When starting a cold car, the idle speed takes 5-6 minutes to drop below 1000 RPM, and the engine vibrates. I thought the throttle was dirty, cleaned it, but it didn't help. The oxygen sensor current shows -0.01 mA. The repair shop says it's fine, but I feel like there's an issue. What could be causing this?

Even after replacing the spark plugs, camshaft sensor, and cleaning the throttle body, my 2014 Peugeot 301 is still having trouble starting. Any ideas on what could be the issue?

The check engine light is on for your 2010 Mazda3 hatchback, and the fault code indicates that the fuel trim system is too lean after the catalytic converter. Here's what you can do: 1. **Check for Vacuum Leaks**: Inspect hoses and connections for any leaks that might be causing the issue. 2. **Inspect the Oxygen Sensors**: A faulty oxygen sensor can lead to incorrect fuel mixture readings and should be checked. 3. **Examine the MAF Sensor**: The Mass Air Flow sensor might be dirty or malfunctioning, affecting the air-fuel ratio. 4. **Look at the Fuel System**: Check the fuel injectors and fuel pressure to ensure they are functioning properly. 5. **Check the Catalytic Converter**: Although less common, a failing catalytic converter can cause similar issues. 6. **Professional Diagnosis**: If you're unable to identify the problem, it may be best to consult a professional mechanic for a thorough diagnosis. Remember, addressing the issue promptly can prevent further engine damage.

My 2018 automatic car with a turbo is losing engine oil. I've checked with the service center; there's no blue or white smoke from the exhaust, and there's no sign of oil leakage on the engine exterior. Both the oxygen sensor and spark plugs are clean. The service center couldn't find the problem. Anyone knows what might be wrong?

After a major maintenance on the 2006 Accent 1.4 manual, the spark plugs, carbon canister solenoid, and throttle have been replaced, and the fuel injectors have been cleaned. With the fuel price at 7.91, it's costing 0.9 per kilometer. Is this normal? The oxygen sensor is fine!

Possible reasons for the acceleration issue with your 2014 2.5 4WD Renault Koleos could include: 1. Engine issues such as clogged fuel injectors or a dirty air filter. 2. Transmission problems affecting power delivery. 3. Faulty sensors like the mass airflow sensor or oxygen sensor. 4. Exhaust system blockage. 5. Fuel system issues impacting fuel economy and power. It's recommended to have a professional mechanic diagnose the problem for an accurate solution.

I have a 2007 Touran, automatic 1.8t. It jerks noticeably during acceleration. When idling while parked, the RPM intermittently drops by 100-200, and the car lights dim. What should I do? (I've previously cleaned the fuel injectors and throttle body.)

Hey folks, no hate please. Just wanna ask, assuming HiPhi doesn't go bankrupt, is it possible for a used car to drop below 250k in three years? I really love this car, it's so cool. I saw it once on the road and didn't recognize the brand, but at first glance, I thought it was worth at least 2 million.

If your 2010 Suzuki Swift 1.5 automatic is still shaking after replacing the spark plugs, ignition coils, PCV valve, and EGR valve, there could be other issues at play. Some potential causes could be: - Engine mounts: Worn or damaged engine mounts can cause vibrations. - Fuel injectors: Clogged or malfunctioning fuel injectors can lead to engine misfires. - Throttle body: A dirty or faulty throttle body can affect engine performance. - Air intake system: Check for any leaks or blockages in the air intake system. - Transmission issues: Problems with the transmission can also cause vibrations. You may want to consult a professional mechanic to diagnose the issue more accurately.

When starting a cold car, the idle speed takes 5-6 minutes to drop below 1000 RPM, and the engine vibrates. I thought the throttle was dirty, cleaned it, but it didn't help. The oxygen sensor current shows -0.01 mA. The repair shop says it's fine, but I feel like there's an issue. What could be causing this?

Hey fellow car enthusiasts, do you also notice that when you start the car in P gear, the engine revs quite loudly, usually above 1000 RPM? But once you shift to D gear, it drops below 1000 RPM and the sound gets much quieter. Is that the case for you too?