Rough idle?
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,975
Likes: 0
From: La Habra Heights CA
Rough idle?
My car idles roughly sometimes. Occasionally, it will be smooth, but it's generally rough. Very rough. The car will stumble nearly to the point of stalling. The idle sometimes hovers around 1200 rpm instead of the 800 it was when it wasn't doing this. The car will occasionally stall. The engine will just die. This does not matter what gear I am in, as I've had it stall in neutral, park, drive, and even reverse. Reverse! What can cause something like this? Has anyone had a problem like this before?
Melting Slicks
Joined: Aug 2003
Posts: 2,906
Likes: 1,365
From: Sevierville Tn
Re: Rough idle? (Stolit)
My, 92, did the same thing. I, replaced the opti with a dynaspark, now all seems well. It, would shut off doing 60 mph and sometimes star right back up. Other times I, had to crank it a bunch of times and then it would start. Put the dynaspark on about 300 miles ago.
Pro
Joined: Jul 2002
Posts: 729
Likes: 4
From: Yukon OK
Re: Rough idle? (harley2)
Hmmm. This could be a long list.
Rough Idle causes:
Throttle body
timing
vacuum leaks
leaky injectors
stuck injectors
bad injectors
misc injector problems
MAF sensor
IAC
EGR
ECM
PCV
spark plugs
plug wires
distributor
rotor
fuel pump
fuel pressure regulator
wiring
other sensors
Think that just about covers it. (might have missed a couple). Start with those. This is not a simple subject and often there are multiple things going on at the same time, so no one thing will fix it. A good manual will take you through all the checks and eliminate them one at a time. :cheers:
Rough Idle causes:
Throttle body
timing
vacuum leaks
leaky injectors
stuck injectors
bad injectors
misc injector problems
MAF sensor
IAC
EGR
ECM
PCV
spark plugs
plug wires
distributor
rotor
fuel pump
fuel pressure regulator
wiring
other sensors
Think that just about covers it. (might have missed a couple). Start with those. This is not a simple subject and often there are multiple things going on at the same time, so no one thing will fix it. A good manual will take you through all the checks and eliminate them one at a time. :cheers:
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,975
Likes: 0
From: La Habra Heights CA
Re: Rough idle? (Stolit)
Thanks everyone. :cheers: I guess tomorrow afternoon, it's time to put the car in the back and check everything on the list. I don't think it's a fuel problem, as it does it only sometimes and not all the time, but I also don't recall ever even paying attention to the injectors, even when I bought the car 7,000 miles ago. The car now has 121K miles. That'll be the first thing I'll check.
Thanks, guys. :cheers:
Thanks, guys. :cheers:
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Re: Rough idle? (Stolit)
Read this post by Ski first and see if anything sounds similar http://forums.corvetteforum.com/zerothread?id=674894
