What are the reasons for the car's throttle being fully pressed but the RPM not increasing?
4 Answers
The reasons for the car's throttle being fully pressed but the RPM not increasing are: 1. Damaged spark plugs: The spark plugs are damaged, and the wear of the spark plug electrode gap leads to insufficient spark plug ignition, resulting in incomplete combustion of the air-fuel mixture; 2. Poor fuel quality: The poor quality of gasoline causes poor atomization of the fuel injector, leading to incomplete combustion of the air-fuel mixture in the cylinder. It is recommended to use higher-grade gasoline and perform a fuel system cleaning; 3. Unstable fuel pressure: If the engine carbon deposits have been cleaned, the engine oil has been changed, and the spark plugs have been replaced, but the problem persists, it is necessary to go to a repair shop to check whether the fuel supply pressure and the intake pressure sensor are normal. If the fuel pump supply pressure is abnormal or the intake pressure sensor value is incorrect and not working properly, the fuel pressure should be checked, and parts should be replaced if necessary.
My old car had this issue too, the RPM just wouldn't rise when I floored the gas pedal. At first I thought it was clutch slippage, since manual transmission cars often have worn clutch plates after long use, preventing power from reaching the wheels. Later inspection revealed the throttle body was severely dirty, completely clogged with oil deposits blocking the air intake - without proper airflow the engine struggled. Another time it was a faulty fuel pump failing to deliver enough gasoline, naturally limiting RPM. Don't overlook the air filter either; when dirty it chokes the engine. The scariest possibility is transmission trouble - automatic transmissions getting stuck in gear or ECU control failure. My advice: start with simple checks on filters and throttle body - you can clean those yourself. If it happens frequently, could be aging spark plugs or faulty sensors requiring shop repairs. Never skip routine maintenance; regular cleaning of key components prevents this. Remember, poor RPM response affects acceleration and creates highway dangers - address it promptly.
My car has had this issue several times—I press the accelerator to the floor, but the RPM doesn't budge, which feels really scary, especially worrying about an accident on the highway. There could be many reasons, like a clogged fuel system, a faulty fuel injector or fuel pump failing to deliver enough fuel. Or maybe the air filter is blocked, restricting airflow for combustion. I once experienced an ignition system failure where the spark plugs were worn out and couldn't ignite. Another possibility is a clogged exhaust system, trapping exhaust gases and choking the engine. For automatic transmissions, it might be a stuck gear preventing upshifts, while manual transmissions could suffer from clutch slippage. My advice is to pull over immediately and check if the air filter is dirty—it's an easy DIY replacement. If that doesn't help, head to a professional shop to scan sensors or the ECU with a diagnostic tool. Don't attempt random fixes yourself—safety first. Also, avoid flooring the accelerator in daily driving to extend component lifespan.
I've also experienced the issue of the engine not revving up when the throttle is floored, which is mostly related to air or fuel system problems. A clogged air filter restricts air intake, preventing the engine from drawing in enough air. Insufficient fuel supply from the fuel pump can also cause this. On the ignition side, weak sparks from aged spark plugs can be a factor. Carbon buildup and dirt on the throttle body can affect its opening. Faulty sensors like the oxygen sensor sending incorrect signals can also be to blame. For a simple self-check, see if the air filter is clean and replace it if dirty. If that solves the problem, great. If not, it might be an ECU or automatic transmission issue. Don't delay; get it checked to avoid bigger problems.
