Idling rough / running rich????
Thread Starter
Heel & Toe
Joined: Mar 2013
Posts: 23
Likes: 0
From: Scott AFB Illinois
Idling rough / running rich????
Car smells like it is running rich and it seems to be having trouble idling nice and smooth. Idle bounces back and forth between 630 - 720 and never seems to smooth out. What could be causing this? Could this be the O2 sensor? I also noticed that the coolant temp is not getting above 170 degrees. My thought was to put a new thermostat in, but does it matter what temp thermostat...185 or 195?
Also, what kind of job is replacing the valve cover gaskets on an 85?
While I have the covers off, I would like to paint them due to them peeling a bit. Any recommendations on a good paint that will withstand the heat or will the high temp paint from the parts store work.
Thanks in advance!!!
Also, what kind of job is replacing the valve cover gaskets on an 85?
While I have the covers off, I would like to paint them due to them peeling a bit. Any recommendations on a good paint that will withstand the heat or will the high temp paint from the parts store work.
Thanks in advance!!!
Drifting
Joined: Jul 2012
Posts: 1,796
Likes: 14
From: Nampa Idaho
Hi, need more information. When's the last time you gave her a tune up? (plugs, wires, distributor cap and rotor) It may also be the Idle Air Control Valve? Here's the link to them. It's a well spent $160 if you have the cash!
http://www.ecklerscorvette.com/corve...1986early.html
http://www.ecklerscorvette.com/corve...1986early.html
http://www.ecklerscorvette.com/corve...1984-1991.html
http://www.ecklerscorvette.com/corve...1986early.html
http://www.ecklerscorvette.com/corve...1986early.html
http://www.ecklerscorvette.com/corve...1984-1991.html
Thread Starter
Heel & Toe
Joined: Mar 2013
Posts: 23
Likes: 0
From: Scott AFB Illinois
I've only owned the car for a couple of weeks now, but the PO said that it had complete tune up 6 months ago and the wires and distributor cap appear to be pretty new. I took it on a 200 mile trip this past weekend and the temp never passed 170f. It just seems like it is trying to compensate for something??????? Runs pretty good otherwise. Not sure what type of gas milage I should be expecting, but it got around 20 this weekend. Thats counting a few burn outs and running the car good.
Racer
Joined: Aug 2012
Posts: 279
Likes: 2
From: Las Vegas Nevada
Unplug your MAF and see if it runs better. I've been chasing these symptoms for about a month. Here's my thread:
http://forums.corvetteforum.com/c4-t...rformance.html
http://forums.corvetteforum.com/c4-t...rformance.html
Melting Slicks
Joined: Mar 2008
Posts: 2,141
Likes: 76
From: Santa Maria, CA
I've only owned the car for a couple of weeks now, but the PO said that it had complete tune up 6 months ago and the wires and distributor cap appear to be pretty new. I took it on a 200 mile trip this past weekend and the temp never passed 170f. It just seems like it is trying to compensate for something??????? Runs pretty good otherwise. Not sure what type of gas milage I should be expecting, but it got around 20 this weekend. Thats counting a few burn outs and running the car good.
The O2 sensor could produce the symptoms you describe. Have you checked for stored codes?
Valve cover gaskets are straight forward. I use the inexpensive cork gaskets from Fel Pro. I attach the gasket to the valve cover with a thin coat of Gray RTV.
