1991 RS v6 stalling problems
#1
Junior Member
Thread Starter
Join Date: Apr 2015
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: V6 3.1 MFI
Transmission: Automatic
1991 RS v6 stalling problems
I've had my car for almost an entire year and I have yet to manage to find a fix for the stalling. For a period of about 2 months there was a point where it didn't stall. It's stalling again and now the idle is extremely low in neutral and when I come to a stop in drive. I've replaced the ignition switch, spark plugs and wire set for them, new distributor cap, new IAC valve (twice), new EGR valve, and new fuel injectors. None of these fixed the stalling issues. I'm at my wits end for this thing. Someone please send help!
Last edited by ProtocolXero; 04-18-2015 at 07:49 AM.
#3
Junior Member
Thread Starter
Join Date: Apr 2015
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: V6 3.1 MFI
Transmission: Automatic
#4
Re: 1991 RS v6 stalling problems
I guess 91s have an electric egr valve, so that's not likely your problem.
I'd start by removing the throttle body & cleaning it good. I think they have a gasket set for those.
I'd start by removing the throttle body & cleaning it good. I think they have a gasket set for those.
#5
Moderator
iTrader: (1)
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,401
Likes: 0
Received 215 Likes
on
201 Posts
Car: check
Engine: check
Transmission: check
Re: 1991 RS v6 stalling problems
I noticed that the injectors have been replaced, hopefully they aren't re-mans of the OEM Multecs. If so they could still be an issue.
Since this is a 3.1l with an auto there is an idle learn that needs to be done whenever the ECM loses battery power. Good link to that procedure:
https://www.thirdgen.org/forums/v6/1...dle-learn.html
Note that in that link is also information on cleaning the TB. This too is important as the varnish and carbon build up on the blade causes idle issues.
RBob.
Since this is a 3.1l with an auto there is an idle learn that needs to be done whenever the ECM loses battery power. Good link to that procedure:
https://www.thirdgen.org/forums/v6/1...dle-learn.html
Note that in that link is also information on cleaning the TB. This too is important as the varnish and carbon build up on the blade causes idle issues.
RBob.
#6
Supreme Member
iTrader: (1)
Join Date: Sep 2010
Location: Georgetown TX
Posts: 1,928
Likes: 0
Received 0 Likes
on
0 Posts
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 1991 RS v6 stalling problems
Also take off the idle air control (IAC) valve and clean all the passages in there too. Check for vacuum leaks and pull the vac line from the fuel pressure regulator and smell for gas. And more detail on those injectors.
#7
Junior Member
Thread Starter
Join Date: Apr 2015
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: V6 3.1 MFI
Transmission: Automatic
Re: 1991 RS v6 stalling problems
OK so the injectors are not oem. They are a different brand and definitely better. I've cleaned the entire throttle body and replaced all the gaskets with a direct fit throttle body gasket set I ordered. Idle relearn performed too. Still stalling and a very low idle while coming to a stop in drive and neutral. No vacuum or air leaks either.
Trending Topics
#8
Junior Member
Join Date: May 2014
Location: Texas
Posts: 59
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Firebird
Engine: V-6
Transmission: Auto
Re: 1991 RS v6 stalling problems
Double check this. Mine was stalling and the exhaust smelled like fuel. I had gas in this line (there should not be any). I replaced the fuel pressure regulator, and now she runs smooth as silk.
Good Luck
Good Luck
#9
Member
Re: 1991 RS v6 stalling problems
The EGR Valves in those year models were prone to sticking open due to carbon getting on the pentel seat. It would usually cause a low or rough idle after the engine was warmed up and it would usually set a code, causing the light to come on. I'd pull the EGR valve and clean the pentel and seat to see if that clears the problem up.
#10
Junior Member
Thread Starter
Join Date: Apr 2015
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: V6 3.1 MFI
Transmission: Automatic
Re: 1991 RS v6 stalling problems
The EGR Valves in those year models were prone to sticking open due to carbon getting on the pentel seat. It would usually cause a low or rough idle after the engine was warmed up and it would usually set a code, causing the light to come on. I'd pull the EGR valve and clean the pentel and seat to see if that clears the problem up.
Thread
Thread Starter
Forum
Replies
Last Post
Denricci22
Transmissions and Drivetrain
5
09-18-2015 09:02 AM