Rough Idle
Thread Starter
TECH Regular
Joined: Oct 2005
Posts: 431
Likes: 1
From: Lexington, NC
Rough Idle Hey guys,
I have been on here before, but its been a while. Not too long ago I had the Opti replaced as well as the plugs and wires. But here recently the car has been running very rough at idle. It used to only do this when the car would get up to temp, and then if i slip in neutral and rev it up a couple times, it would go away and smooth out.
Now the will get that rough idle, cough and sputter at about every stop light no matter of the temp. It will even do it when I am going slow down the street. The car will not stall out, or atleast it hasnt stalled out yet. When I cut it off, there are bad fumes, like it is running rich.
I used to work at the local GM dealership as an intern when I was in HS. I remember when we were playing around with the 3200 motors in the bonivelles. We could adjust the EGR with the OB2 and when we opened it up, the thing would sputter and cough, just like mine is doing now. Im wondering if it is just a O2 sensor, or is it the EGR. Or am I completely off base here.
Anyone else had these problems.
Oh yeah, its a 94' LT1 with an A4
Thanks for the help in advance.
-bryan
I have been on here before, but its been a while. Not too long ago I had the Opti replaced as well as the plugs and wires. But here recently the car has been running very rough at idle. It used to only do this when the car would get up to temp, and then if i slip in neutral and rev it up a couple times, it would go away and smooth out.
Now the will get that rough idle, cough and sputter at about every stop light no matter of the temp. It will even do it when I am going slow down the street. The car will not stall out, or atleast it hasnt stalled out yet. When I cut it off, there are bad fumes, like it is running rich.
I used to work at the local GM dealership as an intern when I was in HS. I remember when we were playing around with the 3200 motors in the bonivelles. We could adjust the EGR with the OB2 and when we opened it up, the thing would sputter and cough, just like mine is doing now. Im wondering if it is just a O2 sensor, or is it the EGR. Or am I completely off base here.
Anyone else had these problems.
Oh yeah, its a 94' LT1 with an A4
Thanks for the help in advance.
-bryan
Last edited by bmccrary; Jul 29, 2006 at 01:06 PM.
Mine did that when I had the computer replaced, it needed to be programmed for tech1 thats what my problem was but I doubt it is the same case for yours. Maybe an egr line is disconnected because I've heard that can cause rough idling?
