Eveready959

I have been experiencing an intermittent issue with engine performance - engine will all of a sudden start misfiring and lose power with inability to run past 25 - 30 mph. If accelerator is pressed in attempt to increase speed, engine vibrates violently. When the engine is turned off and restarted, it runs normally for a period of time of a minimum of a few days - weeks. Dealership performed computer diagnosis and unable to identify any related codes or mechanical problems. They told me to just continue to drive until problem recurs and then bring it back during normal hours without turning off so they could attempt to pull a code without allowing computer to reset. Have been unable to reproduce during normal hours. Told by one dealership technician that it sounds like master air flow sensor. Receiving no CEL, or other error/warning prior to, during, or after occurrence. Please help! Thanks!

ANMVQ

iTrader: (13)

mileage on car? Mods? gas? Could be handful of things from. Needs plus to a TB relean?

auG37x

I'm sorry about what's you're experiencing. I had the same thing not on my G37 but on a Nissan Maxima I owned before. The symptoms were the same with a sudden loss of power and a oscillating rpm. It was effectively the airflow sensor that I changed with one from a scrap yard. All the problems were solved! Hope it helps... Wish you luck!

claudiohv

Yeah i had similar issues... car couldn't "breath" properly... got the mafs cleaned and its great now.