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Why don't you post a few more details about your Z so we can start providing better answers for your querries? Has it always done this? How many miles on this Z? Any codes showing up?
 

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Discussion Starter #3
09 370Z accelerate sometimes by itself and is now start cutting out sometimes...i cleaned everything Round throttle body...and I putin new cam sensors and and mass sensors I ordered a new map sensor..i replace my OEM VACUUM SOLENOID VALVE SWITCH with a use one..i have some o2 sensors coming in now
 

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I did alot upgrade...like exhaust ..test pipe bigger injections..its alot more things im waiting on check engine light come back on after. I clean every I unplug my battery to See whats the problem...
 

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You're welcome. P0507 means the ECM is detecting an erratic idle. Here's some possible solutions from the FSM:
  1. Replace or clean the idle air valve.
  2. Repair a large intake air leak.
  3. Repair the charging system.
  4. Clean the throttle body.
  5. Replace the power steering pressure switch.
 

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Discussion Starter #9
Thanks for saying ....i change my map sensors, both pvc valve and both can shaft sensors now in just wanting for valve cover gasket to come and I let u know wuz up and how its running
 
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