Rough idle on a 95?
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Rough idle on a 95?
My 95's idle has started getting kind of rough. Seems to be worse when all the accessories are on, esp the heat/AC. Tach isn't moving much and it's idling between 600 and 700 it seems. Car has 55K on it and I'm thinking it's prolly the original plugs in it. Car doesn't have any other problems any where else and pulls very strong. Anything else I might check?
On the way out to get new plugs right now. (NGK TR55's) Not sure if I'm going to be able to change them myself or not.. that right rear looks like a killer.
Thxs
Jim
On the way out to get new plugs right now. (NGK TR55's) Not sure if I'm going to be able to change them myself or not.. that right rear looks like a killer.
Thxs
Jim
Le Mans Master
Joined: Jun 1999
Posts: 6,272
Likes: 2
From: Chino Valley AZ
Cruise-In I Veteran
Cruise-In II Veteran
Currently Corvette-less
Re: Rough idle on a 95? (Springer's 95)
Jim,
You are on the right track. The 1st thing you should do is get the ignition system in good order. In your case ~ plugs and wires is about all you can do without digging into the OptiSpark ~ which it wouldn't appear is a problem for you at this time.
My 92 LT1 was experiencing rough idle symptoms and I took the logical approach to solving the problem. Eventually it was a new set of injectors that cured my problem. I went with the FMS 24#/hr injectors from Jeg's, which cost me ~$200 for the entire set. In all honesty, I feel that this was one of the best investments I have made with my Vette.
:seeya Purp
You are on the right track. The 1st thing you should do is get the ignition system in good order. In your case ~ plugs and wires is about all you can do without digging into the OptiSpark ~ which it wouldn't appear is a problem for you at this time.
My 92 LT1 was experiencing rough idle symptoms and I took the logical approach to solving the problem. Eventually it was a new set of injectors that cured my problem. I went with the FMS 24#/hr injectors from Jeg's, which cost me ~$200 for the entire set. In all honesty, I feel that this was one of the best investments I have made with my Vette.
:seeya Purp
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: Rough idle on a 95? (PurpleC4)
Well, I cleaned the TB and changed the plugs...
The right rear plug was put there out of spite...correct?? :mad :smash: :mad :smash: :mad :smash: :mad :smash: :mad
Took about two hours to change all 8 plugs, they were original delcos and in pretty ugly shape, good color, but the pucks were missing on 5 out of the 8, gaps ranged from 50 to 67!!
Car idles much better and pulls even stronger on the top end. Next thing is the wires, but i'll pay someone to do them :)
The right rear plug was put there out of spite...correct?? :mad :smash: :mad :smash: :mad :smash: :mad :smash: :mad
Took about two hours to change all 8 plugs, they were original delcos and in pretty ugly shape, good color, but the pucks were missing on 5 out of the 8, gaps ranged from 50 to 67!!
Car idles much better and pulls even stronger on the top end. Next thing is the wires, but i'll pay someone to do them :)
Race Director
Joined: Aug 2001
Posts: 19,812
Likes: 0
From: Weirsdale (outside of Ocala) Florida
Re: Rough idle on a 95? (Springer's 95)
Hey Jim,
Did you have any special tools to take the plugs out? I'm thinking about changing mine also. I had a new opti and wires put in when I bought the car.
Jim #2 or is that 3, I forget.
Did you have any special tools to take the plugs out? I'm thinking about changing mine also. I had a new opti and wires put in when I bought the car.
Jim #2 or is that 3, I forget.
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: Rough idle on a 95? (OcalaGuy)
Nothing out of the ordinary, just make sure you've got a mix of extensions, even short ones less then 2 inches. A swivel extension is a plus too. The left side is easy enough, unbolt the 3 bolts holding the ASR unit in and flip it out of the way, then you can get them all. The right side is a pain, the #2 plug needs a short extension to get a socket on it, 4 is easy, 6 was a little bit harder cause the heater box starts and 8 is just some poor awful engineering. :smash:
I ended up taking the spark plug wire loom bracket off, and that gave me enough room to get my hand in there. (and I've got thin arms) Putting the plug back in is just as bad. At one time I was sitting on the tire with my back to the motor, both hands down around the manifold trying to get the plug started.
I forgot which Jim I am also! :)
:cheers:
[Modified by Springer's 95, 9:24 PM 1/12/2002]
I ended up taking the spark plug wire loom bracket off, and that gave me enough room to get my hand in there. (and I've got thin arms) Putting the plug back in is just as bad. At one time I was sitting on the tire with my back to the motor, both hands down around the manifold trying to get the plug started.
I forgot which Jim I am also! :)
:cheers:
[Modified by Springer's 95, 9:24 PM 1/12/2002]
Le Mans Master
Joined: Jun 1999
Posts: 6,272
Likes: 2
From: Chino Valley AZ
Cruise-In I Veteran
Cruise-In II Veteran
Currently Corvette-less
Re: Rough idle on a 95? (Springer's 95)
Three things that I have found to be invaluable when changing plugs on my 92 LT1 Coupe:
#1 - A long 24" extension so that I can work the plugs through though the wheel wells.
#2 - A good 3/8" universal joint that doesn't flop from side to side, but stays in place when I turn it to a preferred position.
#3 - a 12" piece of rubber hose that I can slip over the spark plug and use to turn the plug to remove and install. It also keeps me from dropping the plug. Try It ~ You'll Like It!
:seeya Purp
#1 - A long 24" extension so that I can work the plugs through though the wheel wells.
#2 - A good 3/8" universal joint that doesn't flop from side to side, but stays in place when I turn it to a preferred position.
#3 - a 12" piece of rubber hose that I can slip over the spark plug and use to turn the plug to remove and install. It also keeps me from dropping the plug. Try It ~ You'll Like It!
:seeya Purp
