Unstable engine

Hello friends, someone could help me Hyundai Excel Model 92 Korean injected, the engine when the minimum is launched and lowers erratic mind as it warms down but is consuming too much fuel already performs injectors cleaning but the problem persists

That you must apparently change the oxygen and MAP sensor, they are the sensors that regulate the passage of fuel according to working conditions.

Clean or change according to the IAC valve (IDLE AIR CONTROL) REGULATORY OF REGLANDS ..... COMMENT RESULTS .... DO NOT FORGET VALUE ANSWERS ....

Hello, thank you very much for your help but this vehicle does not have this IAC system has an Isc Servo Isc and it was already replaced

Good Edgar, I answer you from Costa Rica and I tell you that I have a navel here because everyone has it ... hehe. Yours is a pretty capricious car and I have seen that kind of behavior many times. In general (although not always) it is because the rubber tube that connects the air flow with the admission is perforated or the clamps of the same are not tight and then the ECU does not recognize 100 % of the air that really enters the engine and for this reason it is devastating. I hope just that ... luck