Corolla getting off at Cold start

[abdkhan2]

What could be the cause my car is getting off when the engine is cold below c and when it got above c everything gets fine.. Last year it was totally fine i didnt even wait for a single second in last December to get it abit warm.Intially engine remains at 1rpm for 30sec then it drops reduculusly and after reving the car didnt idle

[capsat]

MAF (MASS AIR FLOW) sensor malfunction when CNG is installed to cheat ECU with advancer emulator.

For VVTI engine there is different model of CNG kit - EFI-CNG kit has its own ECU plugged to vehicle ecu to perform without any trouble.

VVTI = variable valve timing [ intelligence ] the ignition is controlled through ECU based on air flow to intake manifold

[abdkhan2]

Bro actually my car runs fine on cng as advancer is connected which decease maf voltage signal as a result ignition advances problem is when the car is on petrol maf voltage signal is high as a result my car hesitate alot and consume petrol alot... According to scanner its taking about 4gm/s air at idle dont wheatar its wrong with maf sensor or vacuum leak?

[capsat]

vaccum leak

[abdkhan2]

How to find or i block some intake

[abdkhan2]

Any experts?

[capsat]

remove the air box and check for any cracks in housing & flexible air duct

[abdkhan2]

Thanks for yore precious time.

[abdkhan2]

Anybody knows about the readings
@Xulfiqar

[babarhyd]

It should be around 1.4-1.6 gm/s on idle at 700-800rpm

[abdkhan2]

Thanks alot,do u know voltage reading as well