Car studders at WOT at 3.5k rpms

ttamq · 03-03-2023, 08:56 PM

Hello my fellow Z friends,

I've recently bought a 370Z with a blown motor and replaced it. When driving the car normal everything is fine.
When I'm in 2nd or 3rd gear and I floor the gas pedal the car starts to studder and choke almost as if traction control is kicking on. This happens at about 3.5k rpms. No CEL. Has anyone had similar issues or could point me in the right direction into where to start? I would much appreciate the help. TIA.

DOOMMONKEY777 · 03-04-2023, 03:45 AM

its normal 4 non tuned

ttamq · 03-04-2023, 08:08 AM

The car has been previously tuned before the engine incident.

Tractionless · 03-04-2023, 11:09 AM

Start by checking your plastic fuel pump hat to see if it's broken.

ttamq · 03-04-2023, 11:31 AM

Ok, I was able to get ahold of a snapon scan tool and have the following codes:

C1108 left front wheel speed signal erratic
C1107 right front wheel speed signal erratic
C1109 battery voltage out of range
U1002 system CAN communication
C1130 engine 1 fuel cut system fault
U1000 CAN communication circuit

2011 Nismo#91 · 03-06-2023, 06:20 AM

C1109 battery voltage out of range.

Start with this issues, could be causing all the other electrical issues. Check the battery condition and clean the terminals and make sure they are making a good connection.

03-03-2023, 08:56 PM	#1 (permalink)
ttamq Base Member Join Date: Mar 2014 Location: delaware Posts: 5 Drives: 350z Rep Power: 11	Car studders at WOT at 3.5k rpms Hello my fellow Z friends, I've recently bought a 370Z with a blown motor and replaced it. When driving the car normal everything is fine. When I'm in 2nd or 3rd gear and I floor the gas pedal the car starts to studder and choke almost as if traction control is kicking on. This happens at about 3.5k rpms. No CEL. Has anyone had similar issues or could point me in the right direction into where to start? I would much appreciate the help. TIA.

03-04-2023, 03:45 AM	#2 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Oct 2010 Location: Crooklyn Posts: 1,008 Drives: 370Z 6psd-sport-pkg Rep Power: 21	its normal 4 non tuned __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

03-04-2023, 11:09 AM	#4 (permalink)
Tractionless A True Z Fanatic Join Date: Jan 2016 Location: Atlantic SE Posts: 1,322 Drives: '10 K23 ST 7AT Rep Power: 30525	Start by checking your plastic fuel pump hat to see if it's broken. __________________ Toys Not Tots

03-06-2023, 06:20 AM	#6 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,400 Drives: slowly Rep Power: 40569	C1109 battery voltage out of range. Start with this issues, could be causing all the other electrical issues. Check the battery condition and clean the terminals and make sure they are making a good connection. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

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03-04-2023, 08:08 AM	#3 (permalink)
ttamq Base Member Join Date: Mar 2014 Location: delaware Posts: 5 Drives: 350z Rep Power: 11	The car has been previously tuned before the engine incident.

03-04-2023, 11:31 AM	#5 (permalink)
ttamq Base Member Join Date: Mar 2014 Location: delaware Posts: 5 Drives: 350z Rep Power: 11	Ok, I was able to get ahold of a snapon scan tool and have the following codes: C1108 left front wheel speed signal erratic C1107 right front wheel speed signal erratic C1109 battery voltage out of range U1002 system CAN communication C1130 engine 1 fuel cut system fault U1000 CAN communication circuit