I own a Celerio ZXI AMT 2016 model (Aftermarket sequential CNG KIT). The car was running without many issues and has covered 1,47,000KM so far. All scheduled services were done on time. Recently my car started showing some strange issue- no response while pressing the accelerator pedal for a few seconds(2-3 secs). The issue occurs when we engine is at the idle stage or at a low speed(<20kmph). The issue starts as below.
1. Car idle RPM fluctuates from 630 to 790
2. Car suddenly stalls at idle RPM
3. While pressing the accelerator pedal, the car starts shaking abnormally, and RPM goes below 500 and stalls.
4. If RPM is above 1200 then there will be no problem engine is very smooth and quiet.
5. In city driving conditions unable to use AC because of engine stalling issue. on Highways everything is perfect.
6. No warnings on MID as well.
My car usage is 90% city, 10% State highways.
By Local mechanic's suggestions, we did the below services,
1. Throttle body cleaning (nearly 5 times) but no change in behavior of the engine.
2. Oxygen sensor cleaning, no difference.
3. Silencer cleaning (mechanic thought silencer is clogged, but it is very clean)
4. Battery replaced with a new one.
5. Clutch kit replaced.
Can someone help me to analyze this issue.
1. Car idle RPM fluctuates from 630 to 790
2. Car suddenly stalls at idle RPM
3. While pressing the accelerator pedal, the car starts shaking abnormally, and RPM goes below 500 and stalls.
4. If RPM is above 1200 then there will be no problem engine is very smooth and quiet.
5. In city driving conditions unable to use AC because of engine stalling issue. on Highways everything is perfect.
6. No warnings on MID as well.
My car usage is 90% city, 10% State highways.
By Local mechanic's suggestions, we did the below services,
1. Throttle body cleaning (nearly 5 times) but no change in behavior of the engine.
2. Oxygen sensor cleaning, no difference.
3. Silencer cleaning (mechanic thought silencer is clogged, but it is very clean)
4. Battery replaced with a new one.
5. Clutch kit replaced.
Can someone help me to analyze this issue.