Fuel Delivery System:
Leaking fuel injector can cause uneven fuel delivery. Replacing the leaky injectors can resolve the issue.
Vacuum Leak:
A vacuum leak can lead to a lean air-fuel mixture, causing engine surge. Inspect the vacuum hoses and seal for any leaks. Replace or tighten the loose hoses.
Idle Air Control (IAC) Valve:
A faulty or dirty IAC valve can disrupt idle stability and cause surging. Cleaning the IAC valve or replacing it if necessary can fix the issue.
Throttle Position Sensor (TPS):
A malfunctioning TPS provides incorrect information about the throttle position to the engine control unit (ECU), resulting in engine surge. Replacing the TPS can resolve the problem.
Dirty Throttle Body:
Accumulation of dirt and carbon on the throttle body can affect its smooth operation and cause surging. Cleaning the throttle body can rectify the issue.
Engine Control Unit (ECU):
Software glitches or hardware problems in the ECU can cause engine surge. Updating the ECU software or repairing/ replacing the faulty unit may be required.
Weak Engine Mounts:
Worn-out engine mounts may allow excessive engine movement, resulting in surging. Replacing the mounts can provide a stable engine position and eliminate the surge.
