Rough idle/Running rich. HELP - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Patrick864 RS · 11-22-2019, 04:29 PM

A couple of weeks ago I was driving to the airport, going about 80 or so on the interstate, and all of a sudden my car started to hesitate and bog down. Went down to about 50 before it snapped back normal and ran correctly. Not wanting to ruin my trip, I figured I would worry about it after. So of course when I get back and go to crank up the car would start right up...and then would roughly jump from .2-1k RPM. The lights/dash would flicker with each jump. Could smell gas out of exhaust. After about 2 hours and it being 2am I decided to give it a go again. Cranked up and ran fine 100 miles home. Towed it to a shop and they couldn’t figure it out after having it for over a week. They recommend somewhere but he’s 2 months out and won’t even return my calls. I’ve heard it could possibly be the TPS, spark plugs/wiring, fuel injector, or MAF. Don’t know if anyone has had issues like this but thought I’d post and see. At this point I’m lost on what to do. But whenever I get it running, I’m trading it in immediately. This car has been a disaster.

davidscamaro · 11-22-2019, 04:47 PM

Seems like you have a supercharged v6 , first thing I'd do is new spark plugs gapped to 0.35 go from there , new o2 sensors would be smart thing to do and new maf and map sensors, do all three and my money is on all your problems going away

And as always run quality gas 91 oct or higher when forced induction

redcoats1976 · 11-22-2019, 05:25 PM

is the evap system solenoid on the passenger side vale cover sticking open?mine was sticking and every time i filled it with fuel it would start hard and run horrible for a few seconds.but after that it would run fine until the next fuel stop.are you getting any codes/check engine light?

Dizzy82 · 11-22-2019, 08:11 PM

I had similar issues when I had a ported throttle body. I changed it back to a new stock unit and the issues went away. This was prior to FI though.

Dogmeat · 11-23-2019, 06:13 AM

Quote:

Originally Posted by davidscamaro

Seems like you have a supercharged v6 , first thing I'd do is new spark plugs gapped to 0.35

Not bein' a schmartazz, but the correct number is .035", NOT .35"....there IS a BIG difference! [.35" is almost 3/8" of an inch, whereas .035" is just over 1/32" of an inch]....I know you know what you meant, just wanting to be "technically" correct.

christianchevell · 11-23-2019, 06:31 AM

SO a v-6 owner that decided to supercharge....MEH, you went with the Injen intake no v-8 owner will use as they were most known in their early implementation of picking up water in floods and hydrolocking engines destroying them especially in Cal where they don't use storm water well...………. My thoughts are de mod it as you will get nothing but less for your trade in. Return it to stock and you of course will most likely find your problem is gone what ever it could be from if your running with high flow cats your trashing them running rich to not trash the engine..... Most likely you have no cat though and you have to be able to read codes thown to know whats going on and check everything for tightness and just a little loss of the seal of the MAF or its being dirty or the air tube being loose which yours is very long for no real purposeful gain to pick up fresh air.... and of course check plugs and wires....and go from there.....

As they say there's Fast, reliable, and cheap pick any two...………...Murr Good Luck

11-22-2019, 04:29 PM	#1
Patrick864 RS Drives: 2011 CGM IPF Supercharged LLT Join Date: Jun 2011 Location: Clemson, SC Posts: 458 View My Garage	Rough idle/Running rich. HELP A couple of weeks ago I was driving to the airport, going about 80 or so on the interstate, and all of a sudden my car started to hesitate and bog down. Went down to about 50 before it snapped back normal and ran correctly. Not wanting to ruin my trip, I figured I would worry about it after. So of course when I get back and go to crank up the car would start right up...and then would roughly jump from .2-1k RPM. The lights/dash would flicker with each jump. Could smell gas out of exhaust. After about 2 hours and it being 2am I decided to give it a go again. Cranked up and ran fine 100 miles home. Towed it to a shop and they couldn’t figure it out after having it for over a week. They recommend somewhere but he’s 2 months out and won’t even return my calls. I’ve heard it could possibly be the TPS, spark plugs/wiring, fuel injector, or MAF. Don’t know if anyone has had issues like this but thought I’d post and see. At this point I’m lost on what to do. But whenever I get it running, I’m trading it in immediately. This car has been a disaster. __________________ When you turn your car on, does it return the favor? -IPF SUPERCHARGER, Injen CAI w/Hydroshield, MRT V2.0, VMAX Ported Throttle Body, VMAX BLACK ICE-o-lator, Black emblems, Rear Fascia blackout, Bottom Front Bumper blackout.

11-22-2019, 04:47 PM	#2
davidscamaro Drives: 2010 SS/RS M6 BIG cam Join Date: Mar 2016 Location: McDonald's DT Posts: 857	Seems like you have a supercharged v6 , first thing I'd do is new spark plugs gapped to 0.35 go from there , new o2 sensors would be smart thing to do and new maf and map sensors, do all three and my money is on all your problems going away And as always run quality gas 91 oct or higher when forced induction __________________ BIG cam ...... 305 45 18 Mickys ...... BMR suspensions

11-22-2019, 08:11 PM	#4
Dizzy82 Drives: 2011 1LT/RS A6 RJT SuperCharged Join Date: Mar 2011 Location: 87114 Posts: 3,503 View My Garage	I had similar issues when I had a ported throttle body. I changed it back to a new stock unit and the issues went away. This was prior to FI though. __________________ Power is worthless without control. *The 2nd* protects the 1st.** BMR sub frame brace, BMR tunnel brace, LSR sways, LSR CM ca & tl, Sphon ExD el, GM tower brace, Megan EZ Streets, Goodridge Stainless Steel Braided brake lines, PowerStop D/S rotors & pads, Doug Thorty Ceramic Shorties, Magnaflow x-pipe, MRT V2.0, KICKER PowerStage sub & amp, Infinity speakers & tweeters, Viteese Throttle Controller, Viteese Paddle Shifters, ACS T2 Splitter, ACS T2 Ports/Quad LED lights, VDI kit, Havoc diffuser, IPF ECU/TRANS tuned, IPF/KPE Supercharged. 364RWHP/297RWTQ

11-23-2019, 06:31 AM	#6
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,588 View My Garage	SO a v-6 owner that decided to supercharge....MEH, you went with the Injen intake no v-8 owner will use as they were most known in their early implementation of picking up water in floods and hydrolocking engines destroying them especially in Cal where they don't use storm water well...………. My thoughts are de mod it as you will get nothing but less for your trade in. Return it to stock and you of course will most likely find your problem is gone what ever it could be from if your running with high flow cats your trashing them running rich to not trash the engine..... Most likely you have no cat though and you have to be able to read codes thown to know whats going on and check everything for tightness and just a little loss of the seal of the MAF or its being dirty or the air tube being loose which yours is very long for no real purposeful gain to pick up fresh air.... and of course check plugs and wires....and go from there..... As they say there's Fast, reliable, and cheap pick any two...………...Murr Good Luck __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

11-22-2019, 05:25 PM	#3
redcoats1976 Drives: LT W/2LT,blue metallic Join Date: Jul 2016 Location: central florida Posts: 4,916	is the evap system solenoid on the passenger side vale cover sticking open?mine was sticking and every time i filled it with fuel it would start hard and run horrible for a few seconds.but after that it would run fine until the next fuel stop.are you getting any codes/check engine light?