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Ask Derek Werner Your Own Question
Derek Werner
Derek Werner, ASE Certified Technician
Category: Kia
Satisfied Customers: 135
Experience:  ASE Master Technician, L1 Advanced Level Specialist
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Why does my kia spectra start ,die restart and run rough?

Customer Question

why does my kia spectra start ,die restart and run rough?
Submitted: 1 year ago.
Category: Kia
Expert:  Derek Werner replied 1 year ago.

Hello and welcome!

Have you pulled fault codes form the ecm?

this will give a good indication of were to start fault tracing.

A intake air leak will cause poor running, also a defective or dirty mass air flow sensor. try cleaning the maf and inspecting any lines for being disconnected or split. any kind of air leak between the maff and throttle body will cause the engine to run poor.