[size=16px]Hey everyone I have a g35 2004 automatic sometimes after I press the gas padal the [/size]rpm[size=16px] suddenly drops then returns to where it normal would be.. It was happening alot then I changed the throttle body and the system occurs less but still happen... what could it be? Should I clean the maf sensor and check for vacuum leaks...[/size]
[size=16px]and the drop of [/size]rpm[size=16px] only happens when i am in drive never in park[/size]

 

Is if just the needle or the actual engine RPM?

If its actual engine RPM, I would start by replacing the crankshaft position sensor.

 

I think it's just the needle because the motor sounds fine
and I change the crank sensor a few years ago

 

but I will change it again just to be sure

 

I just change my crankshaft position sensor but the rpm still does the same thing but it's happening less and not as drustic the rpm drop... what else can i do

 

this is not my car but this is what is happening to my car and idk why?
https://youtube.com/shorts/Pam9vkzVMKs?feature=share

 

Primary culprit is a vacuum leak.