My 2005 Mazda 3, when I'm in neutral the idling jumps around a lot making the engine rev up and down, its running real rich and using up a lot of gas, and my check engine light is on. Could it be a fuel injection problem or a vacuum leak? Please I need help! Thank You!
I honestly think that it is your mass airflow sensor that either went bad or needs cleaning. Auto Zone can run a computer test on your car and diagnose your problem, and if so, they carry a special can of Mass Airflow Cleaner put out by CVR that cost around 6 or 7 bucks. The mass airflow sensor determines how rich to make the gas. This would cause the car to hesitate or jump. Hope this helps. Please leave feedback!
Has the battery been disconnected recently. The mazda 3 has a problem where after battery replacement the engine rev up down and the car will stall out . the CAN needs to be reset because it needs to relearn. To reset you need to disconnect both battery terminals touch them together and pump the brake pedal (to ensure to drain any memery) reconnect the battery terminals start car and let idle for 20 min.
check for dirty fuel filter at engine,,,also you can try one more additive...SEAFOAM...nine bucks a can...add to your gas tank, the trhottle body...follow direstion on the can....don't be alarmed that the engine might smoke...it is temporary and usually fixes fuel problems caused by dirt of carcon build ups....houpe you can use this info
1,120 views
Usually answered in minutes!
×