Rough idle with forced induction

nomodsjk · 08-22-2014, 09:50 AM

I'm having the same issue! This didn't start until I replaced the passenger side throttle body. I was then instructed by R/T tuning that I needed to do a throttle body relearn but I was unable to because Nissan couldn't access my ecu because of the custom tune. Well since I live 3 hours away from R/T tuning they emailed me a manual relearn process which I had Nissan do because I received the email the same day the car was in for service. When I got the car back everything seemed fine until the first attempt to turn on the AC. As soon as I flipped the switch the car started this issue and has been like that ever since. I even took it all the way back to Lansdale PA (r/t) and of course the car wasn't doing it when I was there so they were unable to fix it but the car eventually did throw a code which was for a low idle. So it's my belief that when the car went through the manual relearn process the idle was set too low but r/t disagreed. All I'm sure of is everything was fine before the relearn and now it seems like it's going to stall out at low rpm's and runs really rich at times

jwick · 08-22-2014, 09:55 AM

Quote:

Originally Posted by nomodsjk

I'm having the same issue! This didn't start until I replaced the passenger side throttle body. I was then instructed by R/T tuning that I needed to do a throttle body relearn but I was unable to because Nissan couldn't access my ecu because of the custom tune. Well since I live 3 hours away from R/T tuning they emailed me a manual relearn process which I had Nissan do because I received the email the same day the car was in for service. When I got the car back everything seemed fine until the first attempt to turn on the AC. As soon as I flipped the switch the car started this issue and has been like that ever since. I even took it all the way back to Lansdale PA (r/t) and of course the car wasn't doing it when I was there so they were unable to fix it but the car eventually did throw a code which was for a low idle. So it's my belief that when the car went through the manual relearn process the idle was set too low but r/t disagreed. All I'm sure of is everything was fine before the relearn and now it seems like it's going to stall out at low rpm's and runs really rich at times

What kit are you running?

nomodsjk · 08-22-2014, 09:59 AM

Quote:

Originally Posted by jwick

What kit are you running?

I'm all stillen. Every performance part stillen makes for a 7at 370z is on my car. Also Vince at r/t told me to clean my filters and mafs so I did and that did nothing.

jwick · 08-22-2014, 10:26 AM

Quote:

Originally Posted by nomodsjk

I'm all stillen. Every performance part stillen makes for a 7at 370z is on my car. Also Vince at r/t told me to clean my filters and mafs so I did and that did nothing.

Wonder if the issues are similar.

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08-22-2014, 09:50 AM	#1 (permalink)
nomodsjk Premium Member Join Date: Apr 2014 Location: martinsburg wv Posts: 2,073 Drives: 2011 370z MB/7at Rep Power: 19962	I'm having the same issue! This didn't start until I replaced the passenger side throttle body. I was then instructed by R/T tuning that I needed to do a throttle body relearn but I was unable to because Nissan couldn't access my ecu because of the custom tune. Well since I live 3 hours away from R/T tuning they emailed me a manual relearn process which I had Nissan do because I received the email the same day the car was in for service. When I got the car back everything seemed fine until the first attempt to turn on the AC. As soon as I flipped the switch the car started this issue and has been like that ever since. I even took it all the way back to Lansdale PA (r/t) and of course the car wasn't doing it when I was there so they were unable to fix it but the car eventually did throw a code which was for a low idle. So it's my belief that when the car went through the manual relearn process the idle was set too low but r/t disagreed. All I'm sure of is everything was fine before the relearn and now it seems like it's going to stall out at low rpm's and runs really rich at times