Sudden power loss

Baer383 · 03-31-2013, 03:54 PM

Quote:

Originally Posted by Yutnaka

Do you think a tune will fix it? I didnt think that with the mods I have in my sig will require a tune.

No your mods are fine (as long as installed properly)

Quote:

Originally Posted by Yutnaka

Once it goes into 4th it feels like its going to slip, but it goes to 4th. But then it starts to do the Limp modish thing where it pulls timing and it has no power.

The engine can go into limp mode for allot of different reasons I'll have to take a look at the shop manual to see if anything stands out to me.

Yutnaka · 03-31-2013, 04:09 PM

Quote:

Originally Posted by Baer383

No your mods are fine (as long as installed properly)

The engine can go into limp mode for allot of different reasons I'll have to take a look at the shop manual to see if anything stands out to me.

Thanks man. I am going to drop it off at the dealership to see if they can fix it tomorrow.

DEpointfive0 · 03-31-2013, 04:34 PM

Quote:

Originally Posted by Yutnaka

Do you think a tune will fix it? I didnt think that with the mods I have in my sig will require a tune.

Quote:

Originally Posted by Yutnaka

Once it goes into 4th it feels like its going to slip, but it goes to 4th. But then it starts to do the Limp modish thing where it pulls timing and it has no power.

Quote:

Originally Posted by Baer383

No your mods are fine (as long as installed properly)

The engine can go into limp mode for allot of different reasons I'll have to take a look at the shop manual to see if anything stands out to me.

You don't need a tune

50MPH UPHILL in 4th, the car won't pull anyways...

VI-DE-O!!! VI-DE-O!!!

DEpointfive0 · 03-31-2013, 04:35 PM

Oh, try driving in D up the same hill?

Yutnaka · 03-31-2013, 04:45 PM

Yeah i wish i couldve video it. Its terrifiying when you're going uphill in D or even in 4th Flooring it and wont go past 3500. Its a gentle hill and I slow down to 40mph...at the top and I am flooring it. It wont even down shift in D to the proper gear when it happens.

Baer383 · 03-31-2013, 04:48 PM

Quote:

Originally Posted by Yutnaka

Yeah i wish i couldve video it. Its terrifiying when you're going uphill in D or even in 4th Flooring it and wont go past 3500. Its a gentle hill and I slow down to 40mph...at the top and I am flooring it. It wont even down shift in D to the proper gear when it happens.

That's limp mode I'm looking into it.

DEpointfive0 · 03-31-2013, 05:09 PM

Quote:

Originally Posted by Baer383

That's limp mode I'm looking into it.

I don't think so...

Quote:

Originally Posted by Yutnaka

Yeah i wish i couldve video it. Its terrifiying when you're going uphill in D or even in 4th Flooring it and wont go past 3500. Its a gentle hill and I slow down to 40mph...at the top and I am flooring it. It wont even down shift in D to the proper gear when it happens.

You've got conflicting statements...
40 in 4th, no wonder it won't pull.

If you're sure it's IN D and it won't downshift by itself and it's dying, it's either the throttle body or maybe fuel pump

Baer383 · 03-31-2013, 05:11 PM

If he won't go over 3500 rpm then it is limp lode.

Yutnaka · 03-31-2013, 05:14 PM

4th in an automatic pulls very hard. Maybe in a manual it wont pull as hard.

DEpointfive0 · 03-31-2013, 05:52 PM

Quote:

Originally Posted by Yutnaka

4th in an automatic pulls very hard. Maybe in a manual it wont pull as hard.

I have the 7AT too, I wouldn't describe it as HARD to be honest...
And if your coolant isn't too hot and the oil isn't too hot... I don't know what is causing your problem if it TRULY is limp mode...

How do you KNOW your CEL is ONLY for the TPs?

Yutnaka · 03-31-2013, 06:04 PM

I didnt have a CEL before i got my Test pipes installed. The CEL cam on the day after the install so most likely it will be the test pipes.

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.

SouthArk370Z · 03-31-2013, 06:51 PM

Quote:

Originally Posted by Baer383

... The engine can go into limp mode for allot of different reasons I'll have to take a look at the shop manual to see if anything stands out to me.

Please post your results. Knowing what conditions can trigger limp mode could be very valuable when troubleshooting.

Yutnaka · 03-31-2013, 07:00 PM

Quote:

Originally Posted by SouthArk370Z

Please post your results. Knowing what conditions can trigger limp mode could be very valuable when troubleshooting.

I will be making a trip to the dealership to see what is going on. I will keep you all updated. I would hate for people to experience this.

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?

03-31-2013, 04:35 PM	#19 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	Oh, try driving in D up the same hill? __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

03-31-2013, 04:45 PM	#20 (permalink)
Yutnaka Base Member Join Date: Apr 2011 Location: Columbus, GA Posts: 212 Drives: 2011 370z 7at GM Rep Power: 14	Yeah i wish i couldve video it. Its terrifiying when you're going uphill in D or even in 4th Flooring it and wont go past 3500. Its a gentle hill and I slow down to 40mph...at the top and I am flooring it. It wont even down shift in D to the proper gear when it happens. __________________ 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, 05:11 PM	#23 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 29	If he won't go over 3500 rpm then it is limp lode. __________________ 2013 ZL1 754 rwhp 747 rwtq

03-31-2013, 05:14 PM	#24 (permalink)
Yutnaka Base Member Join Date: Apr 2011 Location: Columbus, GA Posts: 212 Drives: 2011 370z 7at GM Rep Power: 14	4th in an automatic pulls very hard. Maybe in a manual it wont pull as hard. __________________ 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, 06:04 PM	#26 (permalink)
Yutnaka Base Member Join Date: Apr 2011 Location: Columbus, GA Posts: 212 Drives: 2011 370z 7at GM Rep Power: 14	I didnt have a CEL before i got my Test pipes installed. The CEL cam on the day after the install so most likely it will be the test pipes. __________________ 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, 06:50 PM	#27 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	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	#30 (permalink)
Honesty Base Member Join Date: Mar 2012 Location: Pittsburgh, PA Posts: 61 Drives: 370Z Rep Power: 13	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? __________________

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