Hesitation in acceleration

Asked by Apr 29, 2016 at 07:51 PM about the 2005 Hyundai Tiburon SE

Question type: Maintenance & Repair

Error code P0170 and P0173 car hesitates
when trying to accelerate and when I first
start it and try to take off it dies down and
has no acceleration if I hold the pedal
stead it corrects it self after couple
seconds. Things I've replaced so far MAF,
IAC, purge valve any thoughts?

1 Answer

74,725

P0170 HYUNDAI - Fuel Trim Bank 1... Possible causes - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection... Dirty air filter, air filter housing or Mass Air Flow (MAF) sensor, or faulty MAF sensor are common causes for the P0170 code. Fuel injection system does not operate properly or the amount of mixture ratio compensation is not correct... Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) - Excessive Fuel Consumption... P0170 Hyundai Description-- With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the Malfunction Indicator Light (MIL) (2 trip detection logic).................P0173 HYUNDAI - Fuel Trim Bank 2... Possible causes - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection... When is the code detected? - Fuel injection system does not operate properly. - The amount of mixture ratio compensation is not correct

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