Sudden power loss

SouthArk370Z · 03-31-2013, 06:50 PM

The first thing to do is see what the car thinks is so wrong that it needs to light up the CEL. Get an ODB scanner and check the code(s). New cars can be amazingly good at diagnosing themselves.

With that info and what Baer finds out about what can trip limp mode, you may have your answer.

Honesty · 03-31-2013, 07:12 PM

I'd think your CEL is on because the secondary O2 sensor is picking up the lack of a cat, but that won't engage limp mode. Maybe you're having an unrelated problem with your primary O2 sensor caused by bumping it or damaging it on the pipe installation. Could even be hot exhaust gas is leaking and burned the wiring. Check your MAFs in your CAIs to see they're not dirty or damaged or anything.

How's your oil level? You sure it isn't running low or that there isn't a leak somewhere that caused oil levels to drop?

Honesty · 03-31-2013, 07:19 PM

There's a tire pressure sensor in the car's throttle bodies?

Osiris · 03-31-2013, 07:21 PM

Quote:

Originally Posted by Honesty

There's a tire pressure sensor in the car's throttle bodies?

sorry, i shouldn't use acronyms. TPS = Throttle Position Sensor

SouthArk370Z · 03-31-2013, 07:25 PM

Quote:

Originally Posted by Honesty

There's a tire pressure sensor in the car's throttle bodies?

TPMS = Tire Pressure Monitoring System
TPS = Throttle Position Sensor
TMDA = Too Many Damn Acronyms

Yutnaka · 03-31-2013, 07:28 PM

The only thing I have is the CEL, which i've had for a few days since my test pipe install. I am thinking its the throttle body or the crankshaft position sensor.

Baer383 · 03-31-2013, 07:32 PM

Quote:

Originally Posted by Yutnaka

The only thing I have is the CEL, which i've had for a few days since my test pipe install. I am thinking its the throttle body or the crankshaft position sensor.

So far the most likely cause I've seen is throttle body's unsynchronized.

Yutnaka · 03-31-2013, 07:35 PM

Quote:

Originally Posted by Baer383

So far the most likely cause I've seen is throttle body's unsynchronized.

Thats sounds crazy.

SouthArk370Z · 03-31-2013, 07:38 PM

Quote:

Originally Posted by Yutnaka

Thats sounds crazy.

It may sound crazy (I have no idea what it means), but Baer has enough rep (not just rep points, but what I have observed) that it behooves one to pay attention to him.

Baer383 · 03-31-2013, 07:40 PM

Quote:

Originally Posted by Yutnaka

Thats sounds crazy.

It's not it happenes more than you think!!!

P0122 Throttle position sensor
P0123
P0222
P0223
P0227
P0228
P1239
P2132
P2133
P2135

The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.

Baer383 · 03-31-2013, 07:45 PM

the things I'm posting are what causes limp mode.

(relating to you)

P0102 Mass air flow sensor circuit
P0103
P010C
P010D

Engine speed will not rise more than 2,400 rpm due to the fuel cut.

SouthArk370Z · 03-31-2013, 07:36 PM

Quote:

Originally Posted by Yutnaka

The only thing I have is the CEL, which i've had for a few days since my test pipe install. I am thinking its the throttle body or the crankshaft position sensor.

Possibilities, but the O2 Sensors and MAFs are more likely candidates.

Get an OBD scanner and find out what the car thinks is wrong. Right now, everybody is just guessing. Some very good guesses, but guesses none the less.

/Angelo350Z/ · 03-31-2013, 07:37 PM

I have a '13 with a manual transmission and this happened to me once while accelerating from a red light. Same thing happened; there was no power and the engine wouldn't rev past a certain point. I thought it was overheating but it was right at 180. I drove it in limp mode until I reached my destination and turned it off. 30 mins later everything was fine.

Yutnaka · 03-31-2013, 08:20 PM

The highest rpm that i can go to is 3500. My idle is just below or right at 1500. Warranty should cover this right? I am still under warranty...the problem is getting my car there.

DEpointfive0 · 03-31-2013, 08:27 PM

Quote:

Originally Posted by Yutnaka

The highest rpm that i can go to is 3500. My idle is just below or right at 1500. Warranty should cover this right? I am still under warranty...the problem is getting my car there.

JEEZUS, your idle is high
You can have them tow it on their dime

03-31-2013, 06:50 PM	#1 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	The first thing to do is see what the car thinks is so wrong that it needs to light up the CEL. Get an ODB scanner and check the code(s). New cars can be amazingly good at diagnosing themselves. With that info and what Baer finds out about what can trip limp mode, you may have your answer. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

03-31-2013, 07:12 PM	#2 (permalink)
Honesty Base Member Join Date: Mar 2012 Location: Pittsburgh, PA Posts: 61 Drives: 370Z Rep Power: 14	I'd think your CEL is on because the secondary O2 sensor is picking up the lack of a cat, but that won't engage limp mode. Maybe you're having an unrelated problem with your primary O2 sensor caused by bumping it or damaging it on the pipe installation. Could even be hot exhaust gas is leaking and burned the wiring. Check your MAFs in your CAIs to see they're not dirty or damaged or anything. How's your oil level? You sure it isn't running low or that there isn't a leak somewhere that caused oil levels to drop? __________________

03-31-2013, 07:19 PM	#3 (permalink)
Honesty Base Member Join Date: Mar 2012 Location: Pittsburgh, PA Posts: 61 Drives: 370Z Rep Power: 14	There's a tire pressure sensor in the car's throttle bodies? __________________

03-31-2013, 07:28 PM	#6 (permalink)
Yutnaka Base Member Join Date: Apr 2011 Location: Columbus, GA Posts: 212 Drives: 2011 370z 7at GM Rep Power: 14	The only thing I have is the CEL, which i've had for a few days since my test pipe install. I am thinking its the throttle body or the crankshaft position sensor. __________________ Z1 Test Pipes, AAM S-Line Midpipe, Nismo Axleback, Takeda CAI, JDM fog light, Avant Garde M310 matte black, Tein springs, uprev 310whp-SOLD!

03-31-2013, 07:45 PM	#11 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	the things I'm posting are what causes limp mode. (relating to you) P0102 Mass air flow sensor circuit P0103 P010C P010D Engine speed will not rise more than 2,400 rpm due to the fuel cut. __________________ 2013 ZL1 754 rwhp 747 rwtq

03-31-2013, 07:37 PM	#13 (permalink)
/Angelo350Z/ A True Z Fanatic Join Date: Feb 2013 Location: Germany Posts: 2,230 Drives: Z34 \| MK7 \| F82 Rep Power: 3661	I have a '13 with a manual transmission and this happened to me once while accelerating from a red light. Same thing happened; there was no power and the engine wouldn't rev past a certain point. I thought it was overheating but it was right at 180. I drove it in limp mode until I reached my destination and turned it off. 30 mins later everything was fine. __________________ 2013 MB NISSAN 370Z SPORT

03-31-2013, 08:20 PM	#14 (permalink)
Yutnaka Base Member Join Date: Apr 2011 Location: Columbus, GA Posts: 212 Drives: 2011 370z 7at GM Rep Power: 14	The highest rpm that i can go to is 3500. My idle is just below or right at 1500. Warranty should cover this right? I am still under warranty...the problem is getting my car there. __________________ Z1 Test Pipes, AAM S-Line Midpipe, Nismo Axleback, Takeda CAI, JDM fog light, Avant Garde M310 matte black, Tein springs, uprev 310whp-SOLD!

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