Engine Shuts off when putting Drive or Reverse [Help]

Faris · 10-18-2020, 05:23 PM

Hello everyone,

I own a 370z 2014 Roadster, I have an issue where if I changed the gear while stopping (while still cold) the RPM will drop down (400-500) and the car will vibrate and goes right back into position (600-700 RPM).

If the car is warmed up the engine will shut off when putting into drive or reverse.

I've sent the car to the dealership and they fully examined the car and told me there was "no code" and they didnt find what's the issue.

I searched online and there's like alot of reasons like torque converter, vacuum leaks, throttle position sensor, crankshaft position, transmission oil situation, fuel pump/injectors, spark plugs(misfire) and alot more.

Anyone had the same issue on their 370z?

UPDATE: I went for a quick ride today after I warmed up the car, the engine didnt shut off when changing gears just a little vibration due to RPM drop to 400-500.
Once I accelerate I can feel that the car jerking.
Could it be a vacuum leak? and how do I diagnose that?

PLUS: My car has straight pipes, does this affect anything? I had them for more than 2 years

Thank you,
appreciated.

DOOMMONKEY777 · 10-19-2020, 06:38 AM

Clean your throttle bodies.

Faris · 10-19-2020, 09:39 AM

Quote:

Originally Posted by DOOMMONKEY777

Clean your throttle bodies.

They are clean, I double checked them

SouthArk370Z · 10-19-2020, 02:13 PM

MAFs can cause problems when they get dirty. Cleaning is a fast and easy job - a can of MAF cleaner, a screw/nut driver, and 15-20 minutes.

Faris · 10-22-2020, 02:42 AM

Quote:

Originally Posted by SouthArk370Z

MAFs can cause problems when they get dirty. Cleaning is a fast and easy job - a can of MAF cleaner, a screw/nut driver, and 15-20 minutes.

I've cleaned them yesterday and the idle went up to 1000 and the vibration disappeared. After I did the relearn procedure for idling the RPM went back to normal the vibration came back when changing from P/N to R/D in gear.

So the issue is still there.

Faris · 10-23-2020, 07:38 AM

Just a quick update, I went for a test drive in the car and it jerks like crazy and now theres a clicking sound whenever I put D or R from the engine bay.

Faris · 11-10-2020, 08:31 AM

Its the torque converter, incase it happens to someone.

Case Closed

10-18-2020, 05:23 PM	#1 (permalink)
Faris Base Member Join Date: Dec 2018 Location: Riyadh Posts: 5 Drives: 370z 2014 Roadster A Rep Power: 6	Engine Shuts off when putting Drive or Reverse [Help] Hello everyone, I own a 370z 2014 Roadster, I have an issue where if I changed the gear while stopping (while still cold) the RPM will drop down (400-500) and the car will vibrate and goes right back into position (600-700 RPM). If the car is warmed up the engine will shut off when putting into drive or reverse. I've sent the car to the dealership and they fully examined the car and told me there was "no code" and they didnt find what's the issue. I searched online and there's like alot of reasons like torque converter, vacuum leaks, throttle position sensor, crankshaft position, transmission oil situation, fuel pump/injectors, spark plugs(misfire) and alot more. Anyone had the same issue on their 370z? UPDATE: I went for a quick ride today after I warmed up the car, the engine didnt shut off when changing gears just a little vibration due to RPM drop to 400-500. Once I accelerate I can feel that the car jerking. Could it be a vacuum leak? and how do I diagnose that? PLUS: My car has straight pipes, does this affect anything? I had them for more than 2 years Thank you, appreciated. Last edited by Faris; 10-22-2020 at 02:58 AM.

10-19-2020, 06:38 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	Clean your throttle bodies. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

10-19-2020, 02:13 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	MAFs can cause problems when they get dirty. Cleaning is a fast and easy job - a can of MAF cleaner, a screw/nut driver, and 15-20 minutes. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

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10-23-2020, 07:38 AM	#6 (permalink)
Faris Base Member Join Date: Dec 2018 Location: Riyadh Posts: 5 Drives: 370z 2014 Roadster A Rep Power: 6	Just a quick update, I went for a test drive in the car and it jerks like crazy and now theres a clicking sound whenever I put D or R from the engine bay.

11-10-2020, 08:31 AM	#7 (permalink)
Faris Base Member Join Date: Dec 2018 Location: Riyadh Posts: 5 Drives: 370z 2014 Roadster A Rep Power: 6	Its the torque converter, incase it happens to someone. Case Closed