Hey guys. I own an 08 Infiniti G35 Sedan Base. I recently had the throttle body and intake pendulum sprayed and cleaned out when i went into service for the water pump. Once i received the car back it ran perfectly fine until i noticed when i come to a stop say a light, the rpm would idle at 6500 then drop say 500rpm for a second then pick back up. Now when this symptom happens the car does shutter for a second like the car is about the stall. I does this also if I'm sitting idle for along time it will do it once or twice in a 5min sit. It doesn't happen all the time but enough time to notice the issue. I would appreciate any advice into the issue. Thank you.

 

I know this is not much help, but many of our cars do that, including my own. I think its normal. There are plenty posts that say the same thing. I just had mine cleaned, tech said it was dirty even though I only had like 46000mi at the time (currently 48000) and it just started to come back. Interestingly enough, it got better after I put on my cat-back. The car still does the same thing but its felt less.

 

Overtime i havent noticed it as much but still happenes time to time.. But i even checked with infiniti and perfect idle is 6500 and + or - 500 is still considered normal operation.

 

For the record: You got an extra zero in there.

 

thanks i just noticed that too, lol.

 

The vehicle has been serviced recently and they couldn't replicate the issue. So i did routine maintenance and everything is good so far.