Notices
Cavalier Starting in the 1980s. the Cavalier made a name for itself by offering an affordable 2 and 4 door compact.
Platform: J-body

99 Cavalier Rough Idle issue

Old January 2nd, 2007, 9:17 AM
  #11  
CF Beginner
Thread Starter
 
Join Date: Dec 2006
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 99 Cavalier Rough Idle issue -Update

The new wires didn't help. My cousin that works at a GM dealership brought over their OBD meter (lots of extra options on that one!).

When the car is idling at 830-850 rpm you can watch the mis-fires on cylinder 4 going up. Take it up to 1000 rpm and they stop and the engine smooths out just fine. All the sensors are working correctly.

So, I plan to take it up to his house in a week or two and we are going to pull the head. His guess is a burnt exhaust valve. He said he would do that before we put a used engine in it as otherwise mine is in great shape. If we pull it and its worse then we can go the used engine route.
99Cavalier is offline  
Old February 16th, 2007, 9:42 PM
  #12  
CF Beginner
 
Join Date: Feb 2007
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 99 Cavalier Rough Idle issue -Update

Any updates?
Hawkez is offline  
Old March 14th, 2007, 4:57 PM
  #13  
CF Beginner
Thread Starter
 
Join Date: Dec 2006
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 99 Cavalier Rough Idle issue -Update

Yes, We worked on it a week and a half ago. We couldn't get the compression to come up on cylinder 4 (one with mis-fire). We pulled the head (hoping it was a valve). Valves looked like 128,000 miles but were OK; it wasn't a valve issue.

This pointed to possibly compression rings etc; so I opted for a used engine (vs tearing this one down any further). We put an engine from a 2000 Cavalier that had 42,000 miles on it; car runs great now.

Cost including labor was $1,500 and since the rest of the car is in great shape it still beats buying a new car.
99Cavalier is offline  
Old June 14th, 2010, 4:09 PM
  #14  
CF Beginner
 
Join Date: Jun 2010
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default similar issue

I have recent trouble with my 97 cavalier. It starts rough and idles high until you gas it a bit. I had the plugs & wires replaced and started running some sea foam & mystery oil through it. Also, the fuel filter is not too old at all.
It's been a great car & I put 150,000 miles on it! I'd hate to dump alot of money into it if there is a simple fix??? I didn't want to mess with the idle adjustment, but not sure if it's safe to keep driving without doing something else for it.
I'm not getting any bad readings on my handheld computer and the engine light doesn't come on.
Any suggestions?

James
sammagolicat is offline  
Old April 4th, 2017, 12:27 AM
  #15  
CF Beginner
 
Join Date: Apr 2017
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

I just finished resolving this issue on my 95 Cavalier. It began misfiring and sputtering bad at idle and up to about 5mph then smoothed out as well. It went away for a day, then came back a few days later but even worse and sputtering occasionally throughout any speed or engine rpm it was at. It would break up so bad at around 45mph or so and I could not accelerate past about 50. It happened after I floored the pedal in an attempt to race a friend in their cavalier, but the car only sputtered and bogged down, moving nowhere. I found that the car was misfiring on cylinder 1 and was running rich because of it (determined this from the look of my spark plug in cyl 1, was dry fouled compared o the others which were fine). I replaced spark plugs and tried again, no difference. Replaced plug wires, no difference. I then replaced the COIL PACKS and went for a drive, car ran smooth and the problem was resolved. Took it on the highway up to 75, ran perfectly fine. For anyone wanting to attempt replacing their coil packs on the older cavaliers (95-97 maybe?), it is not fun. If your spark plug wires run behind the engine and under the intake manifold like mine did, you will have to remove your A/C compressor to gain hand access to the coil packs. Use a wide variety of extensions and a 7/32 socket to get the bolts off, it's tricky. DO NOT remove both coils at once, or you will have to blindly line up bolts and the plate the packs sit on to the bolt holes in the back of the block. Hope this helps, good luck
Dan Parmenter is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Sethyates72
Cavalier
0
February 1st, 2014 7:53 AM
cwl
Cavalier
8
November 30th, 2012 9:23 PM
macmommy
Tahoe & Suburban
8
October 1st, 2010 10:04 PM
kman522
Cavalier
5
April 9th, 2009 12:18 PM
warrior_oh58d
General Tech
0
January 23rd, 2009 4:08 PM


Thread Tools
Search this Thread
Quick Reply: 99 Cavalier Rough Idle issue


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: