Why is my Hyundai Accent 2006 cvvt battling to idle after cambelt broke. Was replaced with valves ect. Currently driving without airflow sencor being plugged in. Wouldn`t idle with it plugged in?
Compression test was done - 100 percent. Three of the 4 pencil coils have been replaced. Car was at Hyundai on computer couldn`t find anything. This problem is ongoing for almost 3 months. Please help!
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if you have damaged rods or valves in your engine, there would be almost no chance that the engine would run or even start. it is quite possible that you did not get your timing right when changing the belt. in most cases, getting the pulley to piston 1 TDC does not always guarantee that the engine timing is correct.
my advice is to recheck the timing of the engine, as well as Ignition timing (which is also controlled by the positioning of the crank pulley) before condemning any internal mechanical failure.
to answer your question, there is no written way of knowing whether your rods or valves are damaged without taking apart the engine and inspecting for damage. however, damaged internal components will always leave a trail.
you can try draining the engine oil and checking the oil for any metal filings. you can also take out the oil sump to check for any pieces of broken metal in the sump.
hope that helps
Without actually looking at the vehicle, it's difficult to say. The 1999 accent was equipped with an idle speed conrol actuator (common issue) or there may be a vacuum leak at the surge tank or the problem may be something electrical. Without a proper inspection/diagnosis of engine management components, it could be anyone's guess. Valve timing could be 'out', poor cylinder compression, restricted intake air flow, poor quality fuel/gasoline, restriction in the exhaust system, low fuel pressure, and the list goes on and on.
Best advice. Have a qualified Hyundai Service Technician properly diagnose your vehicle.
The main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.
2 airflow sensor out of operating range 3 coolant temp sensor out of operating range 4 oxy sensor indicates full rich 5 throttle potentiometer/airflow sensor... (low throttle pot signal with high airflow sensor signal) 6 throttle pot/airflow sensor...... (high throttle pot signal with low airflow sensor signal) 7 throttle pot...idle fuel adjustment failure(idle speed??) 8 intake air temp sensor...open or shorted circuit to sensor 11 Throttle pot at idle: Throttle pot idle trim out of normal range 12 Airflow meter: MAF signal out of range 14 Coolant thermistor: Resistance out of range or static during engine warm up 16 Air thermistor: Resistance out of range 17 Throttle pot: Out of range 18 Throttle pot/Airflow: Low throttle pot signal at high airflow 19 Throttle pot/Airflow: High throttle pot signal at low airflow 22 Fuel pump drive: ECU output to fuel pump relay 23 Fuel supply: Engine running too rich 24 Ignition Drive: ECU output to ignition Amp 26 Air leak: Engine running too lean 29 ECU self check 33 Injector Drive: ECU output to injectors 34 Injector: Looks for Injector dribble 37 EGR Drive: ECU output to EGR switching valve 39 EGR check sensor: EGR not working (normally pipe blocked) 44 Lambda (O2) sensor: Poor mixture control rich or weak (or misfire) 46 Idle speed Control valve: ECU output to Coil AB 47 Idle speed Control valve: ECU output to Coil CD 48 Idle Speed Control Valve: Stepper motor grossly out of position 66 Air pump: ECU output to air pump relay 68 Road speed sensor: Seen speed < 5km/h at high engine airflow 69 Drive/Neutral switch: Seen cranking in "D" or high airflow in "N" 89 Purge Valve drive: ECU output to purge valve this is all I could find