le6898 New Member 1 Member For: 1y 3m 4d Posted 04/11/23 09:22 AM Share Posted 04/11/23 09:22 AM My FG is having a rev hunting issue from anywhere between 1k and 2.5k. Jumps anywhere between 250 to 1k revs. Hesitates to accelerate too, doesn't have a high idle or a missfire. No lights on the dash and no major codes. Have tried new maps and 02 sensor. Tried to the best of my ability to spray the intake with ether and propane. Any ideas would be appreciated. Cheers Link to comment Share on other sites More sharing options...
oliver francis New Member 9 Member For: 1y 2m Posted 26/12/23 05:57 AM Share Posted 26/12/23 05:57 AM Experiencing a rev-hunting issue in your FG, where the engine revs inconsistently between 1,000 and 2,500 RPM, accompanied by hesitation during acceleration, can be indicative of several potential issues within the vehicle's engine and fuel management system. One possible culprit could be a malfunctioning sensor, such as the Mass Airflow Sensor (MAF) or the Throttle Position Sensor (TPS). These sensors play a crucial role in delivering accurate data to the engine control unit (ECU), influencing fuel injection and ignition timing. If any of these sensors are faulty or dirty, they may provide inaccurate readings, leading to erratic engine behavior and hesitation. Another aspect to consider is the fuel delivery system. A clogged fuel injector or a fuel pump that is not delivering a consistent flow of fuel can result in uneven combustion, causing the engine to hunt for the correct idle speed. Inconsistent fuel delivery can also lead to hesitation when accelerating. Vacuum leaks in the intake system can contribute to these symptoms as well. A leak can disrupt the balance of air and fuel entering the engine, affecting its performance. Check for any cracked hoses, loose connections, or gasket failures in the intake system. Issues with the electronic control system, including the throttle body and idle air control valve, may also be responsible for the irregular revs. The throttle body could be dirty or malfunctioning, affecting the air-fuel mixture and engine speed. Regular maintenance, such as cleaning or replacing air filters and spark plugs, may help alleviate these symptoms. However, for a comprehensive diagnosis and resolution, it is advisable to consult with a qualified mechanic or technician. They can perform a thorough inspection, use diagnostic tools to identify specific issues and provide the necessary repairs or adjustments to restore smooth engine performance. Link to comment Share on other sites More sharing options...
TurboBurbo Silver Donating Members 48 Member For: 2y 10m 10d Gender: Male Location: WA Wheatbelt Posted 26/12/23 06:14 AM Share Posted 26/12/23 06:14 AM ... Oliver, why are you using Chatgpt to answer questions? what is there to gain? Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,119 Member For: 10y 10d Gender: Male Location: South Australia Posted 26/12/23 06:26 AM Share Posted 26/12/23 06:26 AM I've pulled better essays out my ass Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,434 Member For: 15y 1m 14d Gender: Male Location: Melbourne Posted 26/12/23 09:35 AM Share Posted 26/12/23 09:35 AM (edited) where did he copy and paste that from lel Edited 26/12/23 09:35 AM by bossmang Link to comment Share on other sites More sharing options...
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