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Chevy Cavalier Rough Idle

15 messages,  Last post on Dec 21, 2009 at 4:11 PM

You are in the Chevrolet Cavalier Forum.

What is this discussion about? Chevrolet Cavalier, Auto Repair, Electrical, Coupe

Messages Page 1 of 2

#1 of 15 95 Cavalier by reece2

Oct 19, 2007 (11:32 pm)

ok so i just got my ehaust systems fix on my cavalier...but now im having problems with it stalling out as i come to a stop...my plugs seem to be fine..me and my dad checked them out. I googled the problem and i didnt find much..but i did fine someone saying something about my master cylinder for my brakes and the seal..??? i just wanted to see some feedback and if someone knew something that could help me out..it runs fine for about 15 mins then it starts stalling out when i stop...i have to put in neutral rev the crap out of it then slam it into drive..and i hate doing that to the car. if anbody could help ill love you for ever..lol

#2 of 15 Re: 95 Cavalier [reece2] by tedebear

Oct 20, 2007 (1:59 pm)

Replying to: reece2 (Oct 19, 2007 11:32 pm)
It could be a number of things causing this. You say you checked the plugs and they looked okay. How about the plug gap? If the plugs are several years old I'd recommend changing them anyway. Are the plug wires in good condition? Did you change the PCV valve? How about the fuel filter? The air filter?
 
Also, I've read that sometimes resetting the computer can solve a car running rough. Disconnect the battery for at least an hour or so. After you reconnect it and start the car, let it idle for 2-3 minutes while it "relearns" the idle.
 
Next, drive at moderate speeds for the first 15 minutes, sometimes with the A/C on, to put different loads on the engine. That should take care of the computer reset and, hopefully, the idle problem.

#3 of 15 Re: 95 Cavalier [tedebear] by reece2

Oct 20, 2007 (4:12 pm)

Replying to: tedebear (Oct 20, 2007 1:59 pm)
ok ill try thank for the help...ill let ya know the results

#4 of 15 Re: 95 Cavalier [reece2] by reece2

Oct 20, 2007 (5:12 pm)

Replying to: reece2 (Oct 19, 2007 11:32 pm)
ok so i checked the air filter...a lil dirty but it's fine...i forgot to say that this car was just sitting abput a year before i brought it..i think im starting to narrow it down maybe...i just let the gas get real low but not empty..and now it really acting up..cant even really start it..so im guessing the fuel pump or fuel filter..i know something is wrong with my brake fulid because i can smell it..but the guy at midas told me that it wont make a car stall...so what do u think filter or pump??

#5 of 15 Re: 95 Cavalier [reece2] by tedebear

Oct 21, 2007 (1:27 pm)

Replying to: reece2 (Oct 20, 2007 5:12 pm)
If it sat there for a year without being started and the same fuel was in the tank I'd say that could be a problem. Gas gradually changes into other things when it's been sitting that long. It may have partially clogged fuel lines or injectors. If it sat outside during that time water could have accumulated in the fuel tank.
 
I had an Opel years ago that sat in the driveway for over a year. Although most of the gas had evaporated by the time I got around to working on it the remaining stuff in the tank looked like maple syrup that you'd pour over pancakes. I had to clean all that out and ended up replacing the pump.
 
You might start with the simple things and add a bottle of quality fuel injector cleaner to the tank after you're sure all of the year-old gas is out of there and it's running on a fresh supply.
 
You might also replace some of the easier and less expensive things that I mentioned in the previous message like the PCV valve and fuel filter, especially if it had the same gas sitting in it for a year.

#6 of 15 car not starting by garryh

Nov 20, 2007 (10:19 pm)

changed motor form 88 pontac grand Am to 95 chev cavalier used all component from calvalier but now have no power to main injector plug.
Will test light show if there is power if it will I have tested it and there is nothing
any ideas please

#7 of 15 Re: car not starting [garryh] by gonogo

Nov 21, 2007 (10:50 am)

Replying to: garryh (Nov 20, 2007 10:19 pm)
You put a 88 motor into a 95 ? What model engines are they. The injector power comes from the fuel pump relay, when the fuel pump is running you have power to the injectors.

#8 of 15 2003 Cavalier Dash Problems by atvman29

Apr 28, 2008 (7:40 pm)

#9 of 15 2003 Cavalier Dash Problems by atvman29

Apr 16, 2008 (11:21 am)

On my 2003 Cavalier, the instrument cluster seems to be sticky. The gauges go up but usually don't come back down when the car is shut off. Is this a common problem? I've called some dealerships and all they say is well fr $400 we can replace it. So does anyone know how to fix this problem? Is it best to get it replaced or get it repaired by someone who fixes them?

#10 of 15 anyone?? by atvman29

Apr 16, 2008 (6:15 pm)

anyone??? please!

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