05-02-2018, 07:54 AM
Join Date: Mar 2009
Location: Georgetown, Guyana
MAF test procedures will vary with the type of MAF sensor and at this point I have no idea what type of MAF sensor an Epica would have - a diagnostic reader with live output should at the very least show increasing air flow with increasing engine RPM.
It should also be noted that disconnecting the MAF sensor will in many cases force the ECU into a "limp" mode where it substitutes preprogrammed values for the missing data and this will immediately change how the engine operates.
If I go outside and unplug the MAF sensor on my GV, the engine will immediately start to run so rich that the engine floods, the idle speed drops and the engine will stall unless I open the throttle - and it does this because the throttle plate does not admit enough air to allow it to burn the excess fuel.
On a gasoline engine, rpms are directly tied to the available air flow, add more fuel and it will not run faster.
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05 - 2.0 Suzuki Grand Vitara - JB420
15 - 2.4 Kia Sportage