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Q: engine surges after engine warms up jerky very sporadic on 1999 Buick Park Avenue

engine shuts off at stop signs or when waiting to turn. Have been told might be a hose vacuum leak?
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Sounds like a Mass air flow sensor problem. Try tapping on the sensor located in the top of your throttle body with a screw driver handle and see if the engine starts quacking out.
would there be any codes in the computer referencing mas air flow sensor. The codes I'm getting are for torque converter in the transmission and no engine light either. Would love to try to replace maf sensor
but don't want to waste the money. But would rather spend 200.00 than 2 thousand.
More times than not a vacuum leak will increase your rpm's. Not always will the maf trigger a light. I have had many instances of a problem maf with no cel. If your torque convertor stays locked up, a stall will occur, the same as not pushing in a clutch with a manual trans. If you decide to put a maf in, spend the xtra bucks and get a new rather than reman. I have had a lot of bad luck with remans.
Tapped the maf with screw handle no change in the engine what so ever i'am assuming that's what quacking out means. please let me know what u think about that situation. Is no change better or worse than a change in the engine noise? Thanks. Waiting for your answer.

CRGIBERT mass air flow sensor fixed my problem thank you very much appreciate your help immensely.
Is it worse in damp/rainy weather. Mine did the same. Had to replace intake manifold. Take a spray bottle of water while the engine is running and spray around the base of the intake manifold. If troubles worsens, then that could be your problem
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