Backfiring - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

chevygirl2002 · 01-15-2012, 01:29 PM

My 2002 z28 has been back firing and running rough.

I am talking the car to a good friend of mine who works on our cars. He is gonna start with a tune up and new o2 sensors. To see if that helps.

I have tried changing the fuel i put in the car, but she still back fires. It is running rough. When the car back fires or gets really sluggish.

Any ideas?

OffseT · 01-15-2012, 05:50 PM

Could it be spark plugs perhaps?

xXSilencerXx · 01-16-2012, 11:12 AM

Plugs, wires, fuel filter, air filter. I'd start with all the simple stuff. Is it throwing any codes?

dmginc · 01-16-2012, 01:44 PM

plugs/wires. fuel filter is a good idea but that wouldnt cause the backfire. crank sensor can also cause the timing to be off which can cause the rough idle and backfires.

xXSilencerXx · 01-16-2012, 04:21 PM

Quote:

Originally Posted by dmginc

plugs/wires. fuel filter is a good idea but that wouldnt cause the backfire. crank sensor can also cause the timing to be off which can cause the rough idle and backfires.

Lol true, I was responding tot he rough idle part didn't really include the backfire. Does it always happen in the cold? My TA when I first got it idled horrible when it got cold. Turned out the intake manifold wasn't torqued correctly.

chevygirl2002 · 01-17-2012, 12:54 PM

I am gonna start with simple repairs. Tune up, change the front o2 sensors. The car is throwing a code, but it is for the front o2.

She runs rough and back fires all the time. Especially if i am on the throttle. Lots of hesitation and when it does back fire the car does not want to accelerate.

OffseT · 01-17-2012, 04:55 PM

Welp if your able to figure it out let us know!

mulehead7 · 01-17-2012, 08:24 PM

I have a friend who had the same condition and it was the O2 sensor. Good luck.

chevygirl2002 · 01-18-2012, 02:55 PM

Thanks. I am thinking that it is the sensors. Been having trouble with them since they got "replacex".

chevygirl2002 · 01-23-2012, 02:18 PM

Everything went really well my friends shop. He did the plugs and welding. The O2's checked out fine so he didnt replace them. Apparently the plugs were changed, but the idiot that did the work put the wrong ones in and didnt use anti-seize so they were really difficult to get out. #8 didnt even have the wire hooked up. It had pooped off.

He found a rusty socket lodged in the sub frames and that was causing a lot of the rattling. He wants to do some work to the exhaust system...tuck everything up under the car and make it look neater. So might have him do that in early march when I go out of town.

I have a exhaust leak in the driver side header. There is either a bolt missing or it broke off half way in. It leaks a little and is causing the hissing noise.

Other than that she runs SO much better. No more rough idle and lurching and no more back firing

01-15-2012, 01:29 PM	#1
chevygirl2002 Drives: Silver 2002 SS Camaro Join Date: Apr 2010 Location: Lakewood, CO Posts: 137	Backfiring My 2002 z28 has been back firing and running rough. I am talking the car to a good friend of mine who works on our cars. He is gonna start with a tune up and new o2 sensors. To see if that helps. I have tried changing the fuel i put in the car, but she still back fires. It is running rough. When the car back fires or gets really sluggish. Any ideas? __________________

01-15-2012, 05:50 PM	#2
OffseT Maroboy2001 AKA Offset Drives: Boosted Trans Am Join Date: Oct 2011 Location: Las Cruces, NM Posts: 1,149	Could it be spark plugs perhaps? __________________

01-16-2012, 11:12 AM	#3
xXSilencerXx Butter Bar! Drives: 2011 SS, 1998 Trans Am Join Date: Dec 2010 Location: Patrick AFB, FL Posts: 1,364	Plugs, wires, fuel filter, air filter. I'd start with all the simple stuff. Is it throwing any codes? __________________ 2011 Camaro SS, White/Orange, LSR Short Throw, CAI 1998 Trans Am, Red, H/C/I, 3200 CircleD Stall, full suspension 2004 GSXR 1k, Matt Mladin Edition

01-16-2012, 01:44 PM	#4
dmginc Drives: In Circles Join Date: Mar 2011 Location: South Carolina Posts: 3,433 View My Garage	plugs/wires. fuel filter is a good idea but that wouldnt cause the backfire. crank sensor can also cause the timing to be off which can cause the rough idle and backfires. __________________ CAI Cold Air Intake, BMR Strut Tower Brace, BMR 1.2" Lowering Springs Gen5DIY Fog Lights, Big Worm Third Brake Light/Side Marker Tint (Charcoal) GTS Tail Light Covers, Purple Under Hood Lighting Magnaflow Resonated X-Pipe w/ Muffler Delete Black Plasti Dipped Wheels, Z/28 Spoiler

01-17-2012, 12:54 PM	#6
chevygirl2002 Drives: Silver 2002 SS Camaro Join Date: Apr 2010 Location: Lakewood, CO Posts: 137	I am gonna start with simple repairs. Tune up, change the front o2 sensors. The car is throwing a code, but it is for the front o2. She runs rough and back fires all the time. Especially if i am on the throttle. Lots of hesitation and when it does back fire the car does not want to accelerate. __________________

01-17-2012, 04:55 PM	#7
OffseT Maroboy2001 AKA Offset Drives: Boosted Trans Am Join Date: Oct 2011 Location: Las Cruces, NM Posts: 1,149	Welp if your able to figure it out let us know! __________________

01-17-2012, 08:24 PM	#8
mulehead7 stubborn as a ... Drives: '94 Trans Am Join Date: Jan 2010 Location: K.C. MO Posts: 464 View My Garage	I have a friend who had the same condition and it was the O2 sensor. Good luck. __________________

01-18-2012, 02:55 PM	#9
chevygirl2002 Drives: Silver 2002 SS Camaro Join Date: Apr 2010 Location: Lakewood, CO Posts: 137	Thanks. I am thinking that it is the sensors. Been having trouble with them since they got "replacex". __________________

01-23-2012, 02:18 PM	#10
chevygirl2002 Drives: Silver 2002 SS Camaro Join Date: Apr 2010 Location: Lakewood, CO Posts: 137	Everything went really well my friends shop. He did the plugs and welding. The O2's checked out fine so he didnt replace them. Apparently the plugs were changed, but the idiot that did the work put the wrong ones in and didnt use anti-seize so they were really difficult to get out. #8 didnt even have the wire hooked up. It had pooped off. He found a rusty socket lodged in the sub frames and that was causing a lot of the rattling. He wants to do some work to the exhaust system...tuck everything up under the car and make it look neater. So might have him do that in early march when I go out of town. I have a exhaust leak in the driver side header. There is either a bolt missing or it broke off half way in. It leaks a little and is causing the hissing noise. Other than that she runs SO much better. No more rough idle and lurching and no more back firing __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2011 TUNING WITH SCT FROM JANNETTY RACING	JANNETTYRACING	Tuning / Diagnostics -- engine and transmission	173	10-01-2014 11:26 AM
Backfiring?	dwake	Forced Induction - V8	18	07-09-2010 10:19 PM