Check Engine Light +

Nevers · 02-19-2010, 04:30 PM

So when I was going to leave work I noticed that the check engine light was on as soon as I started the car. Worried me a little bit but nothing to get to worked up about.

As I was driving home I noticed that the gear revving felt a little wierd. There was some lag when trying to accelerate. Also when I was sitting in neutral I would rev it up to say 4k RPMs, release the gas and the RPMs would come down normally and it would then suddenly stop at 1500 then slowly drop down and idle at 1100.

Is 1100 a normal idle for everyone else?

I'm not sure if this means much I just feel like something is wrong. Any suggestions would be greatly appreciated. Only mod I have is the Stillen Gen3s.

-Nevers

midget · 02-19-2010, 05:10 PM

Mine did the exact same thing....the gas cap was loose.

6spd · 02-19-2010, 08:04 PM

Quote:

Originally Posted by midget

Mine did the exact same thing....the gas cap was loose.

Wow, really?! I turn off the engine light on cars all day at my shop for having a loose gas cap, but never has it caused a running problem

I'm glad this thread was here to enlighten me!

Nevers · 02-19-2010, 08:07 PM

I tightened the gas cap, filled the tank, drove it probably 5 miles and the light is still on. Hopefully it will go off after a little more driving

soCo · 02-19-2010, 08:30 PM

Could always take it to autozone if it remains on and use the scanner to get the code. (it's free)

PapoZalsa · 02-19-2010, 08:34 PM

Quote:

Originally Posted by soCo

Could always take it to autozone if it remains on and use the scanner to get the code. (it's free)

Just take to the dealer, is under warranty. Unless he has some mods that are creating the check engine light...then that is different.

Vegasboricua · 02-19-2010, 05:16 PM

Yeah this happend with my sentra last year. Tighten up your gas cap.

PapoZalsa · 02-19-2010, 07:05 PM

Quote:

Originally Posted by Nevers

So when I was going to leave work I noticed that the check engine light was on as soon as I started the car. Worried me a little bit but nothing to get to worked up about.

As I was driving home I noticed that the gear revving felt a little wierd. There was some lag when trying to accelerate. Also when I was sitting in neutral I would rev it up to say 4k RPMs, release the gas and the RPMs would come down normally and it would then suddenly stop at 1500 then slowly drop down and idle at 1100.

Is 1100 a normal idle for everyone else?

I'm not sure if this means much I just feel like something is wrong. Any suggestions would be greatly appreciated. Only mod I have is the Stillen Gen3s.

-Nevers

Normal idle would be around 800 to 900 rpm without mods.

Josh@STILLEN · 02-19-2010, 10:10 PM

You'd be the first..

You also might look into a cheap code reader.. with the range they can read these days, you'll probably end up using it more than you think.. or find a buddy with one.

That being said, you could also check the installation.. if you somehow had a loose silicone connection or something, and bringing in unmetered air, that would definitely do it.

Is it a check engine light (CEL) or a service engine soon (SES) light?

Pharmacist · 02-20-2010, 11:39 AM

OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected

P0300 - Check Engine Light Diagnostic Trouble Code Description

Basically it seems that almost anything can trigger that code. I'd say just reset it and see what happens

soCo · 02-20-2010, 01:50 PM

Quote:

Originally Posted by Pharmacist

Basically it seems that almost anything can trigger that code. I'd say just reset it and see what happens

^^^ There are a lot of things that can make that code throw. If it comes back take it to the dealership.

barncobob · 02-25-2016, 10:50 AM

maybe try the unhooking the battery trick, cures alot of ailments

Chuck33079 · 02-25-2016, 11:29 AM

Quote:

Originally Posted by barncobob

maybe try the unhooking the battery trick, cures alot of ailments

It'll clear the code, but if the code is indicative of a larger issue you won't know what's going on with the car. Get the code scanner and figure out what you're dealing with, then clear it.

SouthArk370Z · 02-25-2016, 11:47 AM

Quote:

Originally Posted by barncobob

maybe try the unhooking the battery trick, cures alot of ailments

Quote:

Originally Posted by Chuck33079

It'll clear the code, but if the code is indicative of a larger issue you won't know what's going on with the car. Get the code scanner and figure out what you're dealing with, then clear it.

Killing the power to the ECM is what I would consider an all-else-has-failed option. As per Chuck33079, any DTCs will be cleared, plus, the ECM will have to relearn the engine and the emissions system will not pass until you have made several trips.

It doesn't hurt anything, so give it a try if you like. But grab the DTCs before you do.

Nevers · 03-02-2010, 09:59 AM

**** so I reset it back on the 20th, and it came back today this time p0305, Cylinder 5 misfire! WTF!

Anyway I have an appt to take it in tomorrow bright and early to the dealership, any advice or words of what to expect from tomorrow? What should or shouldnt I do?

Thanks

02-19-2010, 04:30 PM	#1 (permalink)
Nevers Base Member Join Date: Jul 2009 Location: Virginia Age: 38 Posts: 32 Drives: 2015 370z Nismo Tech Rep Power: 16	Check Engine Light + So when I was going to leave work I noticed that the check engine light was on as soon as I started the car. Worried me a little bit but nothing to get to worked up about. As I was driving home I noticed that the gear revving felt a little wierd. There was some lag when trying to accelerate. Also when I was sitting in neutral I would rev it up to say 4k RPMs, release the gas and the RPMs would come down normally and it would then suddenly stop at 1500 then slowly drop down and idle at 1100. Is 1100 a normal idle for everyone else? I'm not sure if this means much I just feel like something is wrong. Any suggestions would be greatly appreciated. Only mod I have is the Stillen Gen3s. -Nevers

02-19-2010, 05:16 PM	#7 (permalink)
Vegasboricua Track Member Join Date: Jan 2010 Location: North Las Vegas Age: 37 Posts: 697 Drives: 10 370Z PW M6 BASE Rep Power: 598	Yeah this happend with my sentra last year. Tighten up your gas cap. __________________ // K&N Drop Ins // Illuminated Kick Plates // 35% Tints // [ Facebook \| Twitter ]

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02-19-2010, 05:10 PM	#2 (permalink)
midget Base Member Join Date: Jun 2009 Location: Dover, DE Posts: 25 Drives: 370z Rep Power: 16	Mine did the exact same thing....the gas cap was loose.

02-19-2010, 08:07 PM	#4 (permalink)
Nevers Base Member Join Date: Jul 2009 Location: Virginia Age: 38 Posts: 32 Drives: 2015 370z Nismo Tech Rep Power: 16	I tightened the gas cap, filled the tank, drove it probably 5 miles and the light is still on. Hopefully it will go off after a little more driving

02-19-2010, 08:30 PM	#5 (permalink)
soCo Base Member Join Date: Jan 2010 Location: Philadelphia Age: 37 Posts: 146 Drives: 370z soon hopefully Rep Power: 16	Could always take it to autozone if it remains on and use the scanner to get the code. (it's free)

02-19-2010, 10:10 PM	#9 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 534	You'd be the first.. You also might look into a cheap code reader.. with the range they can read these days, you'll probably end up using it more than you think.. or find a buddy with one. That being said, you could also check the installation.. if you somehow had a loose silicone connection or something, and bringing in unmetered air, that would definitely do it. Is it a check engine light (CEL) or a service engine soon (SES) light?

02-20-2010, 11:39 AM	#10 (permalink)
Pharmacist A True Z Fanatic Join Date: May 2009 Location: Toronto, Ontario Posts: 1,249 Drives: 09 370z Sport 6MT Rep Power: 18	OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected P0300 - Check Engine Light Diagnostic Trouble Code Description Basically it seems that almost anything can trigger that code. I'd say just reset it and see what happens

02-25-2016, 10:50 AM	#12 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	maybe try the unhooking the battery trick, cures alot of ailments

03-02-2010, 09:59 AM	#15 (permalink)
Nevers Base Member Join Date: Jul 2009 Location: Virginia Age: 38 Posts: 32 Drives: 2015 370z Nismo Tech Rep Power: 16	**** so I reset it back on the 20th, and it came back today this time p0305, Cylinder 5 misfire! WTF! Anyway I have an appt to take it in tomorrow bright and early to the dealership, any advice or words of what to expect from tomorrow? What should or shouldnt I do? Thanks