2011 V6 58k Miles Misfire/Shaking Engine? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

William.23 · 04-20-2018, 04:36 AM

URGENT-- URGENT-- URGENT!!!!! -- Only mods I have are --> Injen Long Tube/Catch Can

Hey all, so I was driving a few weeks ago and I did a little rev from 1500 - 2000k miles while driving. The car had already been heated up, etc.

But then, when I take a turn to start heading to my house. I feel the car, different. It started shaking pretty violently, So I pulled over to the side and turned it off. Check Engine Light came on.....

I popped the hood and checked for any leaks, or wires being loose/disconnected.

Everything looks fine, in that regard. So I go get a code scanner, I run the code and got P0301 (Which is Cylinder 1). So I switch Cylinder 1, Ignition Coil with that of 4 - Clear the code and turn the car on again. It immediately started shaking violently again. So I immediately turned it off....

The check engine light didn't come on that time. SO I leave the key in the ignition(off) and wait about 5-10 minutes. I turn the car on again and violent shaking -- Turn it off (Check Engine Light comes back on).

I try running the code -- and It is no longer reading ANY CODES. I would've probably thought it would read P0304 (Cylinder 4, since I moved Cyl 1 -> 4 & 4 -> 1.

I bought new Spark Plugs and Ignition Coils (All 6 for both).

My questions are:

Why isn't the code reading anymore?

Should I just replace all plugs/coils?

If the car starts shaking violently like that again, what could it be?

URGENTLY NEED HELP -- Renting a car...and it's $$$$$$.....

William.23 · 04-20-2018, 06:49 PM

Update!!

So I installed all new coils and plugs.

Started the car - Engine shook oddly (not worrysome) at start up. Went awat

After cold start at about 900rms going down it did a weird shake again . Went away.

Then I noticed the CEL light turned off. And then I sat with the car on for a few more seconds. Turned it off.

Is that normal, just reading new plugs and coils?

That's why it did those little weird shakes?

Thanks all, any and all help is greatly appreciated!!

captaincog · 04-29-2018, 02:50 PM

Does not sound normal. Get it checked since it might have a sticking valve and if that gets worse then you get what I had happen this week....my engine is blown. No more warning than yours..

And that is $7500 at my dealer to replace the engine.

William.23 · 08-09-2018, 03:54 PM

BUMP-

So I had replaced the Spark Plugs and the Ignition Coils and it fixed that problem. Was driving it around - Everything seemed/seems to be running how it used too, actually a little bit smoother on accel it felt like. However, I don't recall with the codes..I think I had cleared it - then the CEL came on for about 10 seconds after I installed all the new stuff, then it went away. Checked codes nothing popped up.

Anways, I've run into another issue now (Doing a new thread about it)

04-20-2018, 04:36 AM	#1
William.23 Drives: 2011 Summit White. Join Date: Mar 2011 Location: SO-California Posts: 525 View My Garage	2011 V6 58k Miles Misfire/Shaking Engine? URGENT-- URGENT-- URGENT!!!!! -- Only mods I have are --> Injen Long Tube/Catch Can Hey all, so I was driving a few weeks ago and I did a little rev from 1500 - 2000k miles while driving. The car had already been heated up, etc. But then, when I take a turn to start heading to my house. I feel the car, different. It started shaking pretty violently, So I pulled over to the side and turned it off. Check Engine Light came on..... I popped the hood and checked for any leaks, or wires being loose/disconnected. Everything looks fine, in that regard. So I go get a code scanner, I run the code and got P0301 (Which is Cylinder 1). So I switch Cylinder 1, Ignition Coil with that of 4 - Clear the code and turn the car on again. It immediately started shaking violently again. So I immediately turned it off.... The check engine light didn't come on that time. SO I leave the key in the ignition(off) and wait about 5-10 minutes. I turn the car on again and violent shaking -- Turn it off (Check Engine Light comes back on). I try running the code -- and It is no longer reading ANY CODES. I would've probably thought it would read P0304 (Cylinder 4, since I moved Cyl 1 -> 4 & 4 -> 1. I bought new Spark Plugs and Ignition Coils (All 6 for both). My questions are: Why isn't the code reading anymore? Should I just replace all plugs/coils? If the car starts shaking violently like that again, what could it be? URGENTLY NEED HELP -- Renting a car...and it's $$$$$$..... Last edited by William.23; 04-20-2018 at 04:47 AM.

04-29-2018, 02:50 PM	#3
captaincog Drives: 1971 350RS/SS 4sp Join Date: Feb 2013 Location: Rialto Posts: 166	Does not sound normal. Get it checked since it might have a sticking valve and if that gets worse then you get what I had happen this week....my engine is blown. No more warning than yours.. And that is $7500 at my dealer to replace the engine. __________________ Camaros currently owned: 1 2013 1LS 6speed.... Blue Ray Metallic now gone and still have my first Camaro made 42 years before: 1971 RS/SS 350 4 speed Teal Green

04-20-2018, 06:49 PM	#2
William.23 Drives: 2011 Summit White. Join Date: Mar 2011 Location: SO-California Posts: 525 View My Garage	Update!! So I installed all new coils and plugs. Started the car - Engine shook oddly (not worrysome) at start up. Went awat After cold start at about 900rms going down it did a weird shake again . Went away. Then I noticed the CEL light turned off. And then I sat with the car on for a few more seconds. Turned it off. Is that normal, just reading new plugs and coils? That's why it did those little weird shakes? Thanks all, any and all help is greatly appreciated!!

08-09-2018, 03:54 PM	#4
William.23 Drives: 2011 Summit White. Join Date: Mar 2011 Location: SO-California Posts: 525 View My Garage	BUMP- So I had replaced the Spark Plugs and the Ignition Coils and it fixed that problem. Was driving it around - Everything seemed/seems to be running how it used too, actually a little bit smoother on accel it felt like. However, I don't recall with the codes..I think I had cleared it - then the CEL came on for about 10 seconds after I installed all the new stuff, then it went away. Checked codes nothing popped up. Anways, I've run into another issue now (Doing a new thread about it)