rough idle and backfires, why? please help - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

chevyryda · 05-28-2009, 04:02 PM

my 1995 camaro with a 3.4L V6 starts up fine and runs good as long as i drive it. if i turn it off and turn it on it idles rough and backfires. i replaced the plugs and wires and cleaned the idle control motor and did not help. anybody have any ideas what could cause this?

Vash · 05-28-2009, 05:00 PM

Hum have you pulled codes? Check for vac leaks and maybe any play on your distributor.

The gears can wear out. I don't know much about that particular engine probably want to repost in one of the major 4th gen forums.

chevyryda · 05-28-2009, 06:03 PM

i haven't pulled the codes yet. i was looking to see if anybody has had this problem or any advice before i took it in.

Chocolate Apocalypse · 05-28-2009, 06:41 PM

Not sure what it would be off the top of my head but I'd definitely take it to an AutoZone or another auto parts place to pull the codes. That will help narrow down the possibilities. I take it your Service Engine Soon light is on?

chevyryda · 05-29-2009, 01:26 AM

check engine comes on after driving for awhile but goes away as i turn the car off.

Boomer Sooner · 05-31-2009, 12:39 AM

I was having similiar problems on my 99 z28. Turns out it was my cam sensor.

Bismarck318 · 06-07-2009, 10:00 PM

Similar problem about 4 years back, it simply went away unexplained, now I'm having hard starting problems.... no codes.

Quote:

Originally Posted by Boomer Sooner

I was having similiar problems on my 99 z28. Turns out it was my cam sensor.

Would that be the crankshaft sensor?? Similar problem on a Bonneville years back, car would at times not start.... I'm experiencing the same problem now with the Camaro, alternatively it could also be the fuel filter.

05-28-2009, 04:02 PM	#1
chevyryda Drives: 1995 Covertible Camaro Join Date: May 2009 Location: San Diego Posts: 3	rough idle and backfires, why? please help my 1995 camaro with a 3.4L V6 starts up fine and runs good as long as i drive it. if i turn it off and turn it on it idles rough and backfires. i replaced the plugs and wires and cleaned the idle control motor and did not help. anybody have any ideas what could cause this?

05-28-2009, 06:41 PM	#4
Chocolate Apocalypse Full Fledged Member Drives: '18 1SS 1LE Join Date: Mar 2008 Location: Las Vegas Posts: 346 View My Garage	Not sure what it would be off the top of my head but I'd definitely take it to an AutoZone or another auto parts place to pull the codes. That will help narrow down the possibilities. I take it your Service Engine Soon light is on? __________________ '18 1SS 1LE - DD '72 Cutlass - LSA topped 370" LS2

05-28-2009, 05:00 PM	#2
Vash Drives: 00 Blazer Join Date: Aug 2008 Location: Texas Posts: 5,100	Hum have you pulled codes? Check for vac leaks and maybe any play on your distributor. The gears can wear out. I don't know much about that particular engine probably want to repost in one of the major 4th gen forums.

05-28-2009, 06:03 PM	#3
chevyryda Drives: 1995 Covertible Camaro Join Date: May 2009 Location: San Diego Posts: 3	i haven't pulled the codes yet. i was looking to see if anybody has had this problem or any advice before i took it in.

05-29-2009, 01:26 AM	#5
chevyryda Drives: 1995 Covertible Camaro Join Date: May 2009 Location: San Diego Posts: 3	check engine comes on after driving for awhile but goes away as i turn the car off.

05-31-2009, 12:39 AM	#6
Boomer Sooner Banned Drives: my girlfriend nuts Join Date: Dec 2008 Location: OK Posts: 336	I was having similiar problems on my 99 z28. Turns out it was my cam sensor.