbox covered with oily dirt. If the engine is running fine at that point, clear the codes and see if it comes back.
Consult your service manual for it's location if you need help. If any components in the fuel system are failing, replace them as necessary. Also, some aftermarket air filters require oil treatment for proper operation, which some owners may be overzealous in applying. No engine light came on. We buy all our scanners from them and think you should too! Also check if any vacuum leaks. When you changed the spark plugs, did you happen to notice if any of them were particularly dirtier than the others? Would the 02 sensor cause these problems? Have checked all sensors are either good or replaced bad ones…injectors are new…no gas smells or excessive exhaust smoke….
Try swapping it with coil 4 to see if anything changes. It looks like this: If it doesn't look like this then you have a fuel pressure regulator which is vacuum controlled. Is the coil pack wire harness in good condition? The vehicle can still be driven despite the code, but you might notice a significant increase in fuel consumption and a strong scent in the exhaust fumes. The information contained on this site is presented for informational purposes only. When I turn off engine it drops slowly to reach only 50 psi.
Did the first coil-pack replacement fix the problem, even if only temporarily? In any case, did you replace them with genuine Honda parts? If the fuel pressure continues to drop, you could have a leaking fuel injector, which would lead to a rich condition and possible misfire condition. When these adjustments become too large, code P0172 is triggered. Definition Combustion engines work by burning the mixture of air and fuel of about 14. So, when clearing the codes the car will run fine for a short period of time like 15 days then the same codes pop again. Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0172.
Inspect your air filter to ensure it is not dirty and it is seated properly. I recently 4 months changed turbo with its oil pipe at the dealer original oem. I purchased an extra set of O2 sensors and tried that - still no joy. If it sticks, you have a faulty sensor. If you need any data or specific readings, please feel free to ask me about it. Most routinely, the air-fuel ratio will be measured through the oxygen sensors calculating the amount of oxygen and carbon monoxide present in exhaust gases. I read that cat converter should be checked and most likely replaced with turbo replacement.
If the air ratio decreases to lower than 14. I followed the instructions, I cannot find one near the thermostat either. System Too Rich Bank 1 What does that mean? The fault occurring on bank 1 indicates that the problem is located on the side of the engine that has the 1 cylinder. You may also smell a strong fuel odor and see black soot in the exhaust tip or the back of the car, an indicator that a lot of unburnt fuel is making it through the system. That allows them to constantly suck fuel vapor from the charcoal canister. During engine warm up monitor the Engine Coolant Temperature degree value.
P0172 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission. The Mazda dealer is only clearing the codes. Hi ben, First of all, thanks for your reply. When the engine is cold, more fuel is added to help warm it up to a desirable temperature. You could have another problem, too, though. ملاحظة سريعة لكل شخص يعمل على شفرات تقليم الوقود: استبدال أجهزة استشعار نسبة الهواء للوقود أو مستشعرات الأكسجين لن يؤدي إلى حل هذه المشكلة. I found the small J shaped resonance chamber on the bottom completely full of clear oil!!! When a code P0172 is set, it means that the Fuel Trim is anywhere from -15 percent to as low as -30 percent compensated.